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 Pseudocoruncanius Meng, Qin & Wang, 2020 Pseudocoruncanius Meng, Qin &Wang, 2020 in Zhang et al . 2020: 433 . Type species: Pseudocoruncanius flavostriatus Meng, Qin & Wang, 2020 by original designation. Pseudocoruncanius Gnezdilov 2022c: 306 (diagnosed, nomenclatural remarks, key to species, one new species from Vietnam ). Diagnosis The genus Pseudocoruncanius can be differentiated from the other genera of Sarimini by the following combination of characters: (1) the wide frons, at least 1.5 times as wide as long in midlength; (2) the median carina of frons restricted to upper portion, not reaching the frontoclypeal suture; (3) the elongate tegmina, moderately tapering distally, brown to dark brown with wide white or white yellowish stripes; (4) the hind wings with CuA2 and CuP fused apically, and Pcu and A1 fused in basal half; (5) the aedeagus with a pair of long lateroventral processes arising in its apical part and directed cephalad; (6) the dorsal lobe of the periandrium with a pair of slender, elongate processes derived from distal portion and directed cephalad; (7) the female anal tube long and very narrow. Species included Pseudocoruncanius flavostriatus Meng, Qin & Wang, 2020 Pseudocoruncanius nigrifrons Gnezdilov, 2022 Pseudocoruncanius obliquus sp. nov.