Vitronura Yosii, 1969

Jiang, Jigang & Xia, Hu, 2018, Two new species and a new record species of genus Vitronura (Collembola: Neanuridae) from East China, Zoological Systematics 43 (2), pp. 169-177 : 171

Genus Vitronura Yosii, 1969

Key to species of genus Vitronura Yosii, 1969 (modified base on Jiang & Yin, 2012, Gao et al., 2012).

1. Cephalic tubercle Oc with 1 or 2 chaetae............................................................................................................................................. 2 Cephalic tubercle Oc with 3 chaetae .................................................................................................................................................. 13

2. Cephalic tubercle Oc with 1 chaeta......................................................................................................................................................3 Cephalic tubercle Oc with 2 chaetae .................................................................................................................................................... 4

3. Cephalic tubercle An with 1 chaeta (Vietnam) ....................................................................... V. mascula Smolis & Deharveng, 2006 Cephalic tubercle An with 2 chaetae (China (Shaanxi))................................................................. V. shaanxiensis Jiang & Yin, 2011

4. Tubercles Di on head fused along midline (China (Taiwan))................................................................ V. tubercula Lee & Kim, 1990 Tubercles Di on head separate.............................................................................................................................................................. 5

5. Chaeta O on head present.....................................................................................................................................................................9 Chaeta O on head absent ......................................................................................................................................................................6

6. Tubercles Di on Abd. V fused along midline (China (Hongkong)) ....................................................................... V. sinica Yosii, 1976 Tubercles Di on Abd. V separate.......................................................................................................................................................... 7

7. Tubercle De of Th. II with 5 chaetae (Philippines) ........................................................................................... V. luzonica Yosii, 1976 Tubercle De of Th. II with 4 chaetae.................................................................................................................................................... 8

8. Tubercle An of head with C and E chaetae (Papua New Guinea, Brunei)........................ V. gressitti Cassagnau & Deharveng, 1981 Tubercle An of head without C and E chaetae (Japan)................................................. V. kunigamiensis Tanaka & Hasegawa, 2010

9. Tubercles Di on Th. I with 2 chaetae (China (Guangdong)) ............................................................................. V. latior (Rusek, 1967) Tubercles Di on Th. I with 1 chaeta ................................................................................................................................................... 10

10. Claw with inner tooth......................................................................................................................................................................... 11 Claw without inner tooth (Japan, Solomon Islands)................................................................................... V. mandarina (Yosii, 1954)

11. Tubercle Di on Abd. V with 2 chaetae (Korea) .......................................................................................... V. namhaeiensis Lee, 1974 Tubercle Di on Abd. V with 3 chaetae ...............................................................................................................................................12

12. Body length 0.5 mm, mandibular apical tooth not tridentated, macrochaetae not ciliated (China (Taiwan), Japan, Indonesia)............. ...................................................................................................................................................................... V. pygmaea (Yosii, 1954) Body length 1.9–2.4 mm, mandibular apical tooth tridentated, macrochaetae trongly ciliated (China (Hunan))................................... ................................................................................................................................................. V. ciliata Wang, Wang & Jiang, 2016

13. Cephalic tubercle De with 2 chaetae (South Africa) ..................................................................................... V. joanna (Coates, 1968) Cephalic tubercle De with 3 chaetae .................................................................................................................................................. 14

14. Cephalic tubercles Di fused or weakly fused along midline .............................................................................................................. 15 Cephalic tubercles Di distinctly separate ........................................................................................................................................... 17

15. Cephalic chaeta O on head present.....................................................................................................................................................16 Cephalic chaeta O on head absent (China (Taiwan), Southeast Asia) ................................................... V. singaporiensis (Yosii, 1959)

16. Body marcochaetae not strongly barbulate (Costa Rica)........................................................................ V. macgillivrayi (Denis, 1933) Body marcochaetae strongly barbulate (China (Shanghai)) ............................... V. setaebarbulata Gao, Bu & Palacios-Vargas 2012

17. Claw with inner tooth.........................................................................................................................................................................18 Claw without inner tooth.................................................................................................................................................................... 20

18. Mandible with 3 denticles, tubercle De+DL of Abd. V with 4 (3+s) chaetae (North Korea) .. V. dentata Deharveng & Weiner, 1984 Mandible with 4 or 5 denticles, tubercle De+DL of Abd. V with 5 (4+s) chaetae..............................................................................19

19. Mandible with 5 denticles, cephalic tubercle Dl fused with tubercle L+So (China (Sichuan)) .............................................................. ................................................................................................................................................. V. qingchengensis Jiang & Yin, 2012 Mandible with 4 denticles, cephalic tubercle Dl separate from tubercle L+So (China (Hunan)) ........................................................... .......................................................................................................................................... V. paraacuta Wang, Wang & Jiang, 2016

20. Cephalic chaeta O on head absent ( China (Zhejiang )) ............................................................................................ V. tianmua sp. nov. Cephalic chaeta O on head present.....................................................................................................................................................21

21. Head with 14 tubercles (China (Shanghai)) ......................................................... V. quartadecima Gao, Bu & Palacios-Vargas 2012 Head with 12 tubercles....................................................................................................................................................................... 22

22. Labrum distally ogival (North Korea)........................................................................................ V. acuta Deharveng & Weiner, 1984 Labrum distally not ogival ................................................................................................................................................................. 23

23. Tubercle De+Dl on Abd. V with 3 (2+s) chaetae, body macrochaetae and mesochaetae more or less serrate, mandible with 5 teeth (China (Zhejiang)).......................................................................................................................................... V. zhejiangensis sp. nov. Tubercle De+Dl on Abd. V with 5 (4+s) chaetae, body macrochaetae and mesochaetae smooth, mandible with 3 teeth (North Korea, Switzerland, Kenya, Mexico)........................................................................................................................... V. giselae (Gisin, 1950)