Muscidifurax neoraptorellus Xiao & Zhou

Xiao, Hui, Zhou, Shi-yu & Tong, Yan-feng, 2018, A taxonomic study of Muscidifurax Girault & Sanders from China (Hymenoptera, Chalcidoidea, Pteromalidae), ZooKeys 776, pp. 91-103: 91

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Muscidifurax neoraptorellus Xiao & Zhou

sp. n.

Muscidifurax neoraptorellus Xiao & Zhou  sp. n. Figs 22-27


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 × as long as broad, Gt1 1/3 length of gaster.


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.

Head in frontal view 1.13 × as wide as high (Fig. 23); eye height 0.54 × head height, eyes separated by 1.63 × their 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 × distance from lower margin of torulus to lower margin of clypeus. Clypeus with longitudinal striation; clypeal margin straight, not protruded; oral fossa 0.46 × as 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 × malar space. Antennal scape length 1.33 × as long as broad, reaching vertex; length of flagellum and pedicel combined longer than head width (1.28 ×); anellus transverse; each funicular segment longer than broad, Fu1 1.38 × as long as broad, as long as Fu2; each funicular segment with sensilla except Fu1 and Fu2 (Fig. 24); clava not clavate, 2.67 × as long as broad. Head in dorsal view, 1.75 × as wide as long; vertex convex and with coarse reticulation; eye length 2.47 × temple length; POL 0.75 × OOL.

Head as broad as mesosoma. Mesosoma 1.33 × as long as broad. Pronotum 0.83 × as broad as mesoscutum, anteriorly margined, posterior band smooth and with a row of hairs. Mesoscutum 1.83 × as broad as long; notauli only distinct basally. Scutellum with reticulation shallow, frenal line absent. Propodeum (Fig. 25) medially 0.8 × as long as scutellum, reticulation irregular; plicae distinct and complete, separated by 1.44 × medial length of propodeum; median carina raised and complete; nucha short, with coarse reticulation; propodeal spiracles oval. Fore wing 2.62 × as long as broad, without marginal fringe (Fig. 26); basal vein and basal cell bare; submarginal vein 1.37 × marginal vein, marginal vein 1.73 × postmarginal vein, postmarginal vein longer than stigmal vein (1.32 ×); stigmal vein straight, stigmal slightly capitate.

Gaster sessile, spindle-shaped with apex pointed, 1.65 × as long as broad, 1.14 × as 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 × as long as scape, longer than other funicular segments, 2.46 × as long as wide. Lateral panel of metanotum golden (Fig. 27). Gaster dorsum yellow in median area.


This new species is very close to M. raptorellus  , but noticeably different from M. raptorellus  in 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.


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.


Pupa of Musca domestica  .


China (Shandong).