Nazeris Fauvel 1873
Creators: name: Yang, Yi
name: Hu, Jia-Yao
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Nazeris

description: Key to species of Nazeris in Yunnan, China
1. Head with non-umbilicate punctation (Assing 2013: 160, Fig. 164)....................... N. subdentatus Assing, 2013
- Head with umbilicate punctation (Fig. 2A)................................................................. 2
2. Male sternite VII with posterior margin emarginated to different extend at middle (Fig. 4B).......................... 3
- Male sternite VII with posterior margin truncate or slightly prominent at middle (Figs 2B, 5B)...................... 38
3. Male sternite VII with modified dense and dark setae near the posterior emargination (Fig. 4B; Hu et al. 2011: 17, Fig. 3).. 4
- Male sternite VII without such setae near the posterior emargination (Hu et al. 2011: 18, Fig. 8)..................... 17
4. Abdomen with fine microsculpture on tergites VII and VIII.................................................... 5
- Abdomen lacking microsculpture........................................................................ 7
5. Ventral process of aedeagus not widened at apical third in ventral view, with lateral margins nearly parallel (Assing 2014: 359, Fig. 13)............................................................................ N. virilis Assing, 2014
- Ventral process of aedeagus distinctly widened at apical third in ventral view, with lateral margins curved (Assing 2014: 359, Fig. 6)............................................................................................. 6
6. Ventral process of aedeagus basally with a short and acute projection on either side in ventral view (Assing 2014: 359, Fig. 7), dorso-lateral apophyses widened near apex (Assing 2014: 359, Fig. 6).................... N. brevilobatus Assing, 2014
- Ventral process of aedeagus basally with an obtusely angled projection on either side in ventral view (Assing 2014: 364, Fig. 31), dorso-lateral apophyses widened in apical half (Assing 2014: 364, Fig. 31)................ N. discissus Assing, 2014
7. Male sternite VIII with deep and narrow V-shaped posterior excision (Fig. 4C; Hu et al. 2011: 17, Fig. 4)............... 8
- Male sternite VIII with triangular or U-shaped posterior excision (Assing 2013: 153, Fig. 127)...................... 12
8. Dorso-lateral apophyses of aedeagus extending beyond apex of ventral process (Hu et al. 2011: 17, Fig. 5).............. 9
- Dorso-lateral apophyses of aedeagus extending much shorter than ventral process (Assing 2014: 362, Fig. 19).......... 11
9. Ventral process of aedeagus with tri-lobed apex (Hu et al. 2011: 17, Fig. 5)............... N. nabanhensis Hu et al., 2011
- Ventral process of aedeagus with narrow apex, not tri-lobed (Fig. 4D).......................................... 10
10. Dorso-lateral apophyses of aedeagus with a few weakly-developed sawteeth at lateral margins near base in ventral view (Fig. 4D)....................................................................... N. guohaoi Yang & Hu, sp. nov.
