Nomenclatural changes in the planthopper tribe Hemisphaeriini (Hemiptera: Fulgoromorpha: Issidae), with the description of a new genus and a new species Author Meng, Rui AB10C4C0-C7EE-42CF-BEC3-3022BCBA0B6D Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education and Entomological Museum, Northwest A & F University, Yangling, Shaanxi 712100, China. & Email: mengrui @ nwsuaf. edu. cn & urn: lsid: zoobank. org: author: AB 10 C 4 C 0 - C 7 EE- 42 CF-BEC 3 - 3022 BCBA 0 B 6 D mengrui@nwsuaf.edu.cn Author Webb, Michael Donald FAAE82E2-3C2A-4900-84FE-55CEAD630384 The Natural History Museum, Cromwell Road, Kensington, London SW 7 5 BD, London, UK. & Email: m. webb @ nhm. ac. uk & urn: lsid: zoobank. org: author: FAAE 82 E 2 - 3 C 2 A- 4900 - 84 FE- 55 CEAD 630384 m.webb@nhm.ac.uk Author Wang, Ying-Lun D9647615-E0BA-4556-87D6-7C49E651551C Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education and Entomological Museum, Northwest A & F University, Yangling, Shaanxi 712100, China. & urn: lsid: zoobank. org: author: D 9647615 - E 0 BA- 4556 - 87 D 6 - 7 C 49 E 651551 C & Corresponding autor: yinglunw @ nwsuaf. edu. cn yinglunw@nwsuaf.edu.cn text European Journal of Taxonomy 2017 2017-03-14 298 1 25 journal article 22167 10.5852/ejt.2017.298 c45a1d5b-c86b-4e74-a749-bab03c748788 2118-9773 3825759 Key to genera of Hemisphaeriini 1. Tegmen with claval suture …………………………………………………………………………2 – Tegmen without claval suture ………………………………………………………………………4 2. Tegmen with claval suture distinct in basal ¼ of wing; metope with median carina rudimentary in its apical part (Genezdilov 2015 : figs 1–3) …………………… Bruneastrum Gnezdilov, 2015 – Tegmen with claval suture well-developed; metope with complete median carina or median carina absent ………………………………………………………………………………………3 3. Metope elongate, with median carina, without tubercules ( Chen et al. 2014 : figs 2-35, 2-36) …………………………………………………… Neohemisphaerius Chen, Zhang & Chang, 2014 – Metope almost as wide as long in middle line, without median carina, with a row of tubercules along lateral margin ( Chen et al. 2014 : fig. 2-33) ………… Paramongoliana Chen, Zhang & Chang, 2014 4. Metope with large bulge at center (Genezdilov 2013 b: figs 2–4) … Bolbosphaerius Gnezdilov, 2013 – Metope flat or slightly elevated in median area, without such bulge ( Figs 1B, D , F–G, J, L, 2C, 8B, 9D, 10H)…………………………………………………………………………………………………5 5. Tegmen depressed at base, costal margin moderately convex at basal one third as “relief shoulder” ( Figs 1A, C , 7A ) ……………………………………………………………………………………6 – Tegmen not as above ( Figs 1E , H–I, K, 8A, 9A, 10A) ……………………………………………8 6. Coryphe almost as wide as long, anteclypeus angularly rounded ( Fig. 6 A–B) … Gergithus Stål, 1870 – Coryphe distinctly longer than wide, anteclypeus flat ( Fig. 1 A–D) ………………………………7 7. Pronotum with median carina; anterior margin not foliate and elevated ( Fig. 1C ). Metatibiotarsal formula 6–8–2 …………………………… Neogergithoides Sun, Meng & Wang, 2012 – Pronotum without median carina; anterior margin foliate and elevated ( Fig. 1A ). Metatibiotarsal formula 6–10–2 …………………………………………………… Macrodaruma Fennah, 1978 8. Coryphe elongate, more or less triangular ( Fig. 1E ) … Choutagus Zhang, Wang & Che, 2006 – Coryphe broad, quadrangular ( Figs 1 H–I, K, 8A, 9A, 10A) …………………………………………9 9. Tegmen distinctly widened at basal costal margin ( Figs 8B , 10A ) ………………………………10 – Tegmen not widened at basal costal margin …………………………………………………11 10. Coryphe 4.5 times as wide as long; metope very broad below eyes ( Fig. 10A, D ) …………… …………………………………………………………………… Hemisphaeroides Melichar, 1903 – Coryphe 1.5 times as wide as long; metope not very broad below eyes ( Fig. 8 A–B) ……… …………………………………………………………………………… Mongoliana Distant, 1906 11. Metope with lateral margin almost right-angled at mid-length ……………………………………12 – Metope with lateral margin not right-angled at mid-length ………………………………………13 12. Mesonotum elevated, length in midline almost equal to combined length of coryphe and pronotum; tegmen distinctly long, oblong ( Melichar 1906 : fig. 15) …… Hysteropterissus Melichar, 1906 – Mesonotum flat, twice combined length of coryphe and pronotum in mid line; tegmen relatively wide, nearly rhomboidal ( Fig. 1K ) …………………… Rotundiforma Meng, Wang & Qin, 2013 13. Clypeus with median carina ( Melichar 1906 : fig. 16) …………… Hysterosphaerius Melichar, 1906 – Clypeus without median carina ……………………………………………………………………14 14. Fore and mid femora dilated ( Melichar 1906 : fig. 14) …………………… Hemiphile Metcalf, 1952 – Fore and mid femora not dilated ……………………………………………………………………15 15. Metope with a row of tubercles and median carina ( Fig. 1G ) ……… Gergithoides Schumacher, 1915 – Metope without tubercles and median carina ( Figs 1J , 9 C–D) ……………………………………16 16. Hind wing well-developed, longer than half length of tegmen ………… Gnezdilovius gen. nov. – Hind wing shorter than half length of tegmen …………………………………………………17 17. Aedeagus with two processes, suspensorium indistinct …………………………………………18 – Aedeagus without process, suspensorium distinct ………………… Hemisphaerius Schaum, 1850 18. Pygofer in profile with hind margin distinctly angulated; phallobase asymmetrical at apex ( Chan & Yang 1994 : figs 27–30) ………………………………… Euhemisphaerius Chan & Yang, 1994 – Pygofer not distinctly angulated; phallobase symmetrical ( Chan & Yang 1994 : fig. 26) ………… …………………………………………………………… Epyhemisphaerius Chan & Yang, 1994