Key to males of Anufrievia from China and Thailand

1. Pygofer dorsal appendage not bifurcate at apex (Figs 1c, d, 2b, 10c, 15c, 16b, 18b, 20b, 21c, 24c)...................... 2

- Pygofer dorsal appendage bifurcate at apex (Figs 3c, 4b, 5b, c, 6c, 7b, 8b, 9b, 11b, c, 12c, 13b, 14c, 17c, d, 19b, c, 22b, 23b).................................................................................................... 11

2. Preatrial process not reaching gonopore (Figs 1k, 15k, l, 16g, 20h, 21i)........................................... 3

- Preatrial process reaching or surpassing gonopore (Figs. 2f, 10i, 18g, 24i, k)....................................... 7

3. Style without distinct apical and subapical teeth (Figs 20e, 21f)................................................. 4

- Style with distinct apical and subapical teeth (Figs 1g, 15f, g, 16c, d)............................................. 5

4. Style with apical part slim (Fig. 20e)......................................... A. symmetrica Cao & Zhang sp. nov.

- Style with apical part triangular (Fig. 21f)..................................... A. triangulata Cao & Zhang sp. nov.

5. Preatrial process almost rectangular in ventral view, apex broad (Figs 15i, j)............ A. quadrata Cao & Zhang sp. nov.

- Preatrial process narrowing apically, apex pointed (Figs 1i, j, 16f)............................................... 6

6. Style with subapical tooth equal in length to apical tooth (Fig. 1g)..................... A. adaucta Cao & Zhang sp. nov.

- Style with subapical tooth shorter than apical tooth (Figs 16c, d)................... A. sphenoides Yang & Zhang sp. nov.

7. Aedeagal apical processes arched medially in ventral view (Fig. 2e)................... A. arcuata Yang & Zhang sp. nov.

- Aedeagal apical processes slightly curved in ventral view (Figs 10h, 18f, 24h, j).................................... 8

8. Aedeagal shaft with base very slim, slightly wider than apex (Figs 24i, k).................. A. zelta Dworakowska n. rec.

- Aedeagal shaft with base broad, much wider than apex (Figs 10i, 18g)............................................ 9

9. Aedeagal shaft constricted subbasally (Fig. 10i).............................. A. jinghongensis Cao & Zhang sp. nov.

- Aedeagal shaft not constricted subbasally (Fig. 18g)......................................................... 10

10. Style with apical tooth extremely small, aedeagal shaft straight (Figs 18c, d).......... A. subdentata Yang & Zhang sp. nov.

- Style with apical tooth relatively long, aedeagal shaft curved dorsad.......................... A. ciconia Dworakowska

11. Aedeagal shaft with processes near middle (Figs 22e, f)......................... A. triprocessa Yang & Zhang sp. nov.

- Aedeagal shaft without process near middle (Figs 3i, 4f, 5g, 6j, 7g, 8h, 9e, 11g, 12i, 13g, 14h, 17j, 19i, 23f)............. 12

12. Apex of style serrated at middle (Figs 4d, 5e, 6g, 13d)....................................................... 13

- Apex of style smooth at middle (Figs 3f, 7d, 8d, e, 9c, 11d, 12f, 14e, 17g, 19f, 23d)................................ 16

13. Upper tooth of pygofer dorsal appendage much shorter than lower one (Fig. 4b)................................................................................................ A. bauhinicola Dworakowska & Viraktamath n. rec.

- Upper tooth of pygofer dorsal appendage subequal to or longer than lower one (Figs 5b, c, 6c, 13b)................... 14

14. Upper tooth of pygofer dorsal appendage longer than the lower one (Fig. 6c)............ A. expansa Cao & Zhang sp. nov.

- Upper tooth of pygofer dorsal appendage almost as long as the lower one (Figs 5b, c, 13b).......................... 15

15. Apex of preatrial process rounded, with one side serrated (Fig. 13f)..................... A. plana Yang & Zhang sp. nov.

- Apex of preatrial process truncate, with sides smooth (Figs 5f)......................... A. curva Yang & Zhang sp. nov.

16. In lateral view, ventral margin of aedeagal shaft protruded subapically (Figs 11g, 12i).............................. 17

- In lateral view, ventral margin of aedeagal shaft straight subapically (Figs 3i, 7g, 8h, 9e, 14h, 17j, 19i, 23f)............. 19

17. Apical tooth of style subequal to subapical tooth (Fig. 11d).......................... A. liubanus Yang & Zhang sp. nov.

- Apical tooth of style greatly shorter than subapical tooth (Fig. 12f)............................................. 18

18. Aedeagal shaft processes relatively long, gonopore central (Figs 12h, i)............... A. parisakazu Cao & Zhang sp. nov.

- Aedeagal shaft processes relatively short, gonopore subapical........................... A. akazu (Matsumura) n. rec.

19. Apex of preatrial process serrated laterally (Fig. 9d)................................. A. fusina Yang & Zhang sp. nov.

- Apex of preatrial process smooth (Figs. 3h, 7f, 8g, 14g, 17i, 19h, 23e)........................................... 20

20. Preatrial process rudimentary, as long as 1/5 of aedeagal shaft (Fig. 3i)................ A. badjawae Dworakowska n. rec.

- Preatrial process much longer than 1/5 of aedeagal shaft (Figs. 7g, 8h, 14h, 17j, 19i, 23f)............................ 21

21. Aedeagal shaft curved dorsad (Fig. 7g)........................................... A. falcata Yang & Zhang sp. nov.

- Aedeagal shaft straight (Figs 8h, 14h, 17j, 19i, 23f).......................................................... 22

22. Apex of style slender (Fig. 14e)............................................ A. qinlingensis Yang & Zhang sp. nov.

- Apex of style footlike (Figs 8d, e, 17g, 19e, f, 23d).......................................................... 23