A taxonomic study of Muscidifurax Girault & Sanders from China (Hymenoptera, Chalcidoidea, Pteromalidae) Xiao, Hui Zhou, Shi-yu Tong, Yan-feng ZooKeys 2018 776 91 103 http://zoobank.org/81DADF11-ADE6-45B4-A668-FFEBB95392A7 Xiao & Zhou Insecta Pteromalidae Muscidifurax CoL Animalia Muscidifurax neoraptorellus Hymenoptera 0 91 Arthropoda species neoraptorellus  Diagnosis. Clypeus with longitudinal striation; clypeal margin not protruded; antenna with each funicular segment longer than broad, each funicular segment with sensilla except Fu1 and Fu2; median area of propodeum without coarse rugae; fore wing without marginal fringe, usually with reduced pilosity; gaster 1.65 xas long as broad, Gt1 1/3 length of gaster.  Description. Holotype. Female. 2.2 mm (Fig. 22). Head and mesosoma black, with blue metallic reflections; gaster dark brown with metallic reflections basally. Antennal scape brown, flagellum dark brown; legs brown except coxae concolorous with body; fore wings hyaline, venation brown except marginal vein dark brown.  Figures 22-27. Muscidifurax neoraptorellussp. n., 22-26 female holotype 22 Body in lateral view 23 Head in frontal view 24 Head and antenna in lateral view 25 Propodeum 26 Fore wing 27 Male, Body in dorsal view. Head in frontal view 1.13 xas wide as high (Fig. 23); eye height 0.54 xhead height, eyes separated by 1.63 xtheir height; antennal scrobes deep, not reaching anterior ocellus; reticulation in antennal scrobe smaller than that on parascrobe. Antennal insertion on lower ocular line, distance from upper margin of torulus to lower margin of anterior ocellus 1.56 xdistance from lower margin of torulus to lower margin of clypeus. Clypeus with longitudinal striation; clypeal margin straight, not protruded; oral fossa 0.46 xas wide as head; right mandible with four teeth, left mandible with three teeth. Head in lateral view (Fig. 24) with malar sulcus inconspicuous, eye height 1.24 xmalar space. Antennal scape length 1.33 xas long as broad, reaching vertex; length of flagellum and pedicel combined longer than head width (1.28 x); anellus transverse; each funicular segment longer than broad, Fu1 1.38 xas long as broad, as long as Fu2; each funicular segment with sensilla except Fu1 and Fu2 (Fig. 24); clava not clavate, 2.67 xas long as broad. Head in dorsal view, 1.75 xas wide as long; vertex convex and with coarse reticulation; eye length 2.47 xtemple length; POL 0.75 xOOL. Head as broad as mesosoma. Mesosoma 1.33 xas long as broad. Pronotum 0.83 xas broad as mesoscutum, anteriorly margined, posterior band smooth and with a row of hairs. Mesoscutum 1.83 xas broad as long; notauli only distinct basally. Scutellum with reticulation shallow, frenal line absent. Propodeum (Fig. 25) medially 0.8 xas long as scutellum, reticulation irregular; plicae distinct and complete, separated by 1.44 xmedial length of propodeum; median carina raised and complete; nucha short, with coarse reticulation; propodeal spiracles oval. Fore wing 2.62 xas long as broad, without marginal fringe (Fig. 26); basal vein and basal cell bare; submarginal vein 1.37 xmarginal vein, marginal vein 1.73 xpostmarginal vein, postmarginal vein longer than stigmal vein (1.32 x); stigmal vein straight, stigmal slightly capitate. Gaster sessile, spindle-shaped with apex pointed, 1.65 xas long as broad, 1.14 xas wide as mesosoma; each segment with hind margin entire except Gt1 trilobed; Gt1 covering 1/3 length of gaster. Male. As female, with the following differences. Body length 2.5 mm. Antennal insertion above the lower ocular line, each funicular segment longer than broad; Fu1 0.5 xas long as scape, longer than other funicular segments, 2.46 xas long as wide. Lateral panel of metanotum golden (Fig. 27). Gaster dorsum yellow in median area.  Remarks. This new species is very close to M. raptorellus, but noticeably different from M. raptorellusin having the first and second funicular segments without sensilla (only Fu1 without sensilla in M. raptorellus), and the median area of propodeum without coarse rugae (with distinctly coarse rugae in M. raptorellus).  Material examined. Holotype. ♀, China: Shandong: Jinan, 36.40°N 117.00°E, 22.III.2016, reared from pupa of Musca domestica(captured on 27.II.2016), leg. Zhang-ze Hu, IOZ(E)1812557 (2016-WJ-002). Paratypes. 1♂, IOZ(E)1812559 (2016-WJ-005), 1♀, IOZ(E)1812558 (2016-WJ-002), same data as holotype.  Etymology. The species is intended to show similarities with M. raptorellus, hence the specific name is compound of 'neo-'and 'raptorellus'. It is to be treated as an adjective.  Hosts. Pupa of Musca domestica.  Distribution. China (Shandong).