abacion wilhelminae millipede - wildlifearkansas.com invertebrates.pdf · apochthonius titanicus...
TRANSCRIPT
![Page 1: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/1.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Diplopoda
Callipodida
Abacionidae
DistributionOccurrence Records
Abacion wilhelminaeMillipede
Priority Score:
S1 — Critically imperiled in Arkansas
GNR — Not yet ranked
23
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Abacion wilhelminaeMillipede
782
![Page 2: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/2.jpg)
Terrestrial Invertebrate Report
Habitat Map
Problems Faced
Habitat destruction. Threat: Habitat destructionSource:
Data Gaps/Research Needs
Life history, status surveys and basic biological information needs to be obtained.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Comments
Endemic millipede of the Ouachita Mountains of Arkansas (Robison and Allen 1995).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Abacion wilhelminaeMillipede
783
![Page 3: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/3.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Amphipoda
Crangonyctidae
DistributionElement Occurrence Records
Allocrangonyx hubrichtiHubricht's Long-tailed Amphipod
Priority Score:
S1? — Critically imperiled in Arkansas (inexact numeric rank)
G2G3 — Imperiled (uncertain rank)
42
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Allocrangonyx hubrichtiHubricht's Long-tailed Amphipod
784
![Page 4: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/4.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Arkansas Valley - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Suitable
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Allocrangonyx hubrichtiHubricht's Long-tailed Amphipod
785
![Page 5: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/5.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: SedimentationSource: Urban development
Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Obtain baseline information on distribution and population status, and confirm validity of occurrence record in Arkansas Valley.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Additional information is needed before a monitoring strategy can be developed.
Comments
Crustacean.This species' distribution may not be resticted to caves. In Missouri, it has been documented from benthic stream habitats (personal communication, Mike E. Slay).
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Allocrangonyx hubrichtiHubricht's Long-tailed Amphipod
786
![Page 6: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/6.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Gastropoda
Neotaenioglossa
Hydrobiidae
DistributionElement Occurrence Records
Amnicola coraFoushee Cavesnail
Priority Score:
S1 — Critically imperiled in Arkansas
G1 — Critically imperiled species
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Amnicola coraFoushee Cavesnail
787
![Page 7: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/7.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Obligate
Amnicola coraFoushee Cavesnail
788
![Page 8: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/8.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: Habitat disturbanceSource: Recreation
Threat: SedimentationSource: Urban development
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Determine life history information.
Obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
A cave-obligate snail only known from Foushee Cave in Independence County (Hubricht 1979).
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Amnicola coraFoushee Cavesnail
789
![Page 9: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/9.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Arachnida
Pseudoscorpiones
Chthoniidae
DistributionOccurrence Records
Apochthonius diabolusCave Obligate Pseudoscorpion
Priority Score:
S1 — Critically imperiled in Arkansas
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Apochthonius diabolusCave Obligate Pseudoscorpion
790
![Page 10: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/10.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat destruction or conversionSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences
Comments
Pseudoscorpion. No information available.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Apochthonius diabolusCave Obligate Pseudoscorpion
791
![Page 11: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/11.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Arachnida
Pseudoscorpiones
Chthoniidae
DistributionOccurrence Records
Apochthonius titanicusCave Obligate Pseudoscorpion
Priority Score:
S1 — Critically imperiled in Arkansas
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Apochthonius titanicusCave Obligate Pseudoscorpion
792
![Page 12: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/12.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat destruction or conversionSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
No data gaps or research needs were identified.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Apochthonius titanicusCave Obligate Pseudoscorpion
793
![Page 13: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/13.jpg)
Terrestrial Invertebrate Report
Comments
Pseudoscorpion.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Apochthonius titanicusCave Obligate Pseudoscorpion
794
![Page 14: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/14.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Amphipoda
Crangonyctidae
DistributionElement Occurrence Records
Bactrurus pseudomucronatusAmphipod
Priority Score:
S1? — Critically imperiled in Arkansas (inexact numeric rank)
G2G3 — Imperiled (uncertain rank)
42
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Bactrurus pseudomucronatusAmphipod
795
![Page 15: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/15.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Obligate
Natural Groundwater: Obligate
Bactrurus pseudomucronatusAmphipod
796
![Page 16: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/16.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: SedimentationSource: Urban development
Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Evaluate taxonomic relationships.
Survey for additional populations.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Additional information is needed before a monitoring strategy can be developed.
