Maculergithus, a new subgenus in Gergithus Schumacher, 1915 with two new species from northern Vietnam (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. & urn: lsid: zoobank. org: author: 6 E 6072 A 1 - 9415 - 4 C 8 D- 8 E 60 - 2504444 DB 290 & Corresponding author: jerome. constant @ naturalsciences. be jerome.constant@naturalsciences.be Author Pham, Hong-Thai E34CB863-7E3B-4E8F-8738-B41C07D9F5F9 Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Hanoi, Vietnam. & Email: phamthai @ vnmn. vast. vn & urn: lsid: zoobank. org: author: E 34 CB 863 - 7 E 3 B- 4 E 8 F- 8738 - B 41 C 07 D 9 F 5 F 9 phamthai@vnmn.vast.vn text European Journal of Taxonomy 2016 2016-05-19 198 1 16 journal article 21959 10.5852/ejt.2016.198 66bc6169-67f1-46ca-ba7d-08326ec09cf3 2118-9773 3838140 36CCEA4B-B02D-4773-A7A0-687F305CBA8F Gergithus (Maculergithus) multipunctatus Che, Zhang & Wang, 2007 Figs 1 , 2 C–D Gergithus multipunctatus Che et al. 2007: 621 [described], figs 42–50 [head, thorax, tegmen, hind wing and male genitalia illustrated]. Gergithus multipunctatus – Meng & Wang 2012: 4 [keyed], 8 [compared with G. nonopunctatus Meng & Wang, 2012 ] — Chen et al. 2014: 4 [listed from China ], 190 [distribution, material examined – see note infra ]. non Gergithus multipunctatus – Chen et al. 2014 : (erroneous: based on wrong identification of an undescribed species) 50 [keyed], 55 [described], 56 [habitus, details and male genitalia illustrated], 190 [material examined (see note infra )] — Guo & Chen 2015 : (erroneous: based on wrong identification of an undescribed species) 430 [material examined], 431 [colour and ratios], 432–433 [male genitalia], figs 9–10, 17, 23, 29, 35 [habitus, frons and male genitalia illustrated]. Note The illustrations of the species by Chen et al. (2014) and Guo & Chen (2015) show strong discrepancies when comparing with the original description and accompanying illustrations provided by Che et al. (2007) . The specimen illustrated in the two first papers shows a yellow vertex (instead of brown) and frons without yellow spot near dorsal margin. The illustrations of the male genitalia, despite their poor quality in the two first works, also show strong differences, especially obvious in the shape of the ventrolateral lobe of the phallobase which is much larger in Che et al. (2007) . The list of material examined by Chen et al. (2014) mentions only one male available for genitalia examination. It originates from Hainan , Wuzhishan, rather far from Jianfeng Mountain, the only surely recorded location for G. (Maculergithus) multipunctatus to date. The concept of G. (Maculergithus) multipunctatus in Chen et al. (2014) and Guo & Chen (2015) should not be taken as indicative of the species. Diagnosis The species can be recognized by the following combination of characters: (1) frons with a round yellow spot below dorsal margin, not reaching the latter; (2) vertex brown; (3) 4 yellow spots on tegmina along sutural margin; (4) tegmina with 10 yellow spots in total. Identification can be confirmed by the male genitalia characters illustrated in Che et al. (2007 : figs 46– 49). Distribution Known from China , Hainan : Jianfeng Mountain ( Che et al. 2007 ) (see map Fig. 1 ). Remark The mention of the species in Hainan : Wuzhishan by Chen et al. (2014) is based on the misidentification of a yet undescribed species and hence erroneous.