Four new species of Nazeris Fauvel from Wumengshan Nature Reserve, Yunnan, China (Coleoptera, Staphylinidae, Paederinae) Author Yang, Yi 0000-0003-1132-9103 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai, 200234, China. 931009245@qq.com Author Hu, Jia-Yao 0000-0002-9861-9551 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai, 200234, China. hujiayao@shnu.edu.cn text Zootaxa 2025 2025-01-28 5575 4 577 587 https://doi.org/10.11646/zootaxa.5575.4.8 journal article 308071 10.11646/zootaxa.5575.4.8 cba0d36a-ea2c-4eb9-9239-67ffd966dd7a 1175-5326 14762844 170DB620-EF80-4D0B-968E-23790471262E 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