Neanurini Cassagnau 1989

Key to genera of the tribe Neanurini Cassagnau, 1989

The key is based mainly on Smolis (2011) with some modifications.

1. Head with complete fusion of lateral tubercles Dl, L and So.................................................. 2

- Head with separation or incomplete fusion of lateral tubercles Dl, L and So (e.g. only tubercles Dl and L fused)......... 4

2. Abdomen IV with tubercles Di separate........................................ Vietnura Deharveng & Bedos, 2000

- Abdomen IV with tubercles Di fused...................................................................... 3

3. Line of chaetae Di 2– De 2 crosses the line Di 1– De 1 on head (cross– type), chaeta O on head present.................................................................................................... Christobella Fjellberg, 1985

- Line of chaetae Di 2– De 2 parallel to the line Di 1– De 1 on head (uncross– type), head without chaeta O.......................................................... Monobella Cassagnau, 1979 (partim: Monobella cassagnaui Deharveng, 1981)

4. Maxilla with two or three dentate lamellae.............................................. Protanura Börner, 1906

- Maxilla without or with one dentate lamella................................................................ 5

5. Line of chaetae Di 2– De 2 crosses the line Di 1– De 1 on head (cross– type), head with 3+3 eyes........................ 6

- Line of chaetae Di 2– De 2 parallel to the line Di 1– De 1 on head (uncross– type), head without or with 1–2+1–2 eyes...... 10

6. Head with tubercles Af and Cl fused, abdomen V longer than abd. IV....................... Thaumanura Börner, 1932

- Head with tubercles Af and Cl separate, abdomen V shorter than abd. IV......................................... 7

7. Tubercles on thorax I absent, abdomen IV with tubercles De shift laterally towards Dl............. Xylanura Smolis, 2011

- Tubercles on thorax I present, abdomen IV with tubercles not shift laterally...................................... 8

8. Chaetae A and B on head same length, tubercles Di on thorax I absent or present............ Neanura MacGillivray, 1893

- Chaeta A shorter than chaeta B on head, tubercles Di on thorax I present......................................... 9

9. Head with separate lateral tubercles Dl, L and So; tubercle Di on th. II–III with 3 chaetae........... Kalanura Smolis, 2007

- Head with fusion of lateral tubercles L and So; tubercle Di on th. II–III with 2 chaetae............... Persanura gen. nov.

10. Abdomen V longer than abd. IV........................................ Caucasanura Kuznetzova & Potapov, 1988

- Abdomen V shorter than abd. IV....................................................................... 11

11. Abdomen IV with tubercles Di, De and Dl completely fused..................... Cansilianura Dallai & Fanciulli, 1983

- Abdomen IV with tubercles Di, De and Dl separate or partially fused (e.g. only tubercles Di and Dl fused)............. 12

12. Abdomen V with tubercles Di shift laterally towards tubercle (De +Dl+L).................. Pumilinura Cassagnau, 1979

- Abdomen V with tubercles not shift laterally............................................................... 13

13. Abdomen VI with tubercles fused into a single large, distinctly bilobate plate..................... Metanura Yosii, 1954

- Abdomen VI with tubercles separate or fused into a large, not bilobate plate...................................... 14

14. Head with complete fusion of central tubercles Af, Cl and Oc.................................................. 15

- Head with separation or incomplete fusion of central tubercles Af, Cl and Oc (e.g. only tubercles Af and Cl fused)...... 19

15. Head with tubercles (Di + De) fused into a single transverse plate.......................... Monobella Cassagnau, 1979

- Head with tubercles (Di + De) separate.................................................................... 16

16. Abdomen IV with tubercles Di fused.................................................................... 17

- Abdomen IV with tubercles Di separate.................................................................. 18

17. Head with chaeta C, tubercle (Af+Cl+Oc) on head with non-reticulate areas (very rarely absent).. Lathriopyga Caroli, 1910

- Head without chaeta C, tubercle (Af+Cl+Oc) on head without non-reticulate areas................. Tetraloba Lee, 1983

18. Cryptopygy (tubercles of abdomen VI not visible from dorsal side) well developed........... Balkanura Cassagnau, 1979

- No cryptopygy (tubercles of abdomen VI clearly visible from dorsal side).................. Catalanura Deharveng, 1982

19. Head with tubercles Di and De fused.................................................................... 20

- Head with tubercles Di and De separate.................................................................. 21

20. Abdomen IV with tubercles Di fused, tubercle (Di + Di) on abd. V with 2+2 chaetae, elementary tubercle Df present on head................................................................................ Albanura Deharveng, 1982

- Combination of characters other than above........................................... Deutonura Cassagnau, 1979

21. Head with tubercles Di fused along midline, head without chaeta De 2........... Ghirkanura Kuznetzova & Potapov, 1988

- Head with tubercles Di separate, head with chaeta De 2...................................................... 22

22. Abdomen III with tubercles Di fused; mandible strongly modified, as long ciliated lamella.................................................................................... Edoughnura Deharveng, Hamra-Kroua & Bedos, 2007

- Abdomen III with tubercles Di separate, mandible not modified............................................... 23

23. Abdomen V with 4 tubercles: 2 Di and 2 (De +Dl+L)................................... Cryptonura Cassagnau, 1979

- Abdomen V with 2 or 3 tubercles: 2 (Di + De +Dl+L) or (Di + Di) and 2 (De +Dl+L)................................ 24

24. Antennal segment I with 9–10 chaetae, head with chaeta D situated closer to chaeta G than chaeta F.................................................................................................. Neanurella Cassagnau, 1968

- Antennal segment I with lesser number of chaetae, chaeta D on head set more posteriorly than chaeta F................................................................................................. Endonura Cassagnau, 1979