danik, b1j012129

7/23/2019 Danik, B1J012129

http://slidepdf.com/reader/full/danik-b1j012129 1/14

See discussions, stats, and author profiles for this publication at: http://www.researchgate.net/publication/263463847

Six new species of the genus Euphthiracarus(Acari: Oribatida: Euphthiracaridae) from China

ARTICLE in ZOOTAXA · SEPTEMBER 2012

Impact Factor: 0.91

CITATIONS

6

READS

8

3 AUTHORS, INCLUDING:

Dong Liu

Chinese Academy of Sciences

52 PUBLICATIONS 57 CITATIONS

SEE PROFILE

Donghui Wu

Chinese Academy of Sciences

33 PUBLICATIONS 52 CITATIONS

SEE PROFILE

Available from: Dong Liu

Retrieved on: 30 September 2015

http://www.researchgate.net/institution/Chinese_Academy_of_Sciences?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_6

http://www.researchgate.net/profile/Dong_Liu36?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_5


http://www.researchgate.net/profile/Donghui_Wu2?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_5

http://www.researchgate.net/?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_1









http://www.researchgate.net/?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_1

http://www.researchgate.net/publication/263463847_Six_new_species_of_the_genus_Euphthiracarus_%28Acari_Oribatida_Euphthiracaridae%29_from_China?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_3

http://www.researchgate.net/publication/263463847_Six_new_species_of_the_genus_Euphthiracarus_%28Acari_Oribatida_Euphthiracaridae%29_from_China?enrichId=rgreq-670edadd-46f5-4472-bf92-b88c9792c51b&enrichSource=Y292ZXJQYWdlOzI2MzQ2Mzg0NztBUzoxMTI4ODEzOTE2NDA1ODBAMTQwMzkyNDQyOTg3NQ%3D%3D&el=1_x_2

7/23/2019 Danik, B1J012129


Accepted by H. Schatz: 1 Aug. 2012; published: 13 Sept. 2012

ZOOTAXA

ISSN 1175-5326 (print edition)

ISSN 1175-5334 (online edition)Copyright © 2012 · Magnolia Press

Zootaxa 3481: 47–59 (2012)

www.mapress.com / zootaxa /

Article

47

urn:lsid:zoobank.org:pub:8D913C23-AF71-4D14-B346-61A2D7F7029A

Six new species of the genus Euphthiracarus (Acari: Oribatida:Euphthiracaridae) from China

DONG LIU1, DONGHUI WU1 & JUN CHEN2, 3

1 Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, P. R. China2Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101,

P. R. China3Corresponding author. E-mail: [email protected]

Abstract

Six new species of Euphthiracarus from China are described: E. macrorostralis sp. nov., E. medogensis sp. nov., E. min-

imus sp. nov., E. oblongus sp. nov., E. protrusus sp. nov., E. truncatus sp. nov., and a key to all known species of China

is provided.

Key words: Soil mites, Oribatida, Euphthiracaridae, Euphthiracarus, new species, China

Introduction

Euphthiracarus is the largest genus of the family Euphthiracaridae, with a nearly cosmopolitan distribution. Till

now, ten species of this group have been recorded in China (Chen et al. 2010, Liu et al. 2011). While checking

specimens of ptyctimous mites, we identified six species new to science. The aim of this paper is to give detailed

descriptions of these species and a key to all known species of China. All types are deposited in the National

Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing.

Methods

Measurements and descriptions are based on specimens mounted in temporary cavity slides that were studied using

a light microscope equipped with a drawing attachment.

The terminology generally follows Niedbała (2000). The unit of measurement is micrometre ( µ m).

Descriptions of species

Euphthiracarus macrorostralis sp. nov.

(Figs. 1–3)

Material examined: Holotype: adult (in alcohol, W-90-28), China: Sichuan Province, Songpan County,

Huanglongsi (32°44'59.89"N, 103°57'40.32"E), from litter, 3000 m a.s.l., 3 Jul., 1990, leg. Fu-Sheng Huang.

