Three new species of the leafhopper genus Drabescus Stål (Hemiptera: Cicadellidae: Deltocephalinae) from China Author Wang, Jia-Jia Author Qu, Ling Author Xing, Ji-Chun Author Dai, Ren-Huai text Zootaxa 2016 4132 1 118 126 journal article 38695 10.11646/zootaxa.4132.1.10 aabfc626-a984-4cfb-b2c5-d99510212587 1175-5326 267392 B5DFD7CB-9A45-4FED-94D8-C5547E7C21B9 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