A new Brazilian species of Segonalia Young 1977 (Hemiptera, Cicadellidae, Cicadellini) and key to species Author Alasmar, Luísa 0000-0001-8210-1080 Laboratório de Taxonomia de Auchenorryncha, Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81530 - 980, Curitiba, PR, Brazil lualasmar@gmail.com Author Cavichioli, Rodney Ramiro Laboratório de Taxonomia de Auchenorryncha, Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81530 - 980, Curitiba, PR, Brazil text Zootaxa 2023 2023-11-17 5374 3 445 450 https://www.mapress.com/zt/article/download/zootaxa.5374.3.9/52300 journal article 10.11646/zootaxa.5374.3.9 1175-5326 C84CB5F8-C75A-462D-8550-ED70437B1BBA Key to males of Segonalia 1. Color of body yellow, forewings with green coriaceous clavus and membranous corium, with a dark rounded macula at transition from crown to face.................................................................. S. domahovskii sp. nov. - Color of body black with ivory bands and maculae........................................................... 2 2. Body length 5.4 mm or more, apex of pygofer in lateral view with distinct acute process; aedeagus basis projected ventrally, flanges distinct, arising basally....................................................... S. steinbachi Young, 1977 - Body length less than 5.4 mm, apex of pygofer in lateral view sharply angulate but without process; aedeagus basiventral margin rounded, flanges slightly distinct, restricted to median third............... S. machadoi Cavichioli & Takyia, 2016