Paratype: one adult (in alcohol, W-90-25), China: Sichuan Province, Songpan County, Zalitai, from litter, 3000 m

a.s.l., 2 Jul., 1990, leg. Fu-Sheng Huang.

Etymology. The new specific name “macrorostralis” is from Latin and refers to the long and robust rostral

setae.

http://zoobank.org/urn:lsid:zoobank.org:pub:8D913C23-AF71-4D14-B346-61A2D7F7029A

http://zoobank.org/urn:lsid:zoobank.org:pub:8D913C23-AF71-4D14-B346-61A2D7F7029A

7/23/2019 Danik, B1J012129


LIU ET AL.48 · Zootaxa 3481 © 2012 Magnolia Press

FIGURES 1–3. Euphthiracarus macrorostralis sp. nov.: 1, lateral view of body (legs removed); 2, prodorsum, dorsal view; 3,left side of ventral plate. Scale bars=50 µ m.

7/23/2019 Danik, B1J012129


Zootaxa 3481 © 2012 Magnolia Press · 49SIX NEW EUPHTHIRACARUS SPECIES FROM CHINA

Measurements: Holotype: Prodorsum: length 300, width 215, height 115, setae: ss 110 , ro 110, in 127, le 90, ex

35, distance between setae: ro–ro 67, in–in 100, le–le 55, in–le 95, le–ro 55; notogaster: length 645, width 420,

height 425; setae: c1 105, c

2 95, c3 75, c

p 77, d 1 75, d

2 75, e1 80, e

2 80, h1 105, h

2 85, h3 77, ps

1 95, ps2 90, ps

3 80;

distance between setae: c1–d 1 157, d 1 –e1 170, e1–h1 175, h1– ps1 120; ventral region: genitoaggenital plate 280×90,

anoadanal plate 300×85. Paratype: Prodorsum: length 330, width 225, height 115; notogaster: length 660, width

385, height 400; ventral region: genitoaggenital plate 255×100, anoadanal plate 325×82.

Colour yellowish. Surface of body smooth, except dorsal region of prodorsum finely foveolate.Prodorsum with two parallel lateral carinae on each side, upper carina waved, stronger and longer than lower

one; sensilla bacilliform, covered with small and sparse spines in distal half; interlamellar and lamellar setae

robust, erect, covered with spines in distal half; rostral setae long, rough and semi-erect, bent distally, thicker than

all other prodosal and notogastral setae; exobothridial setae short and fine; comparative length: in>ro=ss>le>ex.

Notogaster setae relatively short, similar in shape to interlamellar setae, barbed in distal half; setae c1–3

remote

from anterior border, setae c1 slightly more so than setae c2 and c3; vestigial setae f 1 located anteriorly of setae h1;

arrangement of opisthosomal glands and lyrifissures typical for genus.

Genital plates each with nine setae, g1–3

short and fine, located in progenital position, other setae thicker and

longer, spiniform; two pairs of aggenital setae present, spiniform, equally thick, ag2 about twice as long as ag1;

setae an1 and an

2 smooth and flagellate at distal end, setae an

3 and adanal setae shorter, robust and covered with

small and sparse spines in distal half; lyrifissures iad situated between setae an3 and ad 3.Setae h of mentum longer than distance between them; palps three-segmented with setal formula: 2-2-8(1);

chaetotaxy of legs (without tarsi): I: 1-3-5(2)-5(1); II: 1-4-4(1)-5(1), III: 2-2-2(1)-2(1), IV: 2-1-1(1)-2(1); all legs

heterotridactylous.

Distribution. Known only from the type locality.

Remark. This new species is similar to E. cribrarius (Berlese, 1904), but differs from the latter species by

following characters: surface of notogaster smooth; rostral setae robust, thicker than all other setae, bent distally;

rostral setae longer than lamellar setae.

Euphthiracarus medogensis sp. nov.

(Figs. 4–6)

Material examined: Holotype: adult (in alcohol), China: Tibet, Mêdog County (29°19'31.07"N, 95°19'59.51"E),

from litter, 1800 m a.s.l., 20 Jan., 1983, leg. Yin-Heng Han.

