Chrysotimus Loew

Wang, Mengqing, Yang, Ding & Grootaert, Patrick, 2005, Chrysotimus Loew from China (Diptera: Dolichopodidae), Zootaxa 1003 (1), pp. 1-32 : 3-5

Key to species (males) of Chrysotimus Loew from China

1. Hind tarsomere 1 without black ventral bristles at base................................................ 2

­ Hind tarsomere 1 with black ventral bristles at base .................................................... 3

2. Epandrium with truncate apex, lateral process on epandrium thick and truncate ( Fig. 25 )... Guangxi .......................................... Chrysotimus guangxiensis Yang and Saigusa

­ Epandrium with acute apex, lateral process on epandrium with deep incision apically ( Fig. 46 ) ... China............................................................... Chrysotimus sinensis Parent

3. Four to five dc, acr absent ............................................................................................. 4

­ Six dc, acr present ...................................................................................................... 11

4 Arista dorsal; epandrium with broad lateral process ( Fig. 20 )... Zhejiang ..................... .............................................................................................. Chrysotimus dorsalis Yang

­ Arista sub­apical or apical; epandrium with thin finger­like process ( Figs. 6 , 8 , 13 ) .. 5

5. Antennal scape and pedicel yellow ... Zhejiang .............. Chrysotimus basiflavus Yang

­ Antenna wholly black or blackish................................................................................. 6

6. Five dc; fore tarsomere 1 without row of v... Zhejiang .................................................. ..................................................................................... Chrysotimus apicicurvatus Yang

­ Four dc; fore tarsomere 1 with row of v........................................................................ 7

7. Hind tarsomere 1 with more than 14 black ventral bristles at base............................... 8

­ Hind tarsomere 1 with less than 12 black ventral bristles at base................................. 9

8. Hind tarsomere 1 with 22 black ventral bristles at base; surstylus on epandrium not furcated apically, cercus broad with acute apex ( Fig. 15 ) ... Gansu ............................... ........................................................................................... Chrysotimus chikuni sp. nov.

­ Hind tarsomere 1 with 14–16 black ventral bristles at base; surstylus on epandrium with deeply furcated apex, cercus round ( Fig. 59 ) ... Guangxi ....................................... ............................................................................................... Chrysotimus xuae sp. nov.

9. Hind tarsomere 1 with 3–4 black ventral bristles at base; surstylus basally without inner process ... Beijing .............................................. Chrysotimus songshanus sp. nov.

­ Hind tarsomere 1 with about 10 black ventral bristles at base; surstylus basally with inner process ( Figs. 12 , 44 ) ........................................................................................ 10

10. Hairs and bristles on thorax dark brown; hind tibia with 1 ad; surstylus on epandrium apically round, without apical incision ( Fig. 13 )... Yunnan ........................................... ......................................................................... Chrysotimus bispinus Yang and Saigusa

­ Hairs and bristles on thorax yellow; hind tibia with 2 ad; surstylus on epandrium apically acute, with apical incision ( Fig. 45 ) ... Hubei, Shaanxi, Yunnan ........................... ............................................................. Chrysotimus shennongjianus Yang and Saigusa

11. Acr 2–5 pairs .............................................................................................................. 12

­ Acr 6–10 pairs ............................................................................................................. 18

12. Hind tarsomere 1 with 4–8 sparse black ventral bristles at base ................................ 13

­ Hind tarsomere 1 with 1 or 2 bundles of dense black ventral bristles at base ........... 14

13. R 4+5 and M slightly convergent apically; hind tarsomere 1 with 2 bundles of black ventral bristles at base; epandrium with short and broad process, surstylus with broad apex ( Fig. 10 ) ... Shaanxi ......................................... Chrysotimus bifascia Yang and Saigusa

­ R 4 +5 and M parallel apically; hind tarsomere 1 with bundle of black ventral bristles at base; epandrium with long and acute process, surstylus with acute apex ( Fig. 51 ) ... Shaanxi, Yunnan ............................................ Chrysotimus unifascia Yang and Saigusa

14. Hind tarsomere 1 without rowed v; epandrium with round process, both surstylus and cercus with round apex ( Fig. 61 ) ... Yunnan .................................................................. .................................................................. Chrysotimus yunlonganus Yang and Saigusa

­ Hind tarsomere 1 with row of v; epandrium with acute process, surstylus or cercus not as above ...................................................................................................................... 15

15. Hairs and bristles on thorax brown; epandrium with long process (longer than epandrium), surstylus on epandrium furcated apically ( Fig. 40 ) ... Guangxi ........................ ............................................................................. Chrysotimus sanjiangyuanus sp. nov.

