Oncopsis

Yang, Liyuan & Zhang, Yalin, 2015, Review of the leafhopper genus Oncopsis Burmeister (Hemiptera: Cicadellidae: Macropsinae) in China with descriptions of two new species, Zootaxa 3936 (3), pp. 421-428 : 421-422

Key to species of the genus Oncopsis from China (males)

1. Face as wide as long, tegmina with 2 anteapical cells (subgenus Parasitades)................................ O. fusca

- Face narrower than long, tegmina with 3 anteapical cells (subgenus Oncopsis )..................................... 2

2. Dorsal connective without bifurcated processes.............................................................. 3

- Dorsal connective with bifurcated processes................................................................ 5

3. Processes of dorsal connective short and slender................................................... O. aurantiaca

- Processes of dorsal connective long and wide............................................................... 4

4. Processes of dorsal connective with serrated ventral margin......................................... O. cuneiforma

- Processes of dorsal connective without serrated ventral margin........................................ O. flavovirens

5. Dorsal connective processes with a short and degraded shaft................................................... 6

- Dorsal connective processes with a long and obvious shaft.................................................... 12

6. Branches of dorsal connective processes not obviously separated........................................ O. testacea

- Branches of dorsal connective processes clearly separated..................................................... 7

7. Upper branch of dorsal connective process shorter than other one................................................ 8

- Upper branch of dorsal connective process longer than other one............................................... 10

8. One dorsal connective branch reduced, without serrated inner margin................................. O. odontoidea

- Both branches slender, with serrated inner margin............................................................ 9

9. Aedeagus shaft tapering from base to apex in ventral view, apex blunt................................... O. melichari

- Aedeagus shaft with parallel margins in ventral view, apex with distinct dent......................... O. kangdingensis

10. S-shaped dorsal connective separated from the upper process branch..................................... O. fumosa

- S-shaped dorsal connective crossed from the upper process branch.............................................. 11

11. Dorsal connective large, both branches long, basally slender........................................... O. kuluensis

- Dorsal connective relatively small, both branches short, basally wide....................................... O. tristis

12. Branches of dorsal connective processes relatively short...................................................... 13

- Branches of dorsal connective processes long.............................................................. 14

13. Face largely black, remaining area light yellowish................................................. O. nigrofaciala

- Face yellow, with wide black transverse band, clypellus black......................................... O. serrulota

14. Upper branch clearly shorter than lower one, tip sharpened............................................ O. obstructa

- Upper branch longer than lower one, tip blunt.............................................................. 15

15. Both branches of dorsal connective with serrated inner margin................................................. 16

- One or neither branch with serrated inner margin............................................................ 19

16. Body black, style with blunt end........................................................... O. latusoid sp. nov.

- Body brown, style with normal end...................................................................... 17

17. Black transverse band between eyes not concave, frontoclypeus brown............................... O. nigrofaciatus

- Black transverse band between eyes concave at lower margin, frontoclypeus black................................. 18

18. Style tip without additional spine, connective of usual width........................................... O. convexus

- Style tip sharpened with additional spine, connective moderately slender.................................. O. spinosa

19. Both branches without serrated inner margin............................................................... 20

- One branch with serrated inner margin.................................................................... 21

20. Median aedeagal shaft not inflated.............................................................. O. anchorous

- Median aedeagal shaft slightly inflated............................................................... O. furca

21. Upper branch of dorsal connective with serrated outer margin, tips sharpened..................... O. taibaiensis sp. nov.

- Upper branch without serrated outer margin, tips blunt................................................... O. alni