Etymology. The new specific name “medogensis” refers to the type locality, Mêdog.

Measurements: Holotype: Prodorsum: length 336, width 238, height 125, setae: ss 135 , ro 130, in 165, le 115,

ex 30, distance between setae: ro–ro 62, in–in 120, le–le 60, in–le 90, le–ro 60; notogaster: length 665, width 410,


2 127, c

3 115, c

p 115, d

1 100, d

2 100, e

1 125, e

2 105, h

1 135, h

2 115, h

3 95, ps

1 140, ps

2 117,

ps3 102; distance between setae: c

1–d

1 185, d

1 –e

1 170, e

1–h

1 167, h

1– ps

1 115; ventral region: genitoaggenital plate

250×115, anoadanal plate 320×90.

Colour yellowish. Surface of body covered with dense and small foveolae, except notogaster with large

foveolae and lateral region of prodorsum smooth.

Prodorsum with two parallel lateral carinae on each side, upper carina stronger than lower one; sensilla

bacilliform, sparsely barbed in distal half; interlamellar and lamellar setae erect, covered with small and sparse

spines in distal half; rostral setae thin, smooth and long, flagellate and bent distally; comparative length:

in>ss>ro>le>ex.

Notogaster setae relatively short, similar in shape to interlamellar setae, sparsely barbed in distal half; setae c1–3

remote from anterior border, setae c1 slightly more so than setae c

2 and c

3; vestigial setae f

1 located anteriorly of

setae h1; arrangement of opisthosomal glands and lyrifissures typical for genus.

Genital plates each with nine setae, g1–3 short and fine, located in progenital position, posterior four genital

setae longer and thicker, spiniform; two pairs of aggenital setae present, spiniform, nearly equally thick, ag2 about

1.5 times as long as ag1; setae an

1 and an


3 and adanal setae shorter,

robust and covered with small and sparse spines in distal half; lyrifissures iad situated between setae an3 and ad

3.

7/23/2019 Danik, B1J012129



FIGURES 4–6. Euphthiracarus medogensis sp. nov.: 4, lateral view of body (legs removed); 5, prodorsum, dorsal view; 6, leftside of ventral plate. Scale bars=100 µ m.

7/23/2019 Danik, B1J012129



Setae h of mentum longer than distance between them; palps three-segmented with setal formula: 2-2-8(1);


heterotridactylous.


Remark. This new species is similar to E macrorostralis sp. nov., E. cribrarius and E. foveolatus Aoki, 1980.

It can be easily distinguished from E. macrorostralis sp. nov. by foveolate surface, and rostral setae flagellate, not

thicker than all other prodosal and notogastral setae. The new species differs from E. cribrarius by following

characters: surface of body covered with dense foveolae; posterior four genital setae longer and thicker; rostral

setae thin, smooth and longer. The new species can be easily distinguished from E. foveolatus by following

characters: rostral setae thin, smooth and long, flagellate and bent distally; ag2longer than ag

1.

Euphthiracarus minimus sp. nov.

(Figs. 7–10)

Material examined: Holotype: adult (in alcohol, W-90-79), China: Fujian Province, Jiangle County, Longqishan

Mt. (26°16'28.27"N, 117°38'40.70"E), Xianrentang, from litter under mixed forest, 1300 m a.s.l., 13 Sep., 1990,

leg. Hui-Fu Wang.

Etymology. The new specific name “minimus” is from Latin and refers to the minute aggenital setae.Measurements: Holotype: Prodorsum: length 260, width 185, height 112, setae: ss 83 , ro 40, in 85, le 50, ex 13,

distance between setae: ro–ro 30, in–in 85, le–le 50, in–le 90, le–ro 70; notogaster: length 485, width 320, height

320; setae: c1 60, c

2 60, c

3 50, c

p 46, d

1 50, d

2 45, e

1 55, e

2 50, h

1 60, h

2 55, h

3 52, ps

1 50, ps

2 55, ps

3 55; distance

between setae: c1–d

1 120, d

1 –e

1 110, e

1–h

1 95, h

1– ps

1 85; ventral region: genitoaggenital plate 205×85, anoadanal

plate 235×75.