­ Hairs and bristles on thorax yellow; epandrium without long process, surstylus on epandrium not furcated apically.................................................................................. 16

16. Hind femur with row of ad and pd; hind tarsomere 1 with 4 black ventral bristles; cercus long and narrow ( Fig. 56 ) ... Beijing ........................................................................ .............................................. Chrysotimus xiaolongmensis Zhang, Yang and Grootaert

­ Hind femur without distinct ad or pd; hind tarsomere 1 with 6–8 black ventral bristles ..................................................................................................................................... 17

17. Hind tarsomere 1 with 6 erect short black ventral bristles at base; epandrium with bifurcated process, cercus with broad base and acute apex ( Fig. 4 ) ... Guangdong ........ ......................................................................................... Chrysotimus acutatus sp. nov.

­ Hind tarsomere 1 with 8 erect short black ventral bristles at base; epandrium with acute process; cercus round ( Fig. 23 ) ... Guangdong ... Chrysotimus guangdongensis sp. nov.

18. First flagellomere subtriangular, as long as wide; surstylus and cercus slender ( Fig. 34 ) ... Ningxia .................................................................... Chrysotimus ningxianus sp. nov.

­ First flagellomere round, wider than long; surstylus and cercus short and broad ( Figs. 37 , 42 ) ........................................................................................................................ 19

19. Hind tarsomere 1 with row of (about 10) pv .............................................................. 20

­ Hind tarsomere 1 without distinct pv ......................................................................... 22

20. Hind tarsomere 1 with 10–12 black ventral basal bristles; mid tibia without pd or pv ... Shaanxi, Yunnan ....................................... Chrysotimus qinlingensis Yang and Saigusa

­ Hind tarsomere 1 with about 20 black ventral basal bristles; mid tibia with 2 pd and 1 pv 21

21. Fore and mid tarsomere 1 without distinct v; epandrium basally with short process ( Fig. 42 ) ... Shaanxi .......................................... Chrysotimus setosus Yang and Saigusa

­ Fore and mid tarsomere 1 each with row of 5–6 v; epandrium basally with long and acute process ( Fig. 54 ) ... Guangdong ............... Chrysotimus xiaohuangshanus sp. nov.

22. Hind tarsomere 1 with 2–3 bundles of 14–15 black ventral bristles on basal 1/6 (which contains 1–2 small tight bundles and 1 large loose bundle); surstylus finger­like; hypandrium without apical incision ( Fig. 18 ) ... Yunnan ................................................ ........................................................................ Chrysotimus digitatus Yang and Saigusa

­ Hind tarsomere 1 with bundle of black ventral bristles; surstylus rather wide and thick; hypandrium with small apical incision ( Figs. 27 , 30 )................................................. 23

23. Hairs and bristles on thorax dark brown; hind tarsomere 1 with 15–16 black ventral bristles at base ... Yunnan ........................... Chrysotimus pingbianus Yang and Saigusa

­ Hairs and bristles on thorax pale or yellow; hind tarsomere 1 with about 10 black ventral bristles .................................................................................................................. 24

24. Hind tarsomere 1 with 12 black bristles; palpus dark brown; 8 irregularly paired acr; cercus with round apex ... Yunnan .................... Chrysotimus incisus Yang and Saigusa

­ Hind tarsomere 1 with 7–8 black bristles; palpus yellow; 6 irregularly paired acr; cercus with acute apex ... Yunnan .......................... Chrysotimus lijianganus Yang and Saigusa

Figures

FIGURE 46. Chrysotimus sinensis Parent (male). 46. genitalia, lateral view.