Comments
This crustacean species is one of the largest groundwater amphipods in North America (personal communication, Mike E. Slay).
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Bactrurus pseudomucronatusAmphipod
797
![Page 17: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/17.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea ancylaIsopod
Priority Score:
S2 — Imperiled in Arkansas
G3G4 — Vulnerable (uncertain rank)
27
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea ancylaIsopod
798
![Page 18: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/18.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - Arkansas River
Boston Mountains - White River
Ozark Highlands - Arkansas River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Caecidotea ancylaIsopod
799
![Page 19: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/19.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
Crustacean. This species is a cave-adapted aquatic isopod.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea ancylaIsopod
800
![Page 20: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/20.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea dimorphaIsopod
Priority Score:
S2 — Imperiled in Arkansas
G2G3 — Imperiled (uncertain rank)
38
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea dimorphaIsopod
801
![Page 21: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/21.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Arkansas Valley - White River
Boston Mountains - White River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Caecidotea dimorphaIsopod
802
![Page 22: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/22.jpg)
Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionOccurrence Records
Caecidotea fonticulus
Isopod
Priority Score:
S1 — Critically imperiled in Arkansas
GNR — Not yet ranked
23
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea fonticulusIsopod
803
![Page 23: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/23.jpg)
Aquatic Invertebrate Report
Ecobasins where the species occurs
Ecobasins
Ouachita Mountains - Ouachita River
Habitats Weight
Natural Groundwater: Headwater - Small Data Gap
Natural Seep: Headwater - Small Data Gap
Natural Spring Run: Headwater - Small Obligate
Problems Faced
Threat: Habitat destruction or conversionSource: Forestry activities
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
An Arkansas endemic isopod known only from Abernathy Spring in Polk County (Lewis 1983).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea fonticulusIsopod
804
![Page 24: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/24.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Headwater - Small Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
Crustacean. This species is a cave-adapted aquatic isopod.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea dimorphaIsopod
805
![Page 25: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/25.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea macropropodaBat Cave Isopod
Priority Score:
S2 — Imperiled in Arkansas
G2G3 — Imperiled (uncertain rank)
38
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea macropropodaBat Cave Isopod
806
![Page 26: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/26.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - Arkansas River
Ozark Highlands - Arkansas River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Caecidotea macropropodaBat Cave Isopod
807
![Page 27: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/27.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
Crustacean.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea macropropodaBat Cave Isopod
808
![Page 28: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/28.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea oculataIsopod
Priority Score:
S1 — Critically imperiled in Arkansas
G2G3 — Imperiled (uncertain rank)
42
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea oculataIsopod
809
![Page 29: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/29.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Data Gap
Natural Groundwater: Data Gap
Natural Seep: Headwater - Small Data Gap
Natural Spring Run: Headwater - Small Obligate
Caecidotea oculataIsopod
810
![Page 30: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/30.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
Crustacean.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea oculataIsopod
811
![Page 31: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/31.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea salemensisIsopod
Priority Score:
S1 — Critically imperiled in Arkansas
G4 — Apparently secure species
27
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea salemensisIsopod
812
![Page 32: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/32.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Caecidotea salemensisIsopod
813
![Page 33: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/33.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
Crustacean.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea salemensisIsopod
814
![Page 34: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/34.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea simulatorCave Obligate Isopod
Priority Score:
S1 — Critically imperiled in Arkansas
G2G3 — Imperiled (uncertain rank)
42
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea simulatorCave Obligate Isopod
815
![Page 35: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/35.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - Arkansas River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Data Gap
Natural Groundwater: Obligate
Natural Seep: Headwater - Small Data Gap
Natural Spring Run: Headwater - Small Data Gap
Caecidotea simulatorCave Obligate Isopod
816
![Page 36: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/36.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: SedimentationSource: Urban development
Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
This crustacean species is one of the rarest aquatic cave-adapted isopods in Arkansas.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea simulatorCave Obligate Isopod
817
![Page 37: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/37.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea steevesiIsopod
Priority Score:
S1 — Critically imperiled in Arkansas
G3G4 — Vulnerable (uncertain rank)
31
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea steevesiIsopod
818
![Page 38: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/38.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Ozark Highlands - Arkansas River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Caecidotea steevesiIsopod
