Euphthiracarus

Liu, Dong, Wu, Donghui & Chen, Jun, 2012, Six new species of the genus Euphthiracarus (Acari: Oribatida: Euphthiracaridae) from China, Zootaxa 3481, pp. 47-59 : 58

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 .................................................................. 12

12 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, c2, c3 and c p flagellate in distal half....... E. longisetus Liu, Wu & Chen, 2011

- Length of notogastral setae not heterotrichous; c1, c2, c3 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 ag1........... E. medogensis sp. nov.

- Rostral setae shorter than interlamellar setae; setae ag2 more than two times as long as ag1 ........................... 15

15 Rostral setae not flagellate at distal end; setae ag2 about three times as long as ag1....... E. aequalis Liu, Wu & Chen, 2011

- Rostral setae flagellate at distal end; setae ag2 more than four times as long as ag1 ............. E. cribrarius ( Berlese, 1904)