Review of the leafhopper genus Thaia Ghauri and related genera (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) 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 712100, P. R. China & Illinois Nature History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S Oak St., Champaign, IL 61820, USA & caoyh @ illinois. edu; https: // orcid. org / 0000 - 0002 - 0515 - 0767 caoyh@illinois.edu Author Dmitriev, Dmitry A. 0000-0002-3293-4794 Illinois Nature History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S Oak St., Champaign, IL 61820, USA & arboridia @ gmail. com; https: // orcid. org / 0000 - 0002 - 3293 - 4794 arboridia@gmail.com Author Dietrich, Christopher H. 0000-0003-4005-4305 Illinois Nature History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S Oak St., Champaign, IL 61820, USA & chdietri @ illinois. edu; https: // orcid. org / 0000 - 0003 - 4005 - 4305 chdietri@illinois.edu Author Zhang, Yalin Key Laboratory of Plant Protection Resources and Pest Management, National Ministry of Education, Entomological Museum, Northwest A & F University, Yangling, Shaanxi 712100, P. R. China text Zootaxa 2020 2020-10-28 4868 3 331 367 journal article 8891 10.11646/zootaxa.4868.3.2 03a9be04-f633-4adc-8397-058c282f216b 1175-5326 4417761 256D29E7-5148-415C-AD06-5F1F6D986887 2. Etmaria brevis Cao & Dmitriev sp. nov. Figs 3 , 18 i–l Description. Ground color light tawny, dorsum infuscated (specimen preserved in ethanol before examined), eyes grey, frontoclypeal area and anteclypeus tawny. Crown fore margin parallel to hind margin, coronal suture distinct; anteclypeus relatively broad. Anal tube appendage broad, extended from apex of anal tube. Pygofer with oblique boundary between basal and distal lobes; ventral appendage tubular, curved inwards, not surpassing hind margin of lobe, without rigid setae at base. Subgenital plate with about 3 macrosetae. Style with apical part slim and long, curved outwards in dorsal view. Connective with manubrium long and relatively broad, widened apically, margin of central lobe straight. Aedeagal shaft long, curved dorso-cephalad, atrium long but narrow in lateral view, broadened in caudal view, with serrated lamellae on dorso-lateral edges near base; dorsal apodeme rudimentary; paired preatrial processes short and straight, shifted to base of shaft, near each other. Measurement. Male length 3.10 mm. FIGURE 3 . Etmaria brevis Cao & Dmitriev sp. nov. a. abdominal apodemes 2S; b. genital capsule; c. anal tube, pygofer lobe and pygofer ventral appendages, caudal view; d. anal tube appendage, lateral view; e. subgenital plate, style, connective and sternite IX; f. subgenital plate, dorsal view; g. style, dorsal view; h. connective; i. aedeagus, lateral view; j. aedeagus, caudal view. Material examined. Holotype : ♂ , THAILAND , Prachuab Khiri Khan , Khao Sam Roi Yot NP , 200m /s of Checkpoint 1, 12°12.789'N , 99°58.662‘E , 19–26 x 2008 , Malaise trap , coll. Yai & Amnad. [ QSBG ]. Etymology. The new specific epithet is derived from the Latin adjective “ brevis ” which means short, small, referring to the short preatrial processes. Diagnosis. The new species is similar to E. decembris (Dworakowska) , but the anal tube appendage is broader and curved, the pygofer ventral appendage is curved, the style has a much longer apex, and the aedeagal shaft is curved dorso-cephalad with the dorso-lateral edges serrated and lamelliform.