819
![Page 39: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/39.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
This crustacean species is a cave-adapted aquatic isopod.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea steevesiIsopod
820
![Page 40: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/40.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Caecidotea stiladactylaIsopod
Priority Score:
S3 — Vulnerable in Arkansas
G3G4 — Vulnerable (uncertain rank)
23
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Caecidotea stiladactylaIsopod
821
![Page 41: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/41.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - White River
Ozark Highlands - Arkansas River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Caecidotea stiladactylaIsopod
822
![Page 42: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/42.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Headwater - Small Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: Nutrient loadingSource: Urban development
Threat: SedimentationSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
This crustacean species is a cave-adapted aquatic isopod.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Caecidotea stiladactylaIsopod
823
![Page 43: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/43.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Arachnida
Opiliones
Phalangodidae
DistributionOccurrence Records
Crosbyella distinctaCave Obligate Harvestman
Priority Score:
S1 — Critically imperiled in Arkansas
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Crosbyella distinctaCave Obligate Harvestman
824
![Page 44: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/44.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat destruction or conversionSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Comments
Arachnid.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Crosbyella distinctaCave Obligate Harvestman
825
![Page 45: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/45.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Arachnida
Opiliones
Phalangodidae
DistributionOccurrence Records
Crosbyella roeweriCave Obligate Harvestman
Priority Score:
S1 — Critically imperiled in Arkansas
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Crosbyella roeweriCave Obligate Harvestman
826
![Page 46: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/46.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat destruction or conversionSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Comments
Arachnid.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Crosbyella roeweriCave Obligate Harvestman
827
![Page 47: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/47.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
DistributionOccurrence Records
Daedalochila peregrinaWhite Liptooth
Priority Score:
SNR — Species not ranked in Arkansas
G2 — Imperiled species
34
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Daedalochila peregrinaWhite Liptooth
828
![Page 48: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/48.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Mesic Hardwood Forest Data Gap
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
Terrestrial snail. (Turgeon and others 1998)
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Daedalochila peregrinaWhite Liptooth
829
![Page 49: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/49.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Turbellaria
Tricladida
Dendrocoelidae
DistributionElement Occurrence Records
Dendrocoelopsis americanaCave Obligate Planarian
Priority Score:
S1 — Critically imperiled in Arkansas
G2G3 — Imperiled (uncertain rank)
42
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Dendrocoelopsis americanaCave Obligate Planarian
830
![Page 50: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/50.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - Arkansas River
Boston Mountains - White River
Ozark Highlands - Arkansas River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Optimal
Dendrocoelopsis americanaCave Obligate Planarian
831
![Page 51: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/51.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Optimal
Natural Spring Run: Headwater - Small Optimal
Problems Faced
Threat: Habitat disturbanceSource: Urban development
Threat: SedimentationSource: Urban development
Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat Restoration/ImprovementMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
Flatworm.
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Dendrocoelopsis americanaCave Obligate Planarian
832
![Page 52: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/52.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Oligochaeta
Opisthopora
Acanthodrilidae
DistributionOccurrence Records
Diplocardia meansiEarthworm
Priority Score:
S2S3 — Imperiled species in Arkansas (uncertain rank)
GNR — Not yet ranked
17
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Diplocardia meansiEarthworm
833
![Page 53: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/53.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Mesic Hardwood Forest Suitable
Problems Faced
Habitat degradation/disturbance. Threat: Habitat disturbanceSource: Forestry activities
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
Limit soil disturbance. Habitat ProtectionHigh
Suspend application of herbicides where this species occurs.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Comments
The second largest earthworm in the United States, D. meansi is an Arkansas endemic only known from the slopes of Rich Mountain (Gates 1977).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Diplocardia meansiEarthworm
834
![Page 54: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/54.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Pupillidae
DistributionOccurrence Records
Gastrocopta rogersensisLand Snail
Priority Score:
S2 — Imperiled in Arkansas
G3G4 — Vulnerable (uncertain rank)
27
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Gastrocopta rogersensisLand Snail
835
![Page 55: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/55.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Cliff and Talus Optimal
Problems Faced
Forestry practices that disturb litter layer and create xeric conditions.
Threat: Habitat disturbanceSource: Forestry activities
Data Gaps/Research Needs
Need to assess population status of known occurrences.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Survey areas near known occurrences to locate additional populations.