Colour yellowish to tan. Surface of body covered with dense and small foveolae, except notogaster with

distinct and large foveolae.

Anterior region of prodorsum humped; one pair of wavelike lateral carinae present; sensilla short with narrow

pedicel and dilated head, not pointed distally and covered with robust spines; interlamellar and lamellar setae short,

robust and erect, covered with spines in distal half; rostral setae smooth, semi-erect, spiniform; comparative length:

in>ss>le>ro>ex.Notogaster setae short, similar in shape to interlamellar setae, barbed in distal half; setae c

1–3 remote from

anterior border, setae c1 slightly more so than setae c

2 and c


1 not observed; arrangement of

opisthosomal glands and lyrifissures typical for genus.

Nine pairs of genital and two pairs of aggenital setae present, g1–3 short and fine, located in progenital position,

other setae and aggenital setae slightly longer, spiniform, equally long and thick; setae an1 and an

2 smooth and

flagellate at distal end, setae an3 and adanal setae shorter, robust and covered with small spines in distal half;

lyrifissures iad situated between setae an3 and ad

3.



heterotridactylous.

Distribution. Known only from the type locality.Remark. This new species is easily distinguished from other species of this genus by the combination of

following characters: surface of notogaster with distinct and large foveolae; anterior region of prodorsum humped;

one pair of wavelike lateral carinae present; sensilla with dilated head covered with robust spines; rostral setae

spiniform.

Euphthiracarus oblongus sp. nov.

(Figs. 11–15)

Material examined: Holotype: adult (in alcohol, W-89-125), China: Hubei Province, Badong County

(30°42'18.35"N, 110°17'52.28"E), Tiechanghuang Forestry Centre, from litter under broadleaf forest, 1500 m a.s.l.,

12 Aug., 1989, leg. Yun-Qi Cui.

7/23/2019 Danik, B1J012129



FIGURES 7–10. Euphthiracarus minimus sp. nov.: 7, lateral view of body (legs removed); 8, prodorsum, dorsal view; 9,sensillum; 10, ventral plates. Scale bars: 7–8, 10=100 µ m; 9=50µ m.

7/23/2019 Danik, B1J012129



FIGURES 11–15. Euphthiracarus oblongus sp. nov.: 11, lateral view of body (legs removed); 12, prodorsum, dorsal view; 13,

sensillum; 14, right side of ventral plates; 15, mentum of subcapitulum. Scale bars: 11–12, 14=100µ m; 13, 15=50µ m.

7/23/2019 Danik, B1J012129



Etymology. The new specific name “oblongus” is from Latin and refers to the oblong head of sensilla.




2 100, c

3 95, c

p 100, d

1 76, d

2 70, e

1 110, e

2 70, h

1 116, h

2 75, h

3 72, ps

1 110, ps

2 70, ps

3 65;

distance between setae: c1–d

1 150, d 1 –e

1 130, e1–h

1 90, h

1– ps1 77; ventral region: genitoaggenital plate 180×80,

anoadanal plate 265×65.

Colour yellowish. Surface of body punctuate.Prodorsum with two parallel lateral carinae on each side, upper carina longer and stronger than lower one;

sensilla with long and narrow pedicel and oblong and smooth head; interlamellar and lamellar setae erect, covered

with small and sparse spines in distal half; rostral setae thin, smooth and long, flagellate and directed inwards

distally; comparative length: in>le>ss>ro>ex.

Notogaster with 14 pair of setae, relatively short, similar in shape to interlamellar setae, sparsely barbed in

distal half; setae c1–3

remote from anterior border, setae c1 slightly more so than setae c

2 and c


1

located anteriorly of setae h1; arrangement of opisthosomal glands and lyrifissures typical for genus.


short and fine, located in progenital position, posterior six genital setae

longer and thicker; two pairs of aggenital setae present, spiniform, nearly equally thick, setae ag2 slightly longer

than ag1; setae an

1 and an


3 and adanal setae shorter, robust and

covered with small and sparse spines in distal half; lyrifissures iad situated between setae an3 and ad 3.Setae h of mentum longer than distance between them; palps three-segmented with setal formula: 2-2-8(1);


heterotridactylous.


