Muscidifurax similadanacus 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

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 × head height; Fu1 slightly longer than Fu2; Fu1 without sensilla; median area of propodeum with distinct costula; gaster 2.1 × 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.

Head in frontal view 1.25 × as wide as high (Fig. 2); eyes with inner margins parallel, eye height 0.6 × head height, eyes separated by 1.5 × their height; antennal scrobes deep, reaching anterior ocellus. Antennal insertion on lower ocular line. Clypeal margin slightly protruded, straight; oral fossa 0.44 × 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 × malar space. Antennal scape length 1.44 × eye height, exceeding vertex (Figs 2, 3); pedicel in lateral view 2.38 × as long as broad; anellus transverse; Fu1 1.8 × as long as broad, slightly longer than Fu2; each funicular segment with sensilla except Fu1; clava not clavate, 2.25 × as long as broad. Head in dorsal view (Fig. 4), 1.82 × as wide as long; vertex convex; eye length 2.86 × temple length; POL 1.33 × OOL.

Head as broad as mesosoma. Mesosoma not distinctly convex, 2.13 × as long as broad. Pronotum 0.85 × as broad as mesoscutum, anteriorly margined, posterior band smooth. Mesoscutum 1.74 × as broad as long, anterior half weakly reticulate and posterior half with deep reticulation; notauli incomplete, only distinct basally. Scutellum 1.18 × as broad as long, frenal line absent; reticulation shallow. Propodeum (Fig. 5) medially 0.6 × as long as scutellum, reticulation irregular on median area, with short irregular carinae; plicae distinct and complete, separated by 1.2 × medial length of propodeum; median carina complete, costula distinct; nucha short; propodeal spiracles oval, 1.5 × as long as broad. Fore wing 2.53 × 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 × marginal vein, marginal vein 1.8 × postmarginal vein, postmarginal vein longer than stigmal vein (1.33 ×); stigmal vein slightly capitate.

Gaster spindle-shaped (Fig. 1) with apex pointed, 2.1 × as long as broad, 1.49 × 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).