Comments
A regionally endemic (Arkansas, Missouri) terrestrial snail that occupies habitat in and along bluff lines (Nekola and Coles 2001).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Gastrocopta rogersensisLand Snail
836
![Page 56: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/56.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Arachnida
Pseudoscorpiones
Chernetidae
DistributionOccurrence Records
Hesperochernes occidentalisPseudoscorpion
Priority Score:
S1 — Critically imperiled in Arkansas
G5 — Secure
23
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Hesperochernes occidentalisPseudoscorpion
837
![Page 57: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/57.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Disturbance of cave habitat and recharge zone. Threat: Habitat disturbanceSource: Recreation
Groundwater contamination. Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Hesperochernes occidentalisPseudoscorpion
838
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Terrestrial Invertebrate Report
Comments
An Arkansas endemic species, this pseudoscorpion is only known from Fincher and Carrol Caves in Washington County (Hoff and Bolsterti 1956).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Hesperochernes occidentalisPseudoscorpion
839
![Page 59: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/59.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
DistributionOccurrence Records
Inflectarius magazinensisMagazine Mountain Shagreen
Priority Score:
S1 — Critically imperiled in Arkansas
G1 — Critically imperiled species
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Inflectarius magazinensisMagazine Mountain Shagreen
840
![Page 60: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/60.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Cliff and Talus Optimal
Problems Faced
Development or activities that alter talus slopes where this species occurs.
Threat: Habitat disturbanceSource: Forestry activities
Development or activities that alter talus slopes where this species occurs.
Threat: Habitat disturbanceSource: Recreation
Data Gaps/Research Needs
Need to assess population status of known occurrences.
ImportanceConservation Actions Category
Protect known occurrences from development or activities that could alter talus slopes.
Habitat ProtectionHigh
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Inflectarius magazinensisMagazine Mountain Shagreen
841
![Page 61: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/61.jpg)
Terrestrial Invertebrate Report
Comments
An Arkansas endemic species only known from sites on Magazine Mountain in Logan County (Pilsbry and Ferriss 1906).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Inflectarius magazinensisMagazine Mountain Shagreen
842
![Page 62: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/62.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Lirceus bicuspidatusIsopod
Priority Score:
S2 — Imperiled in Arkansas
G3Q — Vulnerable (questionable taxonomy)
31
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Lirceus bicuspidatusIsopod
843
![Page 63: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/63.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Arkansas Valley - Arkansas River
Arkansas Valley - White River
Boston Mountains - White River
Ouachita Mountains - Arkansas River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Optimal
Lirceus bicuspidatusIsopod
844
![Page 64: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/64.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Suitable
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Optimal
Problems Faced
Threat: SedimentationSource: Resource extraction
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Determine life history information.
Determine validity of location data for records in Arkansas Valley and Ouachita Mountains.
Surveys to locate additional populations.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Additional information is needed before a monitoring strategy can be developed.
Comments
This isopod inhabits a variety of biotopes including small seep/springs and streams, and cave streams. Nothing more is known about the biology of this species, except that it is widely known from the mountainous region of Arkansas. (ANHI 2003, Robison and Allen, 1995)
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Lirceus bicuspidatusIsopod
845
![Page 65: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/65.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Isopoda
Asellidae
DistributionElement Occurrence Records
Lirceus bidentatusIsopod
Priority Score:
S1 — Critically imperiled in Arkansas
G1? — Critically imperiled (inexact numeric rank)
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Lirceus bidentatusIsopod
846
![Page 66: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/66.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Aquatic Habitats
Natural Cave Stream: Headwater - Small Obligate
Natural Groundwater: Data Gap
Natural Seep: Headwater - Small Data Gap
Natural Spring Run: Headwater - Small Data Gap
Lirceus bidentatusIsopod
847
![Page 67: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/67.jpg)
Aquatic/Terrestrial Invertebrate Report
Problems Faced
Threat: SedimentationSource: Forestry activities
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Determine life history information.
Determine taxonomic status. Validity of this species is in question.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
This Arkansas endemic isopod is only known from a seep in the Ozark Mountains of Boone County (Hubricht and Mackin 1949).