Remark. This new species is similar to E. klabati Niedbała, 2000, but can be easily distinguished from the

latter species by following characters: surface of body punctuate; two pairs of lateral carinae present; posterior six

genital setae nearly equally long, g9 not obviously longer than other genital setae; all legs heterotridactylous.

Euphthiracarus protrusus sp. nov.

(Figs. 16–19)

Material examined: Holotype: adult (in alcohol, W-91-6), China: Fujian Province, Jiangle County, Longqishan

Mt. (26°16'28.27"N, 117°38'40.70"E), from litter, 26 Jun., 1991, leg. Xiao-Mei Zhang. Paratypes: six adults (in

alcohol, W-91-6), same data as holotype.

Etymology. The new specific name “ protrusus” is Latin for “protrude” and refers to the shape of rostrum.




2 95, c

3 80, c

p 90, d

1 80, d

2 80, e

1 90, e

2 82, h

1 95, h

2 90, h

3 95, ps

1 80, ps

2 85, ps

3 85;

distance between setae: c1–d

1 135, d

1 –e

1 120, e

1–h

1 110, h

1– ps

1 110; ventral region: genitoaggenital plate 210×85,

anoadanal plate 250×75. Paratypes: Prodorsum: length 290–330, width 195–240, height 112–115; notogaster:

length 550–700, width 360–455, height 370–480.

Colour yellowish to brown. Surface of body covered with small foveolae, except region between lateral carinae

of prodorsum with peculiar reticulation.

Rostrum of prodorsum distinctly protruded from lateral view, but not distinctly from dorsal view; two pairs of

lateral carinae present, upper carina strong, lower one indistinct, mixed with reticulation between two lateral

carinae; sensilla with narrow pedicel and dilated head, truncate distally and covered with robust spines;

interlamellar setae long, robust, erect, covered with spines in distal half; lamellar setae similar in shape to

interlamellar setae, sparsely barbed in distal half; rostral setae smooth, semi-erect and spiniform; exobothridial

setae short and fine; comparative length: in>le=ss>ro>ex.

Notogaster setae similar in shape to lamellar setae, sparsely barbed in distal half; setae c1-3 remote from anterior

border, setae c1 slightly more so than setae c

2 and c


1 located anteriorly of setae h

1; arrangement of


7/23/2019 Danik, B1J012129



FIGURES 16–19. Euphthiracarus protrusus sp. nov.: 16, lateral view of body (legs removed); 17, prodorsum, dorsal view; 18,sensillum; 19, ventral plates. Scale bars: 16–17, 19=100 µ m; 18=50µ m.

7/23/2019 Danik, B1J012129




located in progenital position, g1–3

short and fine, g4 thick, other setae

thick and slightly longer; two pairs of aggenital setae present, ag1 minute, ag

2 about twice as long and thick as ag1;

setae an1 and an


3 and adanal setae shorter, robust and covered with

small and sparse spines in distal half; lyrifissures iad situated between setae an3 and ad

3.



heterotridactylous.Distribution. Known only from the type locality.

Remark. This new species is similar to E. takahashii Aoki, 1980 in having similar shape of sensilla, but differs

from the latter species by following characters: surface between lateral carinae with peculiar reticulation, mixed

with lower carina; rostrum of prodorsum distinctly protruded; rostral setae smooth, semi-erect and spiniform, not

bent distally; length of notogastral setae not heterotrichous; posterior four genital setae not much longer than

anterior. This new species is also similar to E. minimus sp. nov., but can be easily distinguished from the latter

species by following characters: two pairs of lateral carinae present, lower one indistinct, mixed with reticulation

between two lateral carinae; surface of notogaster covered with foveolae; ag1 minute, ag

2 about twice as long and

thick as ag1. In addition, these two species also differ from each other by the shape of rostrum.

