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 Gergithus Stål, 1870 Figs 1–7 Gergithus Stål, 1870: 756 . Type species: Hemispharius schaumi Stål, 1855 , by original designation. Diagnosis Coryphe subquadrate ( Figs 2A , 5A, D , 6A ), metope elongate ( Figs 2C , 5B, F , 6D , 7C ), postclypeus nearly triangular and in same oblique plane with metope, anteclypeus angular ( Figs 2D , 5C, E , 6B , 7B ) and tegmen with costal margin moderately convex at basal one third as “relief shoulder” ( Figs 2A , 5A , 6A , 7A ). Redescription Coryphe subquadrate, margins carinate, anterior margin straight or weakly concave, posterior margin weakly concave ( Figs 2A , 5A, D , 6C , 7A ). Metope greatly elongate, slightly widening below antennae; upper margin straight ( Figs 2C , 5B, F , 6D , 7C ). Metopoclypeal suture straight ( Figs 2C , 5B, F , 6D , 7C ). Postclypeus nearly triangular and in same oblique plane, with lateral margins continuous with those of metope; anteclypeus extremely narrow in ventral view, and roundly angulately protruding ventrally in lateral view ( Figs 2 C–D, 5B–C, E–F, 6B, D, 7B–C). Ocelli rudimentary. Pronotum clearly short, as long as coryphe in middle line or slightly shorter than it, extremely narrow behind eyes, margins obviously ridged; lateral lobes large, fan-shaped in frontal view, ventral margins moderately oblique, lateroventral angles obtusely convex ( Figs 2A, C , 5 A–B, D, F, 6C–D, 7A, C). Mesonotum with anterior margin obviously ridged and shallowly concave, with two rounded pits medially on each side ( Figs 2A , 5A, D , 6C , 7A ). Tegula small. Tegmen ovate-oblong, depressed at basal surface, costal margin moderately convex at basal one third as “relief shoulder”, longitudinal veins prominent, with many supernumerary branches and numerous irregular transverse veinlets; claval suture absent ( Figs 2F , 5 C–D, 6E, 7B). Hind wing mostly well-developed single lobe, veins netlike, sometimes reduced ( Fig. 2G ). Legs moderately long, not dilated; hind tibia with two spines distally. Distribution Sri Lanka , India , Burma , Thailand , China ( Yunnan Province ), Malaysia , Indonesia . Remarks From a total of 62 species previously included in the genus we transfer several species to a new genus described below and transfer G. contusus ( Walker, 1851 ) to Mongaliana . However, a detailed revision of the latter genus is needed in the future. Twenty two species are retained in Gergithus , most of them after examination of the type ( Butler 1875 ; Distant, 1906 , 1916 ; Walker 1851 ) or of other specimens in the BMNH. Images of type specimens are provided for: G. schaumi ( Stål, 1855 ) ( Fig. 7 A–D), G . cribratus Melichar, 1906 ( Fig. 5 D–F) and G. signatifrons Melichar, 1906 ( Fig. 6 A–F). The species G. ignotus Melichar, 1906 , G. lineolatus Melichar, 1906 , G. pigrans Melichar, 1906 , G. secundus ( Melichar, 1903 ) and G. vidulus Melichar, 1906 are known by their original descriptions only. Checklist of species of Gergithus Stål, 1870 Species in BMNH indicated by *: * G. bipustulatus ( Walker, 1858 ) . As Hemisphaerius bipustulatus Walker, 1858: 95 , Sri Lanka * G. complicatus Distant, 1916 . Distant 1916 : 103 , fig. 77, Sri Lanka * G. conspicularis Distant, 1916 . Distant 1913 : 103 , Sri Lanka * G. cribratus Melichar, 1906 . Melichar 1906 : 64 , Sri Lanka ( Fig. 5 D–F) * G. dubius ( Butler, 1875 ) . As Hemisphaerius dubius Butler, 1875: 97 , pl. IV, fig. 17, Sri Lanka * G. elongates ( Distant, 1906 ) . As Hemisphaerius elongatus Distant, 1906: 362 , India * G. erebus Distant, 1916 . Distant 1916 : 101 , fig. 76, India G. frontilongus sp. nov. , China ( Yunnan ) ( Figs 2–4 ) * G. herbaceous ( Kirby, 1891 ) . As Hemisphaerius herbaceous Kirby, 1891: 147 , Sri Lanka G. ignotus Melichar, 1906 . Melichar 1906 : 66 , Burma G. lineolatus Melichar, 1906 . Melichar 1906 : 60 , Sumatra * G. niger ( Walker, 1857 ) . As Hemisphaerius niger Walker, 1857: 155 , Indonesia , Malaysia , Thailand As Hemisphaerius walkeri Butler, 1875: 100 , replacement name for Hemisphaerius chilocoroides Walker, 1862: 308 . Synomized by Liang ( 2001 ) * G. nilgiriensis ( Distant, 1906 ) As Hemisphaerius nilgiriensis Distant, 1906: 361 , India G. pigrans Melichar, 1906 . Distant 1906 : 64 , Indonesia (Kei Island) * G. proteus Distant, 1916 . Distant 1916: 102 , India * G. reticulatus ( Distant, 1906 ) . As Hemisphaerius reticulatus Distant, 1906: 361 , India * G. schaumi ( Stål, 1855 ) . As Hemisphaerius schaumi Stål,1855: 191 , Sri Lanka ( Fig. 7 A–D) G. secundus ( Melichar, 1903 ) . As Hemisphaerius secundus Melichar, 1903: 75 , Sri Lanka G. signatifrons Melichar, 1906 . Melichar 1906: 60 , Indonesia ( Sumatra ) ( Fig. 6 A–F) * G. venosus ( Distant, 1906 ) . As Hemisphaerius venosus Distant, 1906: 363 , India * G. versicolor Distant, 1916 . Distant 1916: 102 , Sri Lanka G. vidulus Melichar, 1906 . Melichar 1906: 62 , India