Nazeris, Fauvel, 1873

Hu, Jia-Yao & Qiao, Yu-Jia, 2019, Five new species of Nazeris Fauvel in Guangxi, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 4543 (3), pp. 431-441 : 440-441

Key to species of Nazeris in Guangxi, China

1 Head with non-umbilicate punctation ( Fig. 35 ).............................................................. 2

- Head with umbilicate punctation ( Fig. 7 )................................................................... 3

2 Pronotum with narrow impunctate elevation in posteriorly half ( Hu & Li 2017: 337, Fig. 15 ); dorso-lateral apophyses of aedeagus not widened near middle in ventral view ( Hu & Li 2017: 337, Fig. 18 ).................... N. alatus Hu & Li, 2017

- Pronotum with unconspicuous or lacking impunctate elevation in posteriorly half ( Fig. 35 ); dorso-lateral apophyses of aedeagus widened near middle in ventral view ( Fig. 38 ).................................... N. yanzhuqii Hu & Qiao , sp. n.

3 Body reddish brown ( Fig. 17 ), at most 6.0 mm.............................................................. 4

- Body dark brown ( Fig. 25 ), at least 6.1 mm ................................................................ 13

4 Head and pronotum with fine microsculpture ( Figs 18, 19 ).............................. N. rugosus Hu & Qiao , sp. n.

- Head and pronotum lacking microsculpture................................................................. 5

5 Abdomen with fine microsculpture on all tergites........................................... N. qini Hu & Li, 2012

- Abdomen lacking microsculpture......................................................................... 6

6 Dorso-lateral apophyses of aedeagus extending to the same level as apex of the median lobe.......................... 7

- Dorso-lateral apophyses of aedeagus extending much beyond apex of median lobe.................................. 8

7 Ventral process of aedeagus narrow, constricted to sharp apex in ventral view ( Hu et al. 2012: 36, Fig. 4).............................................................................................. N. dayaoensis Hu & Li, 2012

- Ventral process of aedeagus conspicuously broad, with round apex in ventral view ( Assing 2016: 307, Fig. 11 )........................................................................................... N. latilobatus Assing, 2016

8 Ventral process of aedeagus nearly triangular, with narrow apex in ventral view ( Assing 2016: 309, Fig. 16 )................................................................................................ N. obtortus Assing, 2016

- Ventral process of aedeagus broad, with wide apex in ventral view............................................... 9

9 Ventral process of aedeagus provided with a pair of apicad narrow processes on dorsal side of apex ( Hu et al. 2012: 38, Fig. 12 ) N. luoi Hu & Li, 2012

- Ventral process of aedeagus lacking processes near apex...................................................... 10

10 Ventral process of aedeagus with small semi-circular excision at apex in ventral view ( Fig. 15 ).................................................................................................. N. maoershanus Hu & Qiao , sp. n.

- Ventral process of aedeagus lacking excision at apex in ventral view............................................ 11

11 Ventral process of aedeagus with round apex in ventral view and with a pair of round basal laminae ventrally ( Hu et al. 2013: 87, Fig. 4).................................................................. N. damingshanus Hu & Li, 2013

- Ventral process of aedeagus with truncate apex in ventral view and with a pair of thin basal laminae ventrally........... 12

12 Dorso-lateral apophyses of aedeagus roundly widened at apex in ventral view ( Hu & Li 2017: 336, Fig. 13 )........................................................................................... N. huapingensis Hu & Li, 2017

- Dorso-lateral apophyses of aedeagus narrowed at apex in ventral view ( Hu et al. 2012: 39, Fig. 16 ).... N. tani Hu & Li, 2012

13 Dorso-lateral apophyses of aedeagus extending slightly beyond apex of ventral process............................. 14

- Dorso-lateral apophyses of aedeagus not reaching apex of ventral process........................................ 16

14 Dorso-lateral apophyses of aedeagus broad, distinctly widened near middle ( Hu et al. 2012: 41, Fig. 28 )................................................................................................ N. megalobus Hu & Li, 2012

- Dorso-lateral apophyses of aedeagus slender, not widened near middle.......................................... 15

15 Male sternite VII shallowly concaved in the middle ( Fig. 26 ); dorso-lateral apophyses of aedeagus widened near apex in ventral view ( Fig. 28 )............................................................. N. yuyimingi Hu & Qiao , sp. n.