Euphthiracarus truncatus sp. nov.

(Figs. 20–24)

Material examined: Holotype: adult (in alcohol, W-97-5), China: Guangdong Province, Zhaoqing City,

Dinghushan National Nature Reserve (23° 9'35.51"N, 112°33'15.05"E), from litter under shrub and ruderal, 20

Oct., 1997, leg. Hui-Fu Wang. Paratypes: ten adults (in alcohol, W-97-5), same data as holotype.

Etymology. The new specific name “truncatus” is Latin for “truncate” and refers to the truncate head of

sensilla.



height 360; setae: c1 95, c2 87, c3 60, c p 80, d 1 82, d 2 75, e1 95, e2 75, h1 100, h2 90, h3 70, ps1 95, ps2 75, ps3 70;distance between setae: c

1–d 1 145, d

1 –e

1 125, e1–h

1 105, h

1– ps1 85; ventral region: genitoaggenital plate 185×95,

anoadanal plate 265×75. Paratypes: Prodorsum: length 240–320, width 175–222, height 90–120; notogaster:

length 440–649, width 290–435, height 280–400.

Colour tan to brown. Surface of body covered with dense and great foveolae, except region under lateral

carinae smooth.

Rostrum of prodorsum distinctly protruded; two pairs of lateral carinae present, upper carina longer and

stronger than lower one; sensilla with long and narrow pedicel and dilated head, truncate distally and covered with

long and robust spines; interlamellar setae long, robust, erect, covered with small and sparse spines in distal half;

lamellar setae similar in shape to interlamellar setae, sparsely barbed in distal half; rostral setae smooth and semi-

erect, flagellate and directed outwards distally; exobothridial setae short and fine; comparative length:

in>ss>le>ro>ex.Notogaster setae similar in shape to lamellar setae, sparsely barbed in distal half; setae c

1–3 remote from anterior

border, setae c1 slightly more so than setae c2 and c3; vestigial setae f 1 located anteriorly of setae h1; arrangement of


Genital plates each with seven equally long setae, g1–2

short and fine, located in progenital position, other setae

thick; two pairs of aggenital setae present, ag1 minute, ag

2 slightly thick, about five times as long as ag1; setae an

1

and an2 smooth and flagellate at distal end, setae an

3 and adanal setae shorter, robust and covered with small and

sparse spines in distal half; lyrifissures iad situated between setae an3 and ad

3.



heterotridactylous.


7/23/2019 Danik, B1J012129



FIGURES 20–24. Euphthiracarus truncatus sp. nov.: 20, lateral view of body (legs removed); 21, prodorsum, dorsal view; 22,sensillum; 23, left side of ventral plates; 24, mentum of subcapitulum. Scale bars: 20–21, 23=100 µ m; 22, 24=50µ m.

7/23/2019 Danik, B1J012129



Remark. This new species is similar to E. cribrarius and E. paravesciculus Niedbała, 2004, but differs from

them by following combined characters: rostrum of prodorsum distinctly protruded; sensilla with dilated head,

truncate distally and covered with long spines; rostral setae smooth and semi-erect, flagellate and directed

outwards distally; ag2 much longer than ag

1.

Key to species of Euphthiracarus reported from China

1 Median carina present or rostrum of prodorsum protruded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

- Median carina absent or rostrum of prodorsum not protruded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Prodorsum with median carina . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. carinatus Liu, Wu & Chen, 2011

- Rostrum of prodorsum protruded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3 Length of notogastral setae heterotrichous; sensilla with rounded head, pointed distally and covered with several small spines

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. flagellatus Liu, Wu & Chen, 2011

- Length of notogastral setae not heterotrichous; sensilla with dilated head, truncate distally and covered with robust spines. . . 4

4 Region between upper carina and lower one with peculiar reticulation; rostral setae spiniform, not bent and flagellate distally .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. protrusus sp. nov.

- Region between upper carina and lower one without peculiar reticulation; rostral setae bent and flagellate distally, not spini-

form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. truncatus sp. nov.