FIGURES 24–25. Chrysotimus guangxiensis Yang and Saigusa (male). 24. First flagellomere, lateral view; 25. genitalia, lateral view. (After Yang and Saigusa, 2001a)

FIGURES 19–20. Chrysotimus dorsalis Yang (male). 19. First flagellomere, lateral view; 20. genitalia, lateral view. (After Yang, 2001)

FIGURES 5–6. Chrysotimus apicicurvatus Yang (male). 5. First flagellomere, lateral view; 6. genitalia, lateral view. (After Yang, 2001)

FIGURES 7–8. Chrysotimus basiflavus Yang (male). 7. First flagellomere, lateral view; 8. genitalia, lateral view. (After Yang, 2001)

FIGURES 11–13. Chrysotimus bispinus Yang and Saigusa (male). 11. First flagellomere, lateral view; 12. tip of genitalia, ventral view; 13. genitalia, lateral view. (After Yang and Saigusa, 2001b)

FIGURES 14–16. Chrysotimus chikuni sp. nov. (male). 14. First flagellomere, lateral view; 15. genitalia, lateral view, 16. tip of genitalia, ventral view.

FIGURES 57–59. Chrysotimus xuae sp. nov. (male). 57. wing; 58. first flagellomere, lateral view; 59. genitalia, lateral view.

FIGURES 43–45. Chrysotimus shennongjianus Yang and Saigusa (male). 43. First flagellomere, lateral view; 44. tip of genitalia, ventral view; 7. genitalia, lateral view. (After Yang and Saigusa, 2001a)

FIGURES 9–10. Chrysotimus bifascia Yang and Saigusa (male). 9. First flagellomere, lateral view; 10. genitalia, lateral view. (After Yang and Saigusa, 2005)

FIGURES 50–51. Chrysotimus unifascia Yang and Saigusa (male). 50. First flagellomere, lateral view; 51. genitalia, lateral view. (After Yang and Saigusa, 2005)

FIGURES 60–61. Chrysotimus yunlonganus Yang and Saigusa (male). 60. First flagellomere, lateral view; 61. genitalia, lateral view. (After Yang and Saigusa, 2001b)

FIGURES 38–40. Chrysotimus sanjiangyuanus sp. nov. (male). 38. Wing; 39. first flagellomere, lateral view; 40. genitalia, lateral view.

FIGURES 55–56. Chrysotimus xiaolongmensis Zhang, Yang and Grootaert (male). 55. Antenna (excluding scape), lateral view; 56. genitalia, lateral view. (After Zhang, Yang and Grootaert, 2003)

FIGURES 1–4. Chrysotimus acutatus sp. nov. (male). 1. Wing; 2. first flagellomere, lateral view; 3. genitalia, ventral view; 4. genitalia, lateral view.

FIGURES 21–23. Chrysotimus guangdongensis sp. nov. (male). 21. Wing; 22. first flagellomere, lateral view; 23. genitalia, lateral view.

FIGURES 32–34. Chrysotimus ningxianus sp. nov. (male). 32. Apical half of wing; 33. first flagellomere, lateral view; 34. genitalia, lateral view.

FIGURES 36–37. Chrysotimus qinlingensis Yang and Saigusa (male). 36. First flagellomere, lateral view; 37. genitalia, lateral view. (After Yang and Saigusa, 2005)

FIGURES 41–42. Chrysotimus setosus Yang and Saigusa (male). 41. First flagellomere, lateral view; 42. genitalia, lateral view. (After Yang and Saigusa, 2005)

FIGURES 52–54. Chrysotimus xiaohuangshanus sp. nov. (male). 52. Wing; 53. first flagellomere, lateral view; 54. genitalia, laterial view.

FIGURES 17–18. Chrysotimus digitatus Yang and Saigusa (male). 17. First flagellomere, lateral view; 18. genitalia, lateral view. (After Yang and Saigusa, 2001b)

FIGURES 26–28. Chrysotimus incisus Yang and Saigusa (male). 26. First flagellomere, lateral view; 27. tip of genitalia, ventral view; 28. genitalia, lateral view. (After Yang and Saigusa, 2001b)

FIGURES 29–31. Chrysotimus lijianganus Yang and Saigusa (male). 29. First flagellomere, lateral view; 30. tip of genitalia, ventral view, 31. genitalia, lateral view. (After Yang and Saigusa, 2001b)