Taxonomic study of some Afrotropical erythroneurine leafhoppers (Hemiptera: Cicadellidae: Typhlocybinae) Author Cao, Yanghui 0000-0002-0515-0767 Key Laboratory of Plant Protection Resources and Pest Management, National Ministry of Education, Entomological Museum, Northwest A & F University, Yangling, Shaanxi, CN- 712100, P. R. China & caoyh @ illinois. edu; https: // orcid. org / 0000 - 0002 - 0515 - 0767 & Illinois Nature History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S Oak St., Champaign, IL, US- 61820, USA caoyh@illinois.edu Author Dietrich, Christopher H. Illinois Nature History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S Oak St., Champaign, IL, US- 61820, USA & chdietri @ illinois. edu Author Dmitriev, Dmitry A. Illinois Nature History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S Oak St., Champaign, IL, US- 61820, USA & arboridia @ gmail. com Author Zhang, Yalin 0000-0002-1204-9181 Key Laboratory of Plant Protection Resources and Pest Management, National Ministry of Education, Entomological Museum, Northwest A & F University, Yangling, Shaanxi, CN- 712100, P. R. China & yalinzh @ nwsuaf. edu. cn; https: // orcid. org / 0000 - 0002 - 1204 - 9181 yalinzh@nwsuaf.edu.cn text Zootaxa 2020 2020-10-13 4860 3 301 351 journal article 8287 10.11646/zootaxa.4860.3.1 03cdf81b-341b-41ab-bce4-ad99c6d84c4f 1175-5326 4413867 AF0A05FA-F0B4-4D6D-82D9-2E77F92C789C 3. Imbecilla spinalis Cao & Dmitriev sp. nov. ( Figs 11 , 25 u–x) Description. Ground color yellowish-brown (specimens preserved in ethanol before examination). Anterior part of vertex, frontoclypeal area and anteclypeus black, lorum and gena dark brown, eyes grey. Pronotum with midline and hind margin infuscated. Mesonotum with basal triangles light, midline infuscated. Forewing dark with brochosome field dark. Head wider than pronotum. ( Figs 25 u–x) Male abdominal apodemes 2S ( Fig. 11c ) extended to middle of sternite IV. Pygofer lobe ( Fig. 11d ) with dorsal margin angulately emarginate, hind margin truncate; dorsal appendage ( Figs 11d, e ) nearly triangular, directed ventrad. Subgenital plate ( Figs 11d, g ) with long, spine-like process subapically, directing inwards, with about 2 macrosetae and reduced marginal rigid setae. Style ( Fig. 11h ) with second extension moderately long, without setae but sensory pits on preapical lobe. Connective ( Fig. 11i ) with manubrium narrow, central lobe convex on apical margin. Aedeagal shaft ( Figs 11j, k ) slender, slightly sinuated, with pair of thin processes basally, as long as shaft, apex serrated; without preatrial processes; gonopore terminal on ventral side. Measurement. Male length 2.35–2.50mm . Material examined. Holotype : ♂ , REPUBLIC OF CONGO , Dept. Pool, Iboubikro site, Lesio-Loun Pk , 340m , 03°16.196'S , 015°28.267'E , 29.viii.2008 , coll. Braet & Sharkey. Paratypes : 1♂ , same data as holotype ; 3♂ , same data except 25.viii.2008 ; 1♂ , same data except 12–18.viii.2008 . Etymology. The specific epithet is derived from Latin adjective “ spinalis ” which means spined, referring to the spine-like process of the subgenital plate. Diagnosis. This species is unique within the genus in having a spine-like process on the subgenital plate. It lacks the preatrial processes, but has a pair of long basal processes on the aedeagus.