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Lirceus bidentatusIsopod
848
![Page 68: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/68.jpg)
Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Gastropoda
Neotaenioglossa
Hydrobiidae
DistributionOccurrence Records
Marstonia ozarkensis
Ozark Pyrg
Priority Score:
S1? — Critically imperiled in Arkansas (inexact numeric rank)
G1 — Critically imperiled species
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Marstonia ozarkensisOzark Pyrg
849
![Page 69: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/69.jpg)
Aquatic Invertebrate Report
Ecobasins where the species occurs
Ecobasins
Ozark Highlands - White River
Problems Faced
Threat: Source:
Data Gaps/Research Needs
Conduct distribution and abundance studies.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
Freshwater snail reclassified as Marstonia ozarkensis (Hershler and Thompson 1987, Thompson and Hershler 2002, Turgeon and others 1998).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Marstonia ozarkensisOzark Pyrg
850
![Page 70: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/70.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Zonitidae
DistributionOccurrence Records
Paravitrea aulacogyraStriate Supercoil
Priority Score:
SH — Historic record. Possibly extirpated in Arkansas
GHQ — Historic record of questionable taxonomy
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Paravitrea aulacogyraStriate Supercoil
851
![Page 71: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/71.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Cliff and Talus Optimal
Problems Faced
Forestry practices that disturb litter layer and create xeric conditions.
Threat: Habitat disturbanceSource: Forestry activities
Loss of habitat to development. Threat: Habitat destruction or conversionSource: Recreation
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Survey areas near known occurrences to locate additional populations.
Paravitrea aulacogyraStriate Supercoil
852
![Page 72: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/72.jpg)
Terrestrial Invertebrate Report
Comments
An Arkansas endemic species, this terrestrial snail is known only from a site on the northern summit of Magazine Mountain in Logan County (Pislbry and Ferriss 1906).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Paravitrea aulacogyraStriate Supercoil
853
![Page 73: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/73.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
DistributionOccurrence Records
Patera clenchiCalico Rock Oval
Priority Score:
SNR — Species not ranked in Arkansas
G1 — Critically imperiled species
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Patera clenchiCalico Rock Oval
854
![Page 74: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/74.jpg)
Terrestrial Invertebrate Report
Habitat Map
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations.
Comments
Terrestrial snail. (Turgeon and others 1998).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Patera clenchiCalico Rock Oval
855
![Page 75: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/75.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Elliplura
Collembola
Entomobryidae
DistributionOccurrence Records
Pseudosinella dubiaSpringtail
Priority Score:
SNR — Species not ranked in Arkansas
G1G2 — Critically imperiled (uncertain rank)
50
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Pseudosinella dubiaSpringtail
856
![Page 76: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/76.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Disturbed litter layer creates xeric conditions. Threat: Habitat disturbanceSource: Forestry activities
Loss of habitat to development. Threat: Habitat destruction or conversionSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Evaluate taxonomic relationships.
Survey for additional populations.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Additional information is needed before a monitoring strategy can be developed.
Pseudosinella dubiaSpringtail
857
![Page 77: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/77.jpg)
Terrestrial Invertebrate Report
Comments
Collembola.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Pseudosinella dubiaSpringtail
858
![Page 78: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/78.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Elliplura
Collembola
Entomobryidae
DistributionOccurrence Records
Pseudosinella testaShelled Cave Springtail
Priority Score:
SNR — Species not ranked in Arkansas
G2G3 — Imperiled (uncertain rank)
27
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Pseudosinella testaShelled Cave Springtail
859
![Page 79: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/79.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat disturbanceSource: Urban development
Groundwater contamination. Threat: Habitat disturbanceSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Pseudosinella testaShelled Cave Springtail
860
![Page 80: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/80.jpg)
Terrestrial Invertebrate Report
Comments
Collembola.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Pseudosinella testaShelled Cave Springtail
861
![Page 81: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/81.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Elliplura
Collembola
Sminthuridae
DistributionOccurrence Records
Pygmarrhopalites clarusSpringtail
Priority Score:
S1S2 — Critically imperiled in Arkansas (uncertain rank)
G4 — Apparently secure species
25
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Pygmarrhopalites clarusSpringtail
862
![Page 82: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/82.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat destruction or conversionSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
More data is needed before a monitoring strategy can be developed.
