Phyllomyza

Xi, Yuqiang, Zhu, Yongqiang, Liu, Chang, Yang, Ding & Yin, Xinming, 2023, Three new species of Phyllomyza Fallén (Diptera: Milichiidae) from Yintiaoling National Nature Reserve of Chongqing, with an updated key from China, Zootaxa 5257 (1), pp. 115-122 : 116-117

Key to species (males) of Phyllomyza from China

1. Palpus almost bare, without setulae....................................................................... 2

-. Palpus with short setulae at tip and ventral side............................................................ 12

2. Frons with 3 or 5 interfrontal setae....................................................................... 3

-. Frons with 4 interfrontal setae........................................................................... 6

3. Frons with 5 interfrontal setae.................................................. P. prolongatusa Xi, Yang & Yin

-. Frons with 3 interfrontal setae........................................................................... 4

4. Postocellar setae converging; first flagellomere irregularly quadrate.............. P. nigrimarginata Xi, Shen, Yang & Yin

-. Postocellar setae cruciate; first flagellomere irregularly circular................................................ 5

5. Gena approximately one-ninth of eye height; cercus lacking ventral appendix................. P. fuscusa Xi, Yin & Yang

-. Gena approximately one-eleventh of eye height; cercus with short ventral appendix. P. gangliiformisa Xi, Shen, Yang & Yin

6. Cercus with short ventral appendix; arista 2.5 times longer than first flagellomere................................. · 7

-. Cercus lacking ventral appendix; arista 3 times longer than first flagellomere..................................... 8

7. Gena relatively broad, approximately one-sixth of eye height; palpus long.............. P. glossophyllusa Xi, Yin & Yang

-. Gena relatively narrow, approximately one-eighth of eye height; palpus short·................... · P. nudipalpis Malloch

8. First flagellomere 1.5 times wider than long ·............................................................... 9

-. First flagellomere less than 1.5 times wider than long........................................................ 10

9. Gena relatively broad, approximately one-sixth of eye height; first flagellomere irregularly circular ·................................................................................................. P. aureolusa Xi, Yin & Yang

-. Gena relatively narrow, approximately one-eleventh of eye height; first flagellomere irregularly quadrangular........................................................................................ · P. ruiliiensis Xi, Yang & Yin

10. Arista 2.5 times as long as first flagellomere......................................... P. luteigenis Xi, Yang & Yin

-. Arista 3.0 times as long as first flagellomere.............................................................. 11

11. Gena approximately one-fourteenth of eye height; knob of halter brownish.............. P. guangxiensis Xi, Yang & Yin

-. Gena approximately one-tenth of eye height; knob of halter yellowish.................... P. leioipalpus Xi, Yin & Yang

12. Palpus slightly longer, at least 0.6 mm long ·.............................................................. 13

-. Palpus length less than 0.6 mm long.................................................................... · 15

13. Frons with 4 interfrontal setae; eye 1.5 times higher than long.......................... P. basilatusa Xi, Yin & Yang

-. Frons with 3 interfrontal setae; eye 1.4 times higher than long··................................................ 14

14. First flagellomere irregularly quadrangular; lunule brownish ·....................... P. longisetae Xi, Shen, Yang & Yin

-. First flagellomere irregularly rectangular; lunule darkish grey ··............................... P. sinensis Xi & Yang

15. Cercus with ventral appendix.......................................................................... 16

-. Cercus lacking ventral appendix........................................................................ 23

16. Frons with 3 interfrontal setae ·......................................................................... 17

-. Frons with 4 interfrontal setae......................................................................... · 18

17. Eye 1.5 times higher than long; knob of halter darkish brown........................... P. motuoensis Xi, Yang & Yin

-. Eye 1.3 times higher than long; knob of halter yellowish white........................... P. striolatum Xi, Yang & Yin

18. Vibrissal angle relatively acute ·....................................................... · P. obliquusa Xi & Yin

-. Vibrissal angle relatively blunt ·........................................................................ · 19

19. Arista 3.5 times longer than first flagellomere ·............................................... P. obtususa sp. nov.

