Mydaea combiniseriata 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 combiniseriata 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. 3♂♂, same data as holotype.

Diagnosis.

5 or 6 frontal setae situated on lower half of frons; scutellum yellow; postpronotal lobe black; anterior spiracle fuscous; legs with femora and tibiae yellow; only distal part of hind femur with distinct pv and 5 or 6 small pv on basal half.

Description.

Male. Body length 7.2-7.4 mm. Head: eyes bare, frontal vitta black, fronto-orbital plates and parafacials brown, mediane red-brown; antennae black, arista brown-yellow; lunule dark brown; genae black, genal and postgenal hairs entirely black; palpi black. Frons less than twice the width of anterior ocellus; fronto-orbital plates contiguous in the middle; frontal triangle on upper 1/3 of frons; fronto-orbital plates and parafacials covered with sparse gray pruinosity, parafacial approximately 1/2 as wide as postpedicel; genal height approximately 1/9 of eye height, genae covered with gray pruinosity; lower face not projecting, vibrissal angle situated behind frontal angle in lateral view. 5or 6 pairs frontal setae situated on lower half of frons; proclinate orbital setae absent; ocellar setae long and strong, slightly longer than the lower frontal setae; postpedicel approximately 3.5 times as long as wide; arista plumose, the longest hairs approximately 4/5 as width of width of postpedicel; palpus black, 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 as long as height of prementum. Thorax: fuscous, only scutellum yellow, covered with sparse gray pruinosity; scutum with 4 black vittae, and the inner vittae extending to scutoscutellar suture; acr 0+1; dc 2+4; ial 0+2; pra strong, approximately 1.3 times as long as posterior notopleural seta; lateral and ventral surfaces of scutellum without hairs; basisternum of prosternum, anepimeron, meron, katepimeron bare; notopleuron with hairs; katepisternal setae 1+2; anterior spiracle fuscous and posterior spiracle light brown. Wings: semi-hyaline and slightly brown; base of wing pale yellow; tegula and basicosta yellow; costal spine small; ventral surface of vein C with hairs; vein Sc bow-shaped; crossvein r-m straight, crossvein dm-m bent towards base of wing, areas around crossveins r-m and dm-m not clouded; dorsal and ventral surface of radial node with hairs; R4+5 and M1 straight, apical part of M1 bent forward slightly; calypter pale yellow, lower calypter tongue-shaped; halter knob yellow. Legs: femora and tibiae yellow but dorsal surface of fore femur fuscous; coxae, trochanters, and tarsi fuscous; fore tibia without median p; mid femur with pv row on basal half, 1 apical ad, 3 apical pd, mid tibia with 3 p; hind femur with distinct av and pv only at distal part, and 5 or 6 small pv on basal half; hind tibia with 2 pd, 5 pv; tarsi slight longer than tibiae; only fore claws longer than pulvilli, mid and hind claws shorter than pulvilli, fore claws approximately as long as tarsomere 5. Abdomen: black in ground color, covered with light gray pruinosity, both sides of abdomen without color shifting patch, tergite 3 with a complete row of posterior marginal setae, but short and sparse, median pair shorter than half the length tergite 3, tergites 4 and 5 with complete rows of posterior marginal setae and these slightly longer, approximately 3/5 of the length of the tergite, tergite 4 with 3 pairs of discal setae, tergite 5 with 4 pairs of discal setae; posterior margin of sternites 2 and 3 each with a pair of apical setae, posterior margin of sternite 4 with 2 pairs of apical setae, inner margin of lateral lobe at basal part of sternite 5 with a row of 6 or 7 close-set setae, sursyli near rectangle, and inner margin with hairs.

Female. Unknown.

Remarks.

This species is similar to Mydaea corni (Scopoli, 1763), but differs from the latter in the following features: male eyes bare; 5 or 6 pairs of frontal setae situated on lower half of frons; genal height approximately 1/9 of eye height; acr 0+1; pra long and large, approximately 1.3 times as long as posterior notopleural seta; hind tibia without ad; both sides of abdomen without color shifting patches.

Etymology.

The species name refers to the lobe of sternite 5, which in males have a long row of setae. It is derived from the Latin words combin meaning combined and seriat meaning rows.

Distribution.

China, Liaoning Province (Qingyuan).