5 Prodorsum with one pair of lateral carinae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

- Prodorsum with two pairs of lateral carinae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

6 All legs monodactylous; lateral carinae regular . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. longulus Liu, Wu & Chen, 2011

- All legs heterotridactylous; lateral carinae irregular . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. minimus sp. nov.

7 Head of sensilla dilated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

- Head of sensilla not dilated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8 Head of sensilla smooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. oblongus sp. nov.

- Head of sensilla covered with robust spines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

9 Upper carina undulate; posterior four genital setae obviously longer than anterior ones . . . . . . . . . . . . E. takahashii Aoki, 1980

- Upper carina not undulate; posterior four genital setae not obviously longer than anterior ones. . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. dilatatus Liu, Wu & Chen, 2011

10 All legs monodactylous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. cathayanus Mahunka, 2000

- All legs heterotridactylous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

11 Aggenital setae nearly equally long . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. foveolatus Aoki, 1980

- Aggenital setae ag2 much longer than ag1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1212 Rostral setae thicker than all other prodosal and notogastral setae. . . . . . . . . . . . . . . . . . . . . . . . . . . . E. macrorostralis sp. nov.

- Rostral setae thinner than all other prodosal and notogastral setae. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

13 Length of notogastral setae heterotrichous; c1, c

2, c

3 and c

p flagellate in distal half . . . . . . . E. longisetus Liu, Wu & Chen, 2011

- Length of notogastral setae not heterotrichous; c1, c

2, c

3 and c

p not flagellate in distal half . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

14 Rostral setae longer than interlamellar setae; setae ag2 less than two times as long as ag

1 . . . . . . . . . . . E. medogensis sp. nov.

- Rostral setae shorter than interlamellar setae; setae ag2 more than two times as long as ag

1. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

15 Rostral setae not flagellate at distal end; setae ag2 about three times as long as ag

1 . . . . . . . E. aequalis Liu, Wu & Chen, 2011

- Rostral setae flagellate at distal end; setae ag2 more than four times as long as ag

1. . . . . . . . . . . . .E. cribrarius (Berlese, 1904)

Acknowledgements

We thank Prof. W. Niedbała, Department of Animal Taxonomy and Ecology, Adam Mickiewicz University,

Poland, for providing assistance in identifying, and supplying references to the first author. Sincere thanks are also

due to all the people who collected specimens for us. This work was supported by the Funds for The Excellent

Youth Scholors of “NEIGAE, CAS” (DLSYQ12004), the Knowledge Innovation Programs of Chinese Academy

of Sciences (KSCX2-EW-Z-8), the Major Program of National Natural Science Foundation of China—Fauna

Sinica (31093430), the National Natural Science-Foundation of China (Grant No. 31101617), and the 100 Elites

Plan of the Chinese Academy of Sciences (Grant No. KZCX2-YW-BR-16).

7/23/2019 Danik, B1J012129



References

Aoki, J. (1980) A revision of the oribatid mites of Japan. II. The family Euphthiracaridae. Acta Arachnologica, 39(1), 9–24.

Berlese, A. (1904) Acari nuovi. Manipulus III. Redia, 2, 10–32.

Chen, J., Liu, D. & Wang, H.F. (2010) Oribatid mites of China: a review of progress, with a checklist. Zoosymposia, 4,

186–224.

Liu, D., Wu, D.H. & Chen, J. (2011) Species of Euphthiracarus (Acari: Oribatida: Euphthiracaridae) from China. Zootaxa,

2752, 45–61.Mahunka, S. (2000) Oribatids from Hong Kong II (Acari: Oribatida: Euphthiracaridae) (Acarologica Genavensia XCIV).

Archives des Sciences (Genève), 53(1), 43–48.

Niedbała, W. (2000) The ptyctimous mites fauna of the Oriental and Australian Regions and their centres of origin (Acari:

Oribatida). Genus, supplement, 1–493.

Niedbała, W. (2004) Ptyctimous mites (Acari, Oribatida) of the Neotropical Region. Annales Zoologici, 54(1), 1–288.

danik, b1j012129

Documents