A key to the genera of Issini (Hemiptera: Fulgoromorpha: Issidae) of China and neighbouring countries, with descriptions of a new genus and two new species Author Rui Meng Author Yinglun Wang Author Daozheng Qin text European Journal of Taxonomy 2016 181 1 25 journal article 51584 10.5852/ejt.2016.181 96267bab-f85d-409d-bb95-5065744fba53 2118-9773 269259 urn:lsid:zoobank.org:pub:BAA1A445-2005-421F-81C2-493851B1F689 Celyphoma Emeljanov, 1971 Celyphoma Emeljanov, 1971: 625 (type species: Celyphoma fruticulina Emeljanov, 1971 , by original designation). Diagnosis The genus can be recognized by the following characters: small sized; vertex distinctly wider than long; frons elongate, with median carina, upper margin arcuate or slightly concave; mesonotum with inverted V or Y-shaped carina at middle; hind wing rudimentary; hind tibia with 1–2 lateral spines; phallobase with one or two pairs of lateral processes, aedeagus with pair of ventral processes.