A taxonomic study of Cheiloneurus Westwood (Hymenoptera, Encyrtidae) from China Author Wang, Haiyang https://orcid.org/0009-0007-5665-2111 College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin, 300392, China Author Cui, Wenyu https://orcid.org/0009-0003-2930-9028 College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin, 300392, China Author Xi, Chunxiang College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin, 300392, China Author Cao, Xinyu College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin, 300392, China Author Li, Weiqiong College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin, 300392, China Author Zu, Guohao https://orcid.org/0000-0002-9892-2171 College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin, 300392, China text ZooKeys 2024 2024-04-24 1198 143 172 http://dx.doi.org/10.3897/zookeys.1198.118944 journal article http://dx.doi.org/10.3897/zookeys.1198.118944 1313-2970-1198-143 165FDADCB6D64C89BE962698FA88806E EE9F2DD69215598DBC4A5EFEA3AEB465 Cheiloneurus quercus Mayr, 1876 Figs 90-92 , 107-113 Cheiloneurus quercus Mayr 1876 : 744, 746, Austria, not examined. Cheiloneurus tenuicornis Ishii 1928 : 147-148. Lectotype ♀, NIES, Japan. Synonymized with C. quercus by Trjapitzin (1989 : 305). Cheiloneurus quercus Japoshvili et al. 2016 : 368. Material examined. China - Henan • 1♀ ; Gongyi , Luzhuang ; 34°37'1"N , 112°52'18"E ; 213 m elev.; 07 May 2016 ; Guo-Hao Zu , Nai-Zhi Li , Jian-Wei Zu leg.; by yellow pan trapping; TJAU-HN-CHE-006 - Tianjin • 1♀ ; Jixian , Baxian Mountain National Nature Reserve ; 40°11'58"N , 117°33'52"E ; 1052 m elev.; 01 Oct. 2023 ; Ke-Long Jiao leg.; by sweep netting; TJAU-TJ-CHE-025 . Diagnosis. Female . Length, excluding ovipositor, 1.71-2.0 mm; antennal scape brown, apex white, dorsal margin of pedicel brown, ventral margin of pedicel and all funiculars white, clava dark; mandible with one tooth and a broadly truncate upper tooth; legs pale; all femora apically light brown; basal half of all tibia light brown; metasoma forming a long triangle, slightly shorter and narrower than mesosoma; ovipositor slightly exserted. Figures 105, 106. Cheiloneurus nankingensis ♂ 105 antenna 106 fore wing. Scale bars: 100 μm . Figures 107-113. Cheiloneurus quercus ♀ 107 head 108 antenna 109 mesosoma 110 fore wing 111 hind wing 112 metasoma 113 legs. Scale bars: 100 μm . Description. See Ma (2004) . Host. Coccidae : Eulecanium sp., Pulvinaria vitis , Kermesidae : Kermes miyasakii , Kermes nakagawae , Kermes quercus , Kermococcus sp., Kermococcus miyasakii , Kermococcus nakagawae , Pseudococcidae : Coccura ussuriensis , Phenacoccus polyphagus ( Noyes 2019 ). Distribution. China (Liaoning, Tianjin, Henan, Shaanxi, Shandong), Austria, Czech Republic, Hungary, Italy, Japan, Russia, Turkey.