Pygmarrhopalites clarusSpringtail
863
![Page 83: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/83.jpg)
Terrestrial Invertebrate Report
Comments
Collembola. This is a terrestrial cave adapted springtail that is only known from caves in the Ozarks (personal communication, Mike E. Slay).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Pygmarrhopalites clarusSpringtail
864
![Page 84: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/84.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Elliplura
Collembola
Hypogastruridae
DistributionOccurrence Records
Schaefferia alabamensisCave Obligate Springtail
Priority Score:
SNR — Species not ranked in Arkansas
G1G2 — Critically imperiled (uncertain rank)
50
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Schaefferia alabamensisCave Obligate Springtail
865
![Page 85: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/85.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat disturbanceSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Schaefferia alabamensisCave Obligate Springtail
866
![Page 86: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/86.jpg)
Terrestrial Invertebrate Report
Comments
Collembola. The Arkansas specimens that have been called this species are currently being redescribed as a new species (pers comm., Mike E. Slay).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Schaefferia alabamensisCave Obligate Springtail
867
![Page 87: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/87.jpg)
Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Gastropoda
Neotaenioglossa
Hydrobiidae
DistributionOccurrence Records
Somatogyrus amnicoloides
Ouachita Pebblesnail
Priority Score:
SX — Presumed extinct
GX — Presumed extinct
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Somatogyrus amnicoloidesOuachita Pebblesnail
868
![Page 88: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/88.jpg)
Aquatic Invertebrate Report
Ecobasins where the species occurs
Problems Faced
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data is needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
An endemic freshwater snail known only from the Ouachita River at Arkadelphia in Clark County.Walker, B. 1915. Apical characters in Somatogyrus with descriptions of three new species. The Nautilus 29(4):37-41.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Somatogyrus amnicoloidesOuachita Pebblesnail
869
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Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Gastropoda
Neotaenioglossa
Hydrobiidae
DistributionOccurrence Records
Somatogyrus crassilabris
Thicklipped Pebblesnail
Priority Score:
SX — Presumed extinct
GX — Presumed extinct
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Somatogyrus crassilabrisThicklipped Pebblesnail
870
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Aquatic Invertebrate Report
Ecobasins where the species occurs
Ecobasins
Ozark Highlands - White River
Problems Faced
Threat: Hydrological alterationSource: Dam
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations.
Comments
This freshwater snail species is also known as the Thick-lip Pebblesnail. It is known only from the North Fork of the White River in Baxter County, Arkansas (Robison and Allen 1995). Presumed extinct from the North Fork of the White River, Norfolk, Arkansas (Burch and Tottenham 1980).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Somatogyrus crassilabrisThicklipped Pebblesnail
871
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Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Gastropoda
Neotaenioglossa
Hydrobiidae
DistributionOccurrence Records
Somatogyrus wheeleri
Channelled Pebblesnail
Priority Score:
SX — Presumed extinct
GX — Presumed extinct
80
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Somatogyrus wheeleriChannelled Pebblesnail
872
![Page 92: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/92.jpg)
Aquatic Invertebrate Report
Ecobasins where the species occurs
Ecobasins
South Central Plains - Ouachita River
Problems Faced
Threat: Hydrological alterationSource: Dam
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Comments
This freshwater snail species is extirpated in the subnation. Habitat probably destroyed by reservoirs. Known only from the Ouachita River in Clark County, AR (Robison and Allen 1995, Turgeon and others 1998).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Somatogyrus wheeleriChannelled Pebblesnail
873
![Page 93: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/93.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
DistributionOccurrence Records
Stenotrema pilsbryiRich Mountain Slitmouth
Priority Score:
S2 — Imperiled in Arkansas
G2 — Imperiled species
46
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Stenotrema pilsbryiRich Mountain Slitmouth
874
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Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Cliff and Talus Obligate
Problems Faced
Road construction maintenance. Threat: Habitat destruction or conversionSource: Road construction
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Stenotrema pilsbryiRich Mountain Slitmouth
875
![Page 95: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/95.jpg)
Terrestrial Invertebrate Report
Comments
Terrestrial snail. It is known from numerous locations associated with rock glaciers usually above the 1600 ft. contour, and usually under hardwood forest cover, on Rich and Black Fork Mountains in AR and OK, and on Winding Stair Mountain, OK. There are no major threats to any of the populations. However, there are some activities that could conceivably impact snail habitat, including mowing, paving and repaving of the Talimena Scenic Drive, maintenance of vistas involving periodic localized vegetation management, and maintenance of hiking trails, electronic transmission sites, and one power line right-of way. Population trends are assumed to be steady (ANHI 2003, Robison and Allen 1995).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Stenotrema pilsbryiRich Mountain Slitmouth
876
![Page 96: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/96.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
DistributionOccurrence Records
Stenotrema unciferumOuachita Slitmouth
Priority Score:
SNR — Species not ranked in Arkansas
G2 — Imperiled species
34
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Stenotrema unciferumOuachita Slitmouth
877
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Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Mesic Hardwood Forest Obligate
Problems Faced
Habitat disturbance that limits access to dead wood and creates xeric conditions.