- Dorso-lateral apophyses of aedeagus with smooth lateral margins in ventral view (Assing 2014: 366, Fig. 45).......................................................................................... N. semifissus Assing, 2014
11. Ventral process of aedeagus subapically constricted in ventral view (Assing 2014: 362, Fig. 19); dorso-lateral apophyses widened in apical third in ventral view (Assing 2014: 362, Fig. 19)........................ N. constrictus Assing, 2014
- Ventral process of aedeagus not constricted in ventral view (Assing 2014: 362, Fig. 25); dorso-lateral apophyses widened in apical half in ventral view (Assing 2014: 362, Fig. 25).................................... N. claviger Assing, 2014
12. Dorso-lateral apophyses of aedeagus extending beyond apex of ventral process (Hu et al. 2011: 17, Fig. 5)............. 13
- Dorso-lateral apophyses of aedeagus extending shorter than ventral process (Assing 2014: 362, Fig. 19)............... 15
13. Apical half of ventral process of aedeagus wide, with round lateral margins in ventral view (Assing 2013: 153, Fig. 122)................................................................................. N. lanuginosus Assing, 2013
- Apical half of ventral process of aedeagus very narrow, conical shape in ventral view (Assing 2013: 151, Fig. 116)...... 14
14. Dorso-lateral apophyses of aedeagus widened near apex in ventral view (Assing 2013: 151, Fig. 116)................................................................................................... N. pungens Assing, 2013
- Dorso-lateral apophyses of aedeagus widened near base in ventral view (Watanabe & Xiao 2000: 315, Fig. 6)................................................................................. N. baihuaensis Watanabe & Xiao, 2000
15. Ventral process of aedeagus wide, with wide trapezoidal excision at apex in ventral view (Watanabe & Xiao 2000: 320, Fig. 19).................................................................... N. ishiianus Watanabe & Xiao, 2000
- Ventral process of aedeagus very narrow, with acute apex in ventral view (Watanabe & Xiao 2000: 315, Fig. 6)......... 16
16. Middle of posterior excision of male sternite VII with a triangular projection (Assing 2013: 155, Fig. 133).............................................................................................. N. barbatus Assing, 2013
- Middle of posterior excision of male sternite VII lacking projection (Assing 2013: 151, Fig. 118).................................................................................................... N. peniculatus Assing, 2013
17. Male sternite VIII with a short projection at middle (Hu et al. 2011: 18, Fig. 9)................... N. caoi Hu et al., 2011
- Male sternite VIII lacking projection at middle (Assing 2013: 140, Fig. 57)...................................... 18
18. Male sternite VIII with shallow triangular posterior excision (Assing 2013: 140, Fig. 57)...... N. wuliangicus Assing, 2013
- Male sternite VIII with V-shaped or U-shaped posterior excision (Assing 2013: 143, Fig. 77; Assing 2013: 149, Fig. 101). 19
19. Dorso-lateral apophyses of aedeagus extending beyond apex of ventral process (Assing 2013: 149, Fig. 103)............ 20
- Dorso-lateral apophyses of aedeagus extending shorter than ventral process (Assing 2014: 366, Fig. 38)............... 36
20. Ventral process of aedeagus with excision at apex in ventral view (Assing 2013: 149, Fig. 103).... N. aculeatus Assing, 2013
- Ventral process of aedeagus lacking excision at apex in ventral view (Assing 2013: 149, Fig. 97)..................... 21
21. Ventral process of aedeagus with a triangular projection at middle in each lateral margin (Assing 2013: 149, Fig. 97)...................................................................................... N. cangicus Assing, 2013
- Ventral process of aedeagus lacking projection in lateral margin (Assing 2013: 164, Fig. 188)....................... 22
22. Ventral process of aedeagus with round apex in ventral view (Assing 2013: 164, Fig. 188).......................... 23
- Ventral process of aedeagus with sharp apex in ventral view (Assing 2013: 160, Fig. 161).......................... 31
23. Ventral process of aedeagus short and very wide in ventral view, nearly semicircular (Assing 2013: 167, Fig. 200)...................................................................................... N. bangmaicus Assing, 2013
- Ventral process of aedeagus not very wide in ventral view (Assing 2013: 140, Fig. 63)............................. 24
24. Inner side of dorso-lateral apophyses of aedeagus with triangular or round projection at middle in ventral view (Assing 2013: 140, Fig. 63)....................................................................................... 25
- Inner side of dorso-lateral apophyses of aedeagus lacking projection at middle in ventral view (Assing 2013: 140, Fig. 66)... .................................................................................................. 26
25. Male sternite VIII with V-shaped posterior excision (Assing 2013: 142, Fig. 73); dorso-lateral apophyses of aedeagus with triangular projection at middle in ventral view (Assing 2013: 140, Fig. 63)........... N. daliensis Watanabe & Xiao, 1997
- Male sternite VIII with U-shaped posterior excision (Assing 2013: 164, Fig. 186); dorso-lateral apophyses of aedeagus with round projection at middle in ventral view (Assing 2013: 164, Fig. 188).................. N. circumclusus Assing, 2013