- Male sternite VII not concaved in the middle ( Hu & Li 2017: 340, Fig. 26 ); dorso-lateral apophyses of aedeagus not widened near apex in ventral view ( Hu & Li 2017: 340, Fig. 28 ).................................. N. chenyanae Hu & Li, 2017

16 Dorso-lateral apophysis of aedeagus greatly expanded in apical half ( Hu et al. 2012: 42, Fig. 34 )... N. grandis Hu & Li, 2012

- Dorso-lateral apophysis of aedeagus slender, not expanded in apical half......................................... 17

17 Ventral process of aedeagus extremely elongate, about twice as long as dorso-lateral apophysis ( Hu et al. 2013: 88, Fig. 10 )................................................................................ N. longilobus Hu & Li, 2013

- Ventral process of aedeagus not extremely elongate.......................................................... 18

18 Ventral process of aedeagus with round apex ( Assing 2016: 307, Fig. 4)..................... N. bihamatus Assing, 2016

- Apex of ventral process of aedeagus divided into two branches in ventral view.................................... 19

19 Sternite VII with posterior margin weakly prominent at middle ( Hu & Li 2017: 338, Fig. 21 ); ventral process of aedeagus with thin apical branches ( Hu & Li 2017: 338, Figs 23, 24 ); dorso-lateral apophyses of aedeagus slightly curved in lateral view ( Hu & Li 2017: 338, Fig. 24 ).............................................................. N. exilis Hu & Li, 2017

- Sternite VII with posterior margin truncate at middle ( Fig. 31 ); ventral process of aedeagus with wide apical branches (Figs 3 3, 34); dorso-lateral apophyses of aedeagus straight in lateral view ( Fig. 34 ).............. N. biacuminatus Hu & Qiao , sp. n.

Figures

FIGURES 35–39. Nazeris yanzhuqii 35. forebody; 36. male sternite VII; 37. male sternite VIII; 38. aedeagus, in ventral view; 39. aedeagus, in lateral view. Scale bars: 35: 1 mm, 36–39: 0.5 mm

FIGURES 7–11. Nazeris latilobatus 7. forebody; 8. male sternite VII; 9. male sternite VIII; 10. aedeagus, in ventral view; 11. aedeagus, in lateral view. Scale bars: 7: 1 mm, 8–11: 0.5 mm

FIGURES 12–16. Nazeris maoershanus 12. forebody; 13. male sternite VII; 14. male sternite VIII; 15. aedeagus, in ventral view; 16. aedeagus, in lateral view. Scale bars: 12: 1 mm, 13–16: 0.5 mm

FIGURES 17–24. Nazeris rugosus 17. forebody; 18. dorsal surface of head; 19. ventral surface of head; 20. abdominal tergite VI; 21. male sternite VII; 22. male sternite VIII; 23. aedeagus, in ventral view; 24. aedeagus, in lateral view. Scale bars: 17: 1 mm, 18–20: 0.1 mm, 21–24: 0.5 mm

FIGURES 25–29. Nazeris yuyimingi 25. forebody; 26. male sternite VII; 27. male sternite VIII; 28. aedeagus, in ventral view; 29. aedeagus, in lateral view. Scale bars: 25: 1 mm, 26–29: 0.5 mm

FIGURES 30–34. Nazeris biacuminatus 30. forebody; 31. male sternite VII; 32. male sternite VIII; 33. aedeagus, in ventral view; 34. aedeagus, in lateral view. Scale bars: 30: 1 mm, 31–34: 0.5 mm