egg niches
DESCRIPTION
PDCNR, Bugwood.com. Egg Niches. Range in appearance from slits to oval. Michael Bohne, USDA Forest Service. Kenneth R Law, USDA APHIS PPQ. PDCNR, Bugwood.com. Egg Niches. Mandible marks around outside of niche. Kenneth R Law, USDA APHIS PPQ. PDCNR, Bugwood.com. Egg Niches. - PowerPoint PPT PresentationTRANSCRIPT
Minnesota First Detectors
Egg NichesPDCNR, Bugwood.com
Michael Bohne, USDA Forest ServiceKenneth R Law, USDA APHIS PPQ
Range in appearance from slits to oval
Minnesota First Detectors
Egg NichesPDCNR, Bugwood.com
Kenneth R Law, USDA APHIS PPQ
Mandible marks around outside of niche
Minnesota First Detectors
Egg NichesPDCNR, Bugwood.com
Sap running from egg niche woundsTree eventually closes wound; can no longer see
Michael Bohne, USDA Forest Service
Minnesota First Detectors
LarvaePDCNR, Bugwood.com
Steven Katovich, U
SDA Forest Service
• Found in living trees
• Feed beneath bark in phloem initially; tunnel into sapwood and heartwood when larger
Minnesota First Detectors
LarvaePDCNR, Bugwood.com
Kenneth R. Law, USDA APHIS PPQ
Mature larva is 2" long Legless Mandibles protrude, head
not visible No spines on tip of
abdomen
Minnesota First Detectors
LarvaePDCNR, Bugwood.com
PA Dept. of Conservation and Natural Resources – Forestry Archive
Larvae push frass out of tunnels
Minnesota First Detectors
ALB detection
Thinning canopy is not a good diagnostic tool for ALB
Look for Exit holes Egg sites Sap leaking from wounds Frass piled at base of tree of in branch
crotches
Minnesota First Detectors
PDCNR, Bugwood.com
Whitney Cranshaw, Colorado State University
• Larval look-alikes may be found in dead wood
Look-alikes
• Native horntail exit holes on silver mapleStanislaw Kinelski, Bugwood.org
Minnesota First Detectors
Look-alikesPDCNR, Bugwood.com
Carpenterworm moth
Damage photo - Bob HammonJames Solomon, USDA Forest Service
Minnesota First Detectors
Which Beetle is ALB?
0%
50%
50% A. Insect AB. Insect BC. Insect C
PDCNR, Bugwood.com
A B CGerald J. Lenhard, Louisiana State Univ.
Joseph BergerKenneth R. Law, USDA APHIS PPQ
Minnesota First Detectors
James Solomon, USDA Forest Service
Which Larva is ALB?
0%
67%
33% A. Insect AB. Insect BC. Insect C
A B C
PDCNR, Bugwood.com
Dennis Haugen
Minnesota First Detectors
Which Damage is from ALB?
0%
33%
67% A. Insect AB. Insect BC. Insect C
A B
PDCNR, Bugwood.com
Dennis Haugen, USDA Forest ServiceDiane Hildebrand, USDA Forest Service
CMN Dept. of Agriculture
Minnesota First Detectors
Questions?
www.beetlebuster.info