26. Apex of dorso-lateral apophyses of aedeagus distinctly widened (Watanabe & Xiao, 2000: 317, Fig. 9)......................................................................................... N. nomurai Watanabe & Xiao, 2000
- Apex of dorso-lateral apophyses of aedeagus not widened (Assing 2013: 151, Fig. 110)............................ 27
27. Ventral process of aedeagus with pair of wing-like basal laminae ventrally (Assing 2013: 151, Fig. 110)............... 28
- Ventral process of aedeagus lacking basal laminae ventrally (Assing 2013: 143, Fig. 79)........................... 30
28. Basal laminae of ventral process of aedeagus long and wide, nearly triangular (Assing 2013: 151, Fig. 110)............................................................................................ N. zhemoicus Assing, 2013
- Basal laminae of ventral process of aedeagus short and narrow (Assing 2013: 142, Fig. 71)......................... 29
29. Apical half of dorso-lateral apophyses slightly widened in ventral view (Assing 2013: 140, Fig. 66)....................................................................................... N. jizushanensis Watanabe & Xiao, 1997
- Apical half of dorso-lateral apophyses not widened in ventral view (Assing 2013: 142, Fig. 71).. N. nivimontis Assing, 2013
30. Ventral process of aedeagus with round lateral margins in apical half in ventral view (Assing 2013: 143, Fig. 86); dorso-lateral apophyses of aedeagus extending slightly beyond apex of ventral process (Assing 2013: 143, Fig. 86).................................................................................................... N. secatus Assing, 2013
- Ventral process of aedeagus with straight lateral margins in apical half in ventral view (Assing 2013: 143, Fig. 79); dorso-lateral apophyses of aedeagus extending nearly twice beyond apex of ventral process (Assing 2013: 143, Fig. 79).............................................................................................. N. sagittifer Assing, 2013
31. Apex of ventral process of aedeagus curved ventrad in lateral view (Watanabe & Xiao 2000: 319, Fig. 16).................................................................................. N. huanxipoensis Watanabe & Xiao, 2000
- Apex of ventral process of aedeagus not curved in lateral view (Assing 2013: 158, Fig. 147)........................ 32
32. Dorso-lateral apophyses of aedeagus strongly curved inward near apex in ventral view (Assing 2013: 160, Fig. 161)...................................................................................... N. infractus Assing, 2013
- Dorso-lateral apophyses of aedeagus not curved near apex in ventral view (Assing 2013: 155, Fig. 142)............... 33
33. Ventral process of aedeagus with lateral margins curved in apical half in ventral view (Assing 2013: 155, Fig. 142); dorso-lateral apophyses stout in ventral view (Assing 2013: 155, Fig. 142)........................................... 34
- Ventral process of aedeagus with lateral margins nearly straight in apical half in ventral view (Assing 2013: 158, Fig. 148); dorso-lateral apophyses thin in ventral view (Assing 2013: 158, Fig. 148)....................................... 35
34. Dorso-lateral apophyses of aedeagus strongly curved in lateral view (Assing 2013: 155, Fig. 141)................................................................................................... N. firmilobatus Assing, 2013
- Dorso-lateral apophyses of aedeagus nearly straight in lateral view (Assing 2014: 23, Fig. 44)... N. yulongicus Assing, 2014
35. Dorso-lateral apophyses of aedeagus strongly curved in lateral view (Assing 2013: 158, Fig. 154)... N. curvus Assing, 2013
- Dorso-lateral apophyses of aedeagus nearly straight in lateral view (Assing 2013: 158, Fig. 147).. N. spiculatus Assing, 2013
36. Dorso-lateral apophyses very short, extending only to the middle of ventral process (Assing 2014: 366, Fig. 38)......................................................................................... N. lamellatus Assing, 2014
- Dorso-lateral apophyses extending at least to the apical third of ventral process (Watanabe & Xiao 1997: 5, Fig. 6)...... 37
37. Ventral process of aedeagus very wide in ventral view, lateral margins nearly parallel (Watanabe & Xiao 1997: 7, Fig. 9)........................................................................... N. alpinus Watanabe & Xiao, 1997
- Apical half of ventral process of aedeagus very narrow in ventral view, less than half width of the basal part (Watanabe & Xiao 1997: 5, Fig. 6)......................................................... N. giganteus Watanabe & Xiao, 1997
38. Abdominal tergites with shallow microsculpture........................................................... 39
- Abdominal tergites lacking microsculpture................................................................ 40
39. Abdomen with microsculpture on all tergites..................................... N. zhaotongus Yang & Hu, sp. nov.
- Abdomen with microsculpture on tergite VIII and posterior portion of tergite VII............ N. clavilobatus Assing, 2014
40. Dorso-lateral apophyses of aedeagus extending much shorter than ventral process (Fig. 2D)................................................................................................. N. wumengensis Yang & Hu, sp. nov.
