Mydaea adhesipeda 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 adhesipeda Xue sp. nov.

Type material.

Holotype. China, 1 ♂, Ningxia Hui Autonomous Region, Jingyuan, Liupan Mountains, 35°39'N, 106°34'E, alt. 2200 m, 3 July 2009, Zhiyuan Yao, (SYNU). Paratypes. 2♂♂, 5 ♀♀, same data as holotype.

Diagnosis.

Post-dc 4, scutellum dark black; basal and apical scutellar seta approximately as long as hind tibia; coxae and trochanters brown, tarsi dark brown, ventral surface of fore tarsus with adhesive hairs; femora and tibiae yellow; hind femur with av rows on distal half.

Description.

Male. Body length 8.0-8.5 mm. Head: eyes bare, facets on upper half not enlarged. Frontal vitta black; lunule brown; genal and postgenal hairs entirely black; antenna fuscous, palpus black. Frons as wide as postpedicel, and slightly wider than distance between outer margins of posterior ocelli; fronto-orbital plate narrow, 2/5 of width of frons at middle; fronto-orbital plates, parafacials and genae covered with sparse gray pruinosity, parafacials as wide as or narrower than the width of postpedicel; genal height approximately 1/9 of eye height; lower face not projecting, vibrissal angle situated behind frontal angle in lateral view. Frontal setae with 7 or 8 pairs, upper 2 pairs short and situated on lower 4/5 of frons; proclinate orbital setae absent; ocellar setae approximately 2/3 of lower pair of frontal setae in length; postpedicel 3.5 times as long as wide; arista ciliated and longest hair approximately as long as width of postpedicel; palpi as long as prementum; prementum 2.5 times as long as wide, and covered with gray pruinosity; labellum extending to posterior part, and approximately 4/5 as long as palpi. Thorax: ground color black, covered with sparse gray pruinosity and slightly shining; scutum with 4 black vittae, and the inner vitta extending to scutoscutellar suture; acr 0+1; dc 2+4; ial 0+2; pra slightly shorter than posterior notopleural seta; notopleuron with small hairs; scutellum black, basal and apical scutellar seta strong, approximately as long as hind tibia; basisternum of prosternum, anepimeron, meron, and katepimeron bare; katepisternal setae 1+2; 1 anepisternal seta; anterior and posterior spiracles yellow. Wings: semi-hyaline; tegula dark brown; basicosta yellow; ventral surface of vein C with hairs; vein Sc bow-shaped; dorsal and ventral surfaces of radial node with hairs; the middle part of crossvein dm-m bent towards base of wing, areas around crossveins r-m and dm-m not clouded; R4+5 and M1 straight and diverging slightly distally; calypter yellowish, lower calypter tongue-shaped; halter knob yellow. Legs: coxae and trochanters brown, tarsi dark brown, femora and tibiae yellow; ventral surface of fore tarsus with adhesive hairs, fore tibia with 1 median p; mid femur without av and 6 pv on basal half, 2 preapical ad, 3 pd, mid tibia with 2 or 3 (a few with 4) pv; hind femur with av rows on distal half, av short on basal half, without pv, hind tibia with 4 av, 2 ad, without apical pv; tarsi longer than tibiae; fore claws and pulvilli approximately 1.2 times as long as tarsomere 5, mid claws and pulvilli approximately as long as tarsomere 5, hind claws and pulvilli shorter than tarsomere 5. Abdomen: Black in ground color, ovate in dorsal view, covered with gray pruinosity, both sides without color shifting patch, tergites 3 and 4 with a black median vitta, tergites 4 and 5 each with a complete row of posterior marginal setae, both sides of tergite 5 with 3 or 4 discal setae on anterior half; sternite 1 bare; middle part of lateral margin of cerci invaginated slightly in posterior view.

Female. Body length 8.9-9.5 mm. Frontal vitta 3.5 times as wide as fronto-orbital plate; 7 frontal setae; 2 upper orbital setae; genal height approximately 1/6 of eye height; ventral surface of fore tarsus without adhesive hairs; mid tibia with 3 or 4 p; fore claws and pulvilli shorter than tarsomere 5. Other characters as in male.

Remarks.

This species is similar to Mydaea fuchaoi Xue & Tian, but differs from the latter in the following features: frontal vitta narrower; genae approximately 1/9 of eye height; palpi shorter; fore claws and pulvilli longer, fore tibia with 1 median p; ventral surface of fore tarsus with adhesive hairs; hind claws and pulvilli shorter, hind tibia with 4 av; middle part of lateral margin of cerci slightly concave in posterior view.

Etymology.

The species name refers to ventral surface of the male fore tarsus which has adhesive hairs. It is derived from the Latin words adhes meaning adhesive and ped meaning leg.

Distribution.

China, Ningxia Hui Autonomous Region (Liupan Mountains).