A taxonomic study of Psyllaephagus Ashmead (Hymenoptera, Encyrtidae) from China Author Zou, Boyu https://orcid.org/0009-0000-5022-8669 College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830017, China & Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Hu, Hongying https://orcid.org/0000-0002-2295-1072 College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830017, China Author Zhang, Lanwei https://orcid.org/0000-0002-7829-8770 College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830017, China & Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Zhang, Yanzhou https://orcid.org/0000-0002-9713-5352 College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830017, China & Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China zhangyz@ioz.ac.cn text ZooKeys 2023 2023-11-23 1184 327 359 http://dx.doi.org/10.3897/zookeys.1184.109476 journal article http://dx.doi.org/10.3897/zookeys.1184.109476 1313-2970-1184-327 3FFAF34C1BC14DA7A4C3DFDC1A4DE08B A7F0913735185600957928673AC72070 Psyllaephagus densiciliatus Tan & Zhao, 1999 Fig. 5 Psyllaephagus densiciliatus Tan & Zhao, 1999: 174-175. Holotype ♀, China, Yunnan (CNEP), photos of holotype examined. Material examined. China - Hainan • 2♀ , Nada , 1.May.1964 , leg. DX Liao ; 3♀♀ , 1♂ , Wuzhishan , 21.Jun.1999 , leg. CD Zhu ; Yunnan • 2♀♀ , Mengla , 23. July. 2004, leg. YZ Zhang ; Guangxi • 3♀♀ , Fangcheng , 18. July. 2009, leg. YZ Zhang. Diagnosis. Female. Body length ~ 2.2 mm; legs yellow, but mid and hind coxae dark brown (Fig. 5E, F ); antenna with all funicular segments longer than broad, F6 sometimes subquadrate (Fig. 5A ); ovipositor slightly exserted; OL ~ 1.2 x MT. Figure 5. Psyllaephagus densiciliatus ♀ A antenna B fore wing C scutellum D fore leg E mid leg F hind leg G ovipositor. Description. Female. Body length ~ 2.2 mm, metallic green; frontovertex and face with green-violet sheen. Antenna scape and pedicel dark brown, funicular segments brown but F6 yellow; mesoscutum with a coppery sheen; axilla and scutellum with blue sheen; basal 1/2 of tegula yellow, apex dark brown; mesopleuron metallic green mixed with golden sheen; legs yellow, but mid and hind coxae dark brown; basal 1/4 of metasoma with a metallic green sheen, remainder coppery; wings hyaline, venation brown. Head ~ 3.0 x as wide as frontovertex; head with reticulate sculpture; ocelli forming angle of ~ 90°; OCL ~ 1.7 x diameter of posterior ocellus; OOL ~0.6 x diameter of posterior ocellus; POL ~ 3.8 x diameter of posterior ocellus; mandible with one tooth and a broad truncation; antenna with scape ~ 4.9 x as long as wide; pedicel ~ 2.0 x as long as wide; all funicular segments longer than wide; clava 3-segmented, 2.5 x as long as wide, slightly shorter than F4-F6 combined. Relative measurements: HW 32; HL 14; FV 9.7; OOL 0.8; POL 7.2; OCL 2.4; SW 3.1; SL 14. Mesosoma . Dorsum distinctly convex; MSW ~ 1.5 x MSL; scutellum ~ 1.1 x as long as wide; mesoscutum dorsally with reticulate sculpture similar to that on frontovertex; sculpture on scutellum similar to that on mesoscutum but clearly deeper; fore wings ~ 2.2 x as long as wide; marginal vein quadrate; postmarginal vein short, ~ 1.3 x as long as wide; stigmal vein 4.9-as long as wide, STV ~ 3.3 x PMV; mid tibial spur 0.7 x as long as basitarsus. Relative measurements: FWL 74; FWW 33. Metasoma slightly longer than mesosoma; cercal plates located in posterior 3/5 of metasoma; hypopygium reaching ~3/4 of metasoma; ovipositor slightly exserted; OL ~ 6.1 x GL, and 1.2 x MT. Male. Body length ~ 1.1 mm, generally similar to female, but mesoscutum with coppery sheen; ocelli forming an obtuse-angled triangle; clava unsegmented. Variation. A little variation was found in coloration of the scape: the scape is not always totally dark brown, sometimes the base is yellow (Fig. 5A ). Host. Unknown. Distribution. China (Guangxi, Hainan, Yunnan).