Mydaea qingyuanensis Xue

Du, Jing, Hao, Bo, Xue, Wanqi & Zhang, Chuntian, 2019, Five new species of Mydaea from China (Diptera, Muscidae), ZooKeys 897, pp. 101-114 : 101

Mydaea qingyuanensis Xue sp. nov.

Type material.

Holotype. China, 1 ♂, Liaoning Province, Qingyuan, 41°81'N, 124°91'E, alt. 800 m, 3 June 2016, Bing Li, (SYNU). Paratypes. 2♂♂, same data as holotype.

Diagnosis.

Frons narrower than the width of anterior ocellus; scutellum yellow, prst-acr absent, post-dc 4, anterior and posterior spiracle yellow; hind femur with complete pv row, hind tibia without ad.

Description.

Male. Body length 7.8-8.0 mm. Head: eyes bare; frontal vitta black; antennae black,lunule brown; genae black, genal and postgenal hairs entirely black; palpi black. Frons narrower than the width of anterior ocellus; fronto-orbital plates contiguous in the middle; frontal vitta situated on upper 2/5 of frons; Fronto-orbital plates and parafacials covered with sparse gray pruinosity, parafacials approximately 3/5 as wide as postpedicel; lower face not projecting, vibrissal angle situated behind frontal angle in lateral view; genae covered with gray pruinosity, genal height approximately 1/9 of eye height. Frontal setae in 13 or 14 pairs and extending upwards to anterior ocellus, 5 or 6 strong pairs on lower 2/5 of frons, 7 or 8 extremely small pairs on upper 3/5 and these shorter than eye facets; proclinate orbital setae absent; ocellar setae strong, slightly longer than the lower frontal setae; postpedicel approximately 3.5 times as long as wide, arista plumose, longest hairs approximately as long as width of postpedicel; palpus approximately 1.5 times as long as prementum, prementum short, approximately 1.5 times as long as high, and covered with sparse gray pruinosity; labellum long and big, the length of labellum approximately twice the height of prementum. Thorax: black, but scutellum yellow, covered with sparse gray pruinosity; scutum with 4 black vittae, and inner vitta not extending to scutoscutellar suture; acr 0+1; dc 2+4; ial 0+2; pra distinct, slightly shorter than posterior notopleural seta; lateral and ventral surfaces of scutellum without hairs; basisternum of prosternum, anepimeron, meron, and katepimeron bare; notopleuron with hairs; katepisternal setae 1+2; anterior and posterior spiracles yellow. Wings: semi-hyaline and pale brown; tegula and basicosta yellow; costal spine slightly short than crossvein r-m; ventral surface of vein C with hairs; vein Sc bow-shaped; areas around crossveins r-m and dm-m not clouded and straight; dorsal and ventral surface of radial node with hairs; R4+5 and M1 straight, apical part of M1 slightly bent forward; calypter yellow, lower calypter tongue-shaped; halter knob yellow. Legs: Tibiae and femora brown-yellow; coxae, trochanters and tarsi dark brown; fore tibia without median p; mid femur without distinct av, 1 apical ad, 3 apical pd, complete pv rows, mid tibia with 3 p; hind femur with complete av and pv rows, hind tibia with 2 pd, 2 pv; tarsi slight longer than tibiae; pulvilli longer than claws, pulvilli approximately 2/3 of tarsomere 5 in length. Abdomen: ground color black; ovate in dorsal view, tergites 3-5 with a median black vitta, both sides of tergites 4 and 5 with distinct color shifting patches, tergites 3-5 with a complete posterior marginal rows of setae, tergites 4 and 5 with 4 or 5 pairs of discal setae, sternite 1 bare, apical margin of sternites 2-4 each with a pair of marginal setae; distal part of cerci and sursyli tapering in posterior view, dispart of cerci triangular in posterior view, sursyli narrowed on distal half in profile and bent backwards.

Female. Unknown.

Remarks.

This species is similar to Mydaea corni (Scopoli, 1763), but differs from it in the following features: male eyes bare; frontal setae in 13 or 14 pairs and extending upwards to anterior ocellus, 5 or 6 strong pairs on lower 2/5 of frons, 7 or 8 extremely small pairs at upper 3/5 and these shorter than facets of eye; postpedicel approximately 3.5 times as long as wide; genal height approximately 1/9 of eye height; acr 0+1; dc 2+4; pra shorter than posterior notopleural seta; posterior spiracle yellow; hind tibia without ad.

Etymology.

The species is named for the type locality, Qingyuan county.

Distribution.

China, Liaoning Province (Qingyuan).