Threat: Habitat disturbanceSource: Forestry activities
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
Terrestrial snail. Found to occur on moist slopes in rotting timbers, but most particularly under small talus (Brian Coles, pers. Comm.).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Stenotrema unciferumOuachita Slitmouth
878
![Page 98: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/98.jpg)
Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Amphipoda
Crangonyctidae
DistributionOccurrence Records
Stygobromus elatus
Elevated Spring Amphipod
Priority Score:
S1? — Critically imperiled in Arkansas (inexact numeric rank)
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Stygobromus elatusElevated Spring Amphipod
879
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Aquatic Invertebrate Report
Ecobasins where the species occurs
Ecobasins
Arkansas Valley - Arkansas River
Habitats Weight
Natural Groundwater: Data Gap
Natural Seep: Headwater - Small Obligate
Natural Spring Run: Headwater - Small Data Gap
Problems Faced
Threat: Habitat destruction or conversionSource: Recreation
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
An Arkansas endemic amphipod, this species has only been collected from a seep on Magazine Mountain in Logan County (Holsinger 1967).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Stygobromus elatusElevated Spring Amphipod
880
![Page 100: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/100.jpg)
Aquatic Invertebrate Report
State Rank:
Gobal Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Amphipoda
Crangonyctidae
DistributionOccurrence Records
Stygobromus montanus
Mountain Cave Amphipod
Priority Score:
S1? — Critically imperiled in Arkansas (inexact numeric rank)
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Stygobromus montanusMountain Cave Amphipod
881
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Aquatic Invertebrate Report
Ecobasins where the species occurs
Ecobasins
Ouachita Mountains - Arkansas River
Habitats Weight
Natural Groundwater: Data Gap
Natural Seep: Headwater - Small Optimal
Problems Faced
Threat: Habitat disturbanceSource: Forestry activities
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Determine life history information.
Survey for baseline information on distribution and population status.
ImportanceConservation Actions Category
Protect seeps and seep recharge zones. Habitat ProtectionMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Comments
This Arkansas endemic amphipod has only been collected from a unidentified spring on Rich Mountain (Holsinger 1967).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Stygobromus montanusMountain Cave Amphipod
882
![Page 102: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/102.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Malacostraca
Amphipoda
Crangonyctidae
DistributionElement Occurrence Records
Stygobromus ozarkensisOzark Cave Amphipod
Priority Score:
S2 — Imperiled in Arkansas
G4 — Apparently secure species
23
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Stygobromus ozarkensisOzark Cave Amphipod
883
![Page 103: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/103.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Boston Mountains - Arkansas River
Boston Mountains - White River
Ozark Highlands - Arkansas River
Ozark Highlands - White River
Terrestrial Habitats
Caves, Mines, Sinkholes and other Karst Features Obligate
Stygobromus ozarkensisOzark Cave Amphipod
884
![Page 104: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/104.jpg)
Aquatic/Terrestrial Invertebrate Report
Aquatic Habitats
Natural Cave Stream: Headwater - Small Optimal
Natural Groundwater: Optimal
Natural Seep: Headwater - Small Suitable
Natural Spring Run: Headwater - Small Marginal
Problems Faced
Threat: SedimentationSource: Urban development
Threat: Toxins/contaminantsSource: Urban development
Data Gaps/Research Needs
Determine life history information.
Evaluate taxonomic relationships.
Survey and model for additional occurrences.
ImportanceConservation Actions Category
Protect caves and cave recharge zones. Habitat ProtectionMedium
Monitoring Strategies
Monitor known occurrences in cave surveys.
Comments
This crustacean species is limited to groundwater habitats and occurs in fewer than 15 caves in Arkansas (personal communication, Mike E. Slay).
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Stygobromus ozarkensisOzark Cave Amphipod
885
![Page 105: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/105.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Arachnida
Pseudoscorpiones
Neobisiidae
DistributionOccurrence Records
Tartarocreagris ozarkensisPseudoscorpion
Priority Score:
S1 — Critically imperiled in Arkansas
GNR — Not yet ranked
23
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Tartarocreagris ozarkensisPseudoscorpion
886
![Page 106: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/106.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Ozark-Ouachita Dry-Mesic Oak Forest Suitable
Ozark-Ouachita Mesic Hardwood Forest Suitable
Problems Faced
Timber harvesting that decreases available dead wood and leads to more xeric forest conditions.
