A taxonomic study of Muscidifurax Girault & Sanders from China (Hymenoptera, Chalcidoidea, Pteromalidae) Author Xiao, Hui Author Zhou, Shi-yu Author Tong, Yan-feng text ZooKeys 2018 776 91 103 http://dx.doi.org/10.3897/zookeys.776.25030 journal article http://dx.doi.org/10.3897/zookeys.776.25030 1313-2970-776-91 A0B96D8A85F74594B7A4110D215949B0 Muscidifurax similadanacus Xiao & Zhou sp. n. Figs 1-7 Diagnosis. Fore wing without marginal fringe; each funicular segment longer than broad; head width 1.25 x head height; Fu1 slightly longer than Fu2; Fu1 without sensilla; median area of propodeum with distinct costula; gaster 2.1 x as long as broad, Gt1 1/4 length of gaster. Description. Holotype. Female. 3.4 mm (Fig. 1). Head and mesosoma dark green, with metallic reflections and white hairs; gaster brown with yellow spot. Antennal scape brown, flagellum dark brown; legs yellow except coxae concolorous with body, femora and pretarsi brown; fore wings hyaline, venation brown except marginal vein dark brown. Figures 1-7. Muscidifurax similadanacus sp. n., 1-6 female holotype 1 Body in dorsal view 2 Head in frontal view 3 Head in lateral view 4 Head in dorsal view 5 Propodeum 6 Fore wing 7 Male, Body in lateral view. Head in frontal view 1.25 x as wide as high (Fig. 2); eyes with inner margins parallel, eye height 0.6 x head height, eyes separated by 1.5 x their height; antennal scrobes deep, reaching anterior ocellus. Antennal insertion on lower ocular line. Clypeal margin slightly protruded, straight; oral fossa 0.44 x as wide as head; right mandible with four teeth, left mandible with three teeth. Head in lateral view with malar sulcus inconspicuous, eye height 1.74 x malar space. Antennal scape length 1.44 x eye height, exceeding vertex (Figs 2, 3); pedicel in lateral view 2.38 x as long as broad; anellus transverse; Fu1 1.8 x as long as broad, slightly longer than Fu2; each funicular segment with sensilla except Fu1; clava not clavate, 2.25 x as long as broad. Head in dorsal view (Fig. 4), 1.82 x as wide as long; vertex convex; eye length 2.86 x temple length; POL 1.33 x OOL. Head as broad as mesosoma. Mesosoma not distinctly convex, 2.13 x as long as broad. Pronotum 0.85 x as broad as mesoscutum, anteriorly margined, posterior band smooth. Mesoscutum 1.74 x as broad as long, anterior half weakly reticulate and posterior half with deep reticulation; notauli incomplete, only distinct basally. Scutellum 1.18 x as broad as long, frenal line absent; reticulation shallow. Propodeum (Fig. 5) medially 0.6 x as long as scutellum, reticulation irregular on median area, with short irregular carinae; plicae distinct and complete, separated by 1.2 x medial length of propodeum; median carina complete, costula distinct; nucha short; propodeal spiracles oval, 1.5 x as long as broad. Fore wing 2.53 x as long as broad, without marginal fringe (Fig. 6); basal vein and basal cell bare; upper surface of costal cell bare, lower surface with scattered setae; submarginal vein 1.75 x marginal vein, marginal vein 1.8 x postmarginal vein, postmarginal vein longer than stigmal vein (1.33 x ); stigmal vein slightly capitate. Gaster spindle-shaped (Fig. 1) with apex pointed, 2.1 x as long as broad, 1.49 x as wide as mesosoma; Gt1 covering 1/4 of gaster, each segment with hind margin entire except hind margin of Gt1 trilobed. Male. As female, with the following differences. Body length 3.0-3.5 mm (Fig. 7). Antennal insertion above the lower ocular line, each funicular segment longer than broad, with 3-4 rows setae. Variability. Females: body length 2.9-3.5 mm, others same as holotype. Males: body length 2.6-3.0 mm. Remarks. This new species is similar to M. raptor and M. sinesensilla sp. n., but noticeably different by the absence of a marginal fringe on the fore wing. It is also very close with M. adanacus in having the fore wing without a fringe, but can be recognized with the characters listed in the key. Material examined. Holotype. ♀, China: Xinjiang: Urumqi, 43.45°N 87.36°E , VII.2016, ex. Pupa of Musca domestica , leg. Hao-yuan Hu, IOZ(E)1812530 (2016-WJ-066). Paratypes. 7♂, IOZ(E)1812531-1812537 (2016-WJ-062), 7♀, IOZ(E)1812538-1812544(2016-WJ-066), same data to holotype. Etymology. The name refers to the similarity of this species with M. adanacus , and is to be treated as an adjective. Hosts. Pupa of Musca domestica . Distribution. China (Xinjiang).