Apotropina

Liu, Xiaoyan & Yang, Ding, 2015, Three new species of genus Apotropina Hendel from China (Diptera, Chloropidae), Zootaxa 3947 (1), pp. 122-130 : 123

Key to species of Apotropina from the Oriental Region

1. Wing with black or deeply brownish spot near tip.................................... .. A. dimorpha (Osten Sacken)

- Wing not spotted, often tinged brownish on mid-anterior area................................................... 2

2. Gena narrow, 0.2–0.3 times as wide as first flagellomere....................................................... 3

- Gena wide, 0.5 times as wide as first flagellomere............................................................ 6

3. Ocellar triangle wholly grayish white microtomentose and subshining............................................4

- Ocellar triangle almost entirely bare and distinctly shining..................................................... 5

4. Antenna blackish brown except for first flagellomere with a red spot on inside near base....... A. obscuripennis de Meijere

- Antenna predominately yellow.......................................................... A. meijerei Sabrosky

5. Tibiae brownish black except for bases brownish yellow to yellow; tarsi brownish black................................................................................................... A. nagatomii Yang, Yang & Kanmiya

- Fore and mid tibiae entirely yellow, hind tibia brown except for base and apex brownish yellow to yellow; tarsi yellow, with apical portions brownish to brown........................................... A. sinensis Yang, Yang & Kanmiya

6. Ocellar triangle extending almost to anterior margin of frons................................ A. obscuripes (Brunetti)

- Ocellar triangle usually reaching middle of frons............................................................. 7

7. Antenna blackish brown; arista bare..................................................... A. coenosioides (Frey)

- Antenna predominately yellow or brownish yellow; arista pubescent (if rarely bare, metatarsi dilated)...................8

8. Arista long and bare; metatarsi slightly dilated............................................ .. A. fulvitarsis (Walker)

- Arista normal in size, distinctly pubescent; metatarsi normally developed.........................................9

9. Scutum brown with black longitudinal stripes.............................................................. 10

- Scutum entirely black................................................................................. 11

10. Scutum yellowish brown with 2 brown longitudinal stripes, which extend to scutoscutellar suture; postgonite with a small inci- sion on ventral 1/3 of distal end............................................................. A. bistriata sp. n.

- Scutum brown with 3 black longitudinal stripes, which are fused with each other entirely on anterior 4/5 of scutum; postgonite with a small incision at middle of distal end.................................................... A. tristriata sp. n.

11. Femora and tibiae entirely yellow........................................................................12

- Femora and tibiae not entirely yellow, with brown in varying degrees........................................... 13

12. Ocellar triangle brown with yellow apex; proboscis black; scutum with 2 dorsocentral setae....... A. fuscipleuris (Becker)

- Ocellar triangle entirely reddish brown; proboscis reddish yellow to brown; scutum with 4 dorsocentral setae........................................................................................... A. brunnipennis (de Meijere)

13. R4+5 and M1+2 distinctly convergent distally................................................ A. longiprocessa sp. n.

- R4+5 and M1+2 slightly divergent distally................................................................... 14

14. Ocellar triangle shining; mid tibia with a long apical spur...................... ... A. uniformis Yang, Yang & Kanmiya

- Ocellar triangle densely and almost wholly grey tomentose; mid tibia with a short apical spur........ A. tomentosa Cherian