Drabescus
Creators: name: Wang, Jia-Jia
name: Qu, Ling
name: Xing, Ji-Chun
name: Dai, Ren-Huai
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Drabescus

description: Key to species (males) of Drabescus from China
(D. albostriatus, D. atratus, D. extensus, D. fuscorufous, D. notatus and D. piceus omitted).
1. Pygofer side without processes and with apex broadly rounded................................................. 2
- Pygofer side with processes or apex narrow and attenuate..................................................... 10
2. Aedeagal shaft with pair of processes basally................................................................ 3
- Aedeagal shaft with pair of processes medially (Figs. 1)............................................... D. peltatus
3. Aedeagal shaft with branched basal processes............................................................... 4
- Aedeagal shaft basal processes unbranched.................................................................8
4. Basal processes each with at least two branches (Figs. 2)............................................ D. jinxiuensis
- Basal processes each with one branch...................................................................... 5
5. Aedeagal shaft expanded subapically...................................................................... 6
- Aedeagal shaft not expanded subapically...................................................................7
6. Valve triangular, subgenital plate slender (Figs. 3–4).................................................. D. furcatus
- Valve arcuate, subgenital plate slightly broadened (Figs. 5–6)......................................... D. lamellatus
7. Aedeagal shaft cylindricall (Figs. 7).................................................................... D. lii
- Aedeagal shaft short spiniform (Figs. 8)............................................................ D. gracilis
8. Connective Y-shaped................................................................................... 9
- Connective U-shaped (Figs. 9–10).............................................................. D. pellucidus
9. Basal processes of aedeagal shaft with evenly curved lateral margins (Figs. 11)............................. D. piceatus
- Basal processes of aedeagal shaft with sinuate lateral margins (Figs. 12)................................. D. minipenis
10. Pygofer side with evenly curved sinuate process............................................................ 11
- Pygofer side with tapering apex or straight process.......................................................... 13
11. Aedeagal shaft with pair of basal processes, longer than shaft (Figs. 13)............................... D. formosanus
- Processes not as above................................................................................ 12
12. Aedeagal shaft in lateral view narrowed from base to apex (Figs. 14).................................... D. ineffectus
- Aedeagal shaft in lateral view with ventral margin expanded medially (Figs. 15).......................... D. henanensis
13. Aedeagus with process................................................................................ 14
- Aedeagus without process (Figs. 16)..................................................... D. cuspidatus sp. nov.
14. Aedeagus with two pairs of processes (Figs. 17)............................................... D. quadrispinosus
- Aedeagus with pair of processes......................................................................... 15
15. Aedeagus with a pair of medial processes................................................................. 16
- Aedeagus with pair of basal processes.................................................................... 17
16. Aedeagus basal processes slightly shorter than shaft (Figs. 18)......................................... D. testaceus
- Aedeagus basal processes very short (Figs. 19)................................................... D. conspicuous
17. Aedeagus basal processes extending to near apex of shaft..................................................... 18
- Aedeagus basal processes extending to midlength of shaft....................................................21
18. Aedeagal shaft with expanded distal part (Figs. 20)................................................. D. albosignus
- Aedeagal shaft with narrowed distal part.................................................................. 19
19. Aedeagal shaft compressed, with broad basal processes (Figs. 21)................................ D. nervosopunctatus
- Aedeagal shaft columnar, with slender basal processes....................................................... 20
20. Aedeagal shaft apex acute ventrally (Figs. 22)........................................... D. multidentatus sp. nov.
- Aedeagal shaft apex round ventrally (Figs. 23)..................................................... D. vilbastei
21. Pygofer side with serrate margin ventrally (Figs. 24).................................................. D. ogumae
- Pygofer side with smooth margin ventrally................................................................ 22
22. Aedeagal shaft in lateral aspect columnar and straight (Figs. 25).................................... D. shillongensis
- Aedeagal shaft in lateral aspect sinuate.................................................................... 23
23. Connective stem twice as long as arms (Figs. 26–27)........................................ D. convolutus sp. nov.
- Connective stem similar in length to arms (Figs. 28–29)................................................ D. nitobei
description: Published as part of Wang, Jia-Jia, Qu, Ling, Xing, Ji-Chun & Dai, Ren-Huai, 2016, Three new species of the leafhopper genus Drabescus Stål (Hemiptera: Cicadellidae: Deltocephalinae) from China, pp. 118-126 in Zootaxa 4132 (1) on pages 119-120, DOI: 10.11646/zootaxa.4132.1.10, http://zenodo.org/record/267392