-. Arista 3 times longer than first flagellomere ·.............................................................. 20

20. Eye 1.3 times higher than long; postocellar setae converging............................ · P. lii Xi, Shen, Yang & Yin

-. Eye 1.5 times higher than long; postocellar setae cruciate ·................................................... 21

21. Gena approximately one-ninth of eye height; M 1 between r-m and dm-cu as long as dm-cu ·............ P. hirtipes sp. nov.

-. Gena approximately one-tenth of eye height; M 1 between r-m and dm-cu longer than dm-cu ·....................... · 22

22. Vibrissa located at the level of lower eye margin; calypter with yellowish microtrichae................ P. epitacta Hendel

-. Vibrissa located below the level of lower eye margin; calypter with blackish microtrichae......... P. fuscusagenis sp. nov.

23. Arista at least 3 times longer than first flagellomere; eye 1.6 times higher than long.............................. · 24

-. Arista 3 times as long as first flagellomere; eye less than 1.6 times higher than long............................... 25

24. Gena approximately one-eleventh of eye height; arista darkish brown............................. P. claviconis Yang

-. Gena approximately one-seventh of eye height; arista black................................... · P. covexusa Xi & Yin

25. M 1 between r-m and dm-cu as long as dm-cu.............................................................. 26

-. M 1 between r-m and dm-cu longer than dm-cu............................................................. 27

26. Gena narrow, approximately one-eleventh of eye height; palpus long, 5 times longer than wide.... P. angustigenis Xi & Yang

-. Gena relatively broad, approximately one-seventh of eye height; palpus long, 7 times longer than wide................................................................................................. P. euthyipalpis Xi & Yang

27. M 1 between r-m and dm-cu at least 1.5 times longer than dm-cu............................................... 28

-. M 1 between r-m and dm-cu less than 1.2 times longer than dm-cu............................................. 34

28. Vibrissa located at level of lower eye margin.............................................................. 29

-. Vibrissa located below level of lower eye margin........................................................... 32

29. Postocellar setae converging; gena approximately one-ninth of eye height...................... P. clavellata Xi & Yang

-. Postocellar setae cruciate; gena approximately one-tenth of eye height·.......................................... 30

30. Frons with 5 interfrontal setae; tibiae blackish brown ·......................... P. melanogastera Xi, Shen, Yang & Yin

-. Frons with 3 or 4 interfrontal setae; tibiae yellowish......................................................... 31

31. Frons with 4 interfrontal setae; ocellar triangle brownish ·.................................. P. flevies Xi, Yang & Yin

-. Frons with 3 interfrontal setae; ocellar triangle blackish.................................... · P. luteipalpus Malloch

32. Halter white; palpus sickle-shaped ·.................................................. P. drepanipalpis Xi & Yang

-. Halter dark brown or yellowish; palpus slightly flat and straight ·.............................................. 33

33. Gena approximately one-seventh of eye height; knob of halter yellowish ·.................. P. emeishanensis Xi & Yang

-. Gena approximately one-fifth of eye height; knob of halter with upper half white and lower half dark brown·............................................................................................ P. latustigenis Xi & Yang

34. First flagellomere irregularly quadrangular................................................................ 35

-. First flagellomere irregularly circular.................................................................... 37

35. Eye 1.4 times higher than long; ocellar triangle brown ·...................................................... 36

-. Eye 1.2 times higher than long; ocellar triangle black........................................ P. dicrana Xi & Yang

36. Gena approximately one-ninth of eye height; arista 3 times longer than first flagellomere.................................................................................................... P. brevipalpis Xi, Shen, Yang & Yin

-. Gena approximately one-fourteenth of eye height; arista 2.5 times longer than first flagellomere................................................................................................. P. squadratpalpus Xi, Yang & Yin

37. Vibrissal angle relatively acute, its tip less than 60 degree angle.............................. P. cuspigera Xi & Yang

-. Vibrissal angle flat and blunt........................................................................... 38

38. Cercus with thin ventral appendix; hind tibia brownish ·....................................... P. dilatata Malloch

-. Cercus lacking short ventral appendix; hind tibia dark brown ·................................................ 39

39. Palpus wide, 2.6 times longer than wide; knob of halter with upper half brown brownish and lower half dark brown·....................................................................................... P. planipalpis Xi & Yang

-. Palpus basally wide and apically narrowed; knob of halter with upper half yellow and under half yellowish ·............................................................................................... P. tibetensis Xi & Yang