Threat: Habitat disturbanceSource: Forestry activities
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
Limit timber harvesting in areas where this species is known to occur.
Habitat ProtectionMedium
Monitoring Strategies
Survey for additional populations and monitor known occurrences.
Comments
An Arkansas endemic pseudoscorpion that has been collected only from Washington County (Hoff 1945).
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Tartarocreagris ozarkensisPseudoscorpion
887
![Page 107: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/107.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Diplopoda
Chordeumatida
Trichopetalidae
DistributionOccurrence Records
Trigenotyla parcaCave Obligate Millipede
Priority Score:
S1 — Critically imperiled in Arkansas
G1G2 — Critically imperiled (uncertain rank)
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Trigenotyla parcaCave Obligate Millipede
888
![Page 108: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/108.jpg)
Terrestrial Invertebrate Report
Habitat Map
Habitats Weight
Caves, Mines, Sinkholes and other Karst Features Obligate
Problems Faced
Development/disturbance of cave habitat and recharge zone.
Threat: Habitat destructionSource: Urban development
Groundwater contamination. Threat: Toxins/contaminantsSource: Non-point source pollution
Data Gaps/Research Needs
Determine life history information.
Obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
Maintain groundwater quality. Habitat ProtectionMedium
Protect cave habitat and recharge zone from development or disturbance.
Habitat ProtectionMedium
Monitoring Strategies
More data are needed before a monitoring strategy can be developed.
Trigenotyla parcaCave Obligate Millipede
889
![Page 109: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/109.jpg)
Terrestrial Invertebrate Report
Comments
No information available.
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Trigenotyla parcaCave Obligate Millipede
890
![Page 110: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/110.jpg)
Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plain
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
DistributionOccurrence Records
Xolotrema occidentaleArkansas Wedge
Priority Score:
SNR — Species not ranked in Arkansas
G1 — Critically imperiled species
65
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Ozark Highlands
Xolotrema occidentaleArkansas Wedge
891
![Page 111: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/111.jpg)
Terrestrial Invertebrate Report
Habitat Map
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
Terrestrial snail. (Turgeon and others 1998)
Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Xolotrema occidentaleArkansas Wedge
892
![Page 112: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/112.jpg)
Aquatic/Terrestrial Invertebrate Report
State Rank:
Global Rank:
Boston Mountains
Arkansas Valley
Ouachita Mountains
South Central Plains
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Ozark Highlands
Class:
Order:
Family:
Insecta
Plecoptera
Leuctridae
DistributionElement Occurrence Records
Zealeuctra wachitaOuachita Needlefly
Priority Score:
S1 — Critically imperiled in Arkansas
G2 — Imperiled species
50
Ecoregions where the species occurs:
Population Trend: Unknown
out of 100
Zealeuctra wachitaOuachita Needlefly
893
![Page 113: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/113.jpg)
Aquatic/Terrestrial Invertebrate Report
Terrestrial Habitats
Ecobasins where this species occurs
Ecobasins
Ouachita Mountains - Red River
Problems Faced
Threat: SedimentationSource: Resource extraction
Threat: Toxins/contaminantsSource: Municipal/Industrial point source
Data Gaps/Research Needs
Need to obtain baseline information on distribution and population status.
Zealeuctra wachitaOuachita Needlefly
894
![Page 114: Abacion wilhelminae Millipede - wildlifearkansas.com Invertebrates.pdf · Apochthonius titanicus Cave Obligate Pseudoscorpion Priority Score: S1 — Critically imperiled in Arkansas](https://reader031.vdocuments.site/reader031/viewer/2022030500/5aacea887f8b9a59658da006/html5/thumbnails/114.jpg)
Aquatic/Terrestrial Invertebrate Report
ImportanceConservation Actions Category
More data are needed to determine conservation actions.
Data GapMedium
Monitoring Strategies
Surveys to locate additional populations and protection of stream habitats.
Comments
Only known from Polk Co. and Scott Co., Arkansas from fewer than five occurrences. Inhabits intermittent streams (Ricker and Ross 1969).
Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner
Zealeuctra wachitaOuachita Needlefly
895