- Dorso-lateral apophyses of aedeagus extending beyond or at the same level as apex of ventral process (Assing 2013: 162, Fig. 181; Assing 2013: 167, Fig. 206)....................................................................... 41
41. Apical half of ventral process divided into two curved lamellae in ventral view (Assing 2013: 167, Fig. 206)............................................................................................... N. fissus Assing, 2013
- Apical half of ventral process not divided in ventral view (Assing 2013: 162, Fig. 181)............................ 42
42. Dorso-lateral apophyses of aedeagus with small and dense sawteeth at basal half of lateral margin in ventral view (Fig. 5D).................................................................... N. serratimarginatus Yang & Hu, sp. nov.
- Dorso-lateral apophyses of aedeagus with smooth lateral margins in ventral view (Assing 2013: 162, Fig. 181)......... 43
43. Dorso-lateral apophyses of aedeagus dilated or with projection in the middle in ventral view (Assing 2013: 162, Fig. 181)... .................................................................................................. 44
- Dorso-lateral apophyses of aedeagus slightly constricted in the middle in ventral view (Assing 2014: 389, Fig. 56)....... 47
44. Inner side of dorso-lateral apophyses of aedeagus with flattened and trapezoidal projection at middle in ventral view (Assing 2013: 162, Fig. 181).............................................................. N. vexillatus Assing, 2013
- Inner side of dorso-lateral apophyses of aedeagus with triangular or round projection at middle in ventral view (Assing 2014: 369, Fig. 50)....................................................................................... 45
45. Inner side of dorso-lateral apophyses of aedeagus with round projection at middle in ventral view (Assing 2014: 369, Fig. 50)................................................................................ N. fibulatus Assing, 2014
- Inner side of dorso-lateral apophyses of aedeagus with triangular projection at middle in ventral view (Assing 2013: 164, Fig. 194).............................................................................................. 46
46. Ventral process of aedeagus triangular shape, very short, extending only to half of dorso-lateral apophyses (Assing 2013: 164, Fig. 194); dorso-lateral apophyses with large triangular projection at the middle in ventral view (Assing 2013: 164, Fig. 194)................................................................................ N. hastatus Assing, 2013
- Ventral process of aedeagus narrow, extending to apical third of dorso-lateral apophyses (Assing 2013: 162, Fig. 175); dorso-lateral apophyses with little triangular projection at middle in ventral view (Assing 2013: 162, Fig. 175)................................................................................................. N. meilicus Assing, 2013
47. Dorso-lateral apophyses apically distinctly oblique with acute internal angle in ventral view (Watanabe & Xiao 1993: 132, Fig. 3)...................................................................... N. zhangi Watanabe & Xiao, 1993
- Dorso-lateral apophyses apically stout and vertically truncate in ventral view (Assing 2014: 389, Fig. 56).............. 48
48 Dorso-lateral apophyses of aedeagus curved dorsad in apical half in lateral view (Assing 2014: 369, Fig. 55)............................................................................................. N. bulbosus Assing, 2014
- Dorso-lateral apophyses of aedeagus not curved dorsad in apical half in lateral view (Assing 2014: 371, Fig. 72)......................................................................................... .. N. conicus Assing, 2014
description: Published as part of Yang, Yi & Hu, Jia-Yao, 2025, Four new species of Nazeris Fauvel from Wumengshan Nature Reserve, Yunnan, China (Coleoptera, Staphylinidae, Paederinae), pp. 577-587 in Zootaxa 5575 (4) on pages 583-586, DOI: 10.11646/zootaxa.5575.4.8, http://zenodo.org/record/14762844