Sixteen issid planthopper species in one day in Dong Son-Ky Thuong Nature Reserve in North Vietnam: Eight new species, one new genus and additional new records (Hemiptera: Fulgoromorpha: Issidae) Author Constant, Jérôme 6E6072A1-9415-4C8D-8E60-2504444DB290 Royal Belgian Institute of Natural Sciences, O. D. Phylogeny and Taxonomy, Entomology, Vautier street 29, B- 1000 Brussels, Belgium. jerome.constant@naturalsciences.be Author Pham, Hong Thai E34CB863-7E3B-4E8F-8738-B41C07D9F5F9 Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Hanoi, Vietnam. & Graduate School of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam. jerome.constant@naturalsciences.be text European Journal of Taxonomy 2024 2024-01-24 919 1 1 87 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2407/10617 journal article 10.5852/ejt.2024.919.2407 2118-9773 10559520 72B7907F-F901-4DDD-B2DD-63D03253837E Genus Pusulissus Bourgoin & Wang, 2020 Pusulissus Bourgoin & Wang, 2020: 73 . Type species: P. phiaoacensis Bourgoin & Wang, 2020 , by original designation. Flatiforma Meng, Qin & Wang, 2020 in Zhang et al. 2020: 353 . Type species: F. guizhouensis Meng, Qin & Wang, 2020 , by original designation. Synonymized by Gnezdilov (2022a: 47) . Diagnosis The genus Pusulissus can be differentiated from all other genera of Parahiraciina by the following combination of characters: (1) the elongate frons (at least 1.2 times as long in midline as wide) with median carina extending from dorsal margin almost to frontoclypeal suture and without a black tubercle in the middle of the disc; (2) the tegmina distinctly widest in the basal ⅓, not subparallel nor regularly rounded; (3) the vertex with anterior margin in dorsal view only very slightly angularly convex or straight; (4) the anal tube of male dorsoventrally flattened and wide at midlength; (5) the aedeagus rather simple, with a single pair of ventral processes curved anterodorsad. Note The genus was described by Bourgoin & Wang (2020) to include two new species from North Vietnam ( Cao Bang Province ) and southern China ( Guangxi Province ), respectively. By synonymizing the genus Flatiforma Meng, Qin & Wang, 2020 under Pusulissus , Gnezdilov (2022a) transferred three additional species from China into the genus. Species included Pusulissus coronomensis Bourgoin & Wang, 2020 Pusulissus guizhouensis (Meng, Qin & Wang, 2020) Pusulissus menglaensis (Che, Zhang & Wang, 2020 ) Pusulissus phiaoacensis Bourgoin & Wang, 2020 Pusulissus quangninhensis sp. nov. Pusulissus ruiliensis (Che, Zhang & Wang, 2020 )