Acrotritia

Liu, Dong & Chen, Jun, 2015, Acrotritia species (Acari: Oribatida: Euphthiracaridae) from China with description of a new species, Zootaxa 3937 (1), pp. 127-146 : 145

Key to species of Acrotritia known from China

1 Lateral carinae of the prodorsum forked distally............................................................. 2

- Lateral carinae of the prodorsum simple and not forked....................................................... 5

2 All tarsi of legs monodactylous.................................................... .. A. refracta ( Niedbała, 1998)

- Tarsi of legs I bidactylous, tarsi of legs II–IV heterotridactylous................................................. 3

3 Surface of body punctate; fork of lateral carinae short and indistinct, bifurcated at insertion level of rostral setae......................................................................................... A. corletti ( Mahunka, 2000)

- Surface of body with polygonal sculpture or foveolate; fork of lateral carinae long and distinct, bifurcated at insertion level of lamellar setae......................................................................................... 4

4 Surface of body with polygonal sculpture; prodorsum abruptly humped near insertion level of rostral setae in lateral view................................................................................. A. koreensis ( Mahunka, 1997)

- Surface of body foveolate; prodorsum not abruptly humped near insertion level of rostral setae in lateral view................................................................................................. A. tibetensis sp. nov.

5 All tarsi of legs monodactylous........................................................................... 6

- Tarsi of legs I bidactylous, tarsi of legs II–IV heterotridactylous................................................. 7

6 Sensilla setiform, slightly swollen distally.............................................. A. simile ( Mahunka, 1982)

- Sensilli with fusiform head............................................................. A. sinensis Jacot, 1923

7 Sensilla setiform without head...................................................... A. gracile ( Niedbała, 2000)

- Sensilla with swollen head.............................................................................. 8

8 Prodorsum abruptly humped near insertion level of rostral setae in lateral view............... A. hauseri ( Mahunka, 1991)

- Prodorsum not abruptly humped near insertion level of rostral setae in lateral view............ A. ardua ( C. L. Koch, 1841)