Drymeia spinicosta Xue and Xiang, sp. nov.
Creators: name: Xue, Wan-Qi
name: Wang, Dan-Dan
name: Zhang, Xue-Zhong
name: Xiang, Chao-Qun
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Anthomyiidae
Drymeia
Drymeia spinicosta

description: Drymeia spinicosta Xue and Xiang, sp. nov.
(Figs. 22–28)
Description
Male. Body length 6.2–6.5 mm. Head: Eye bare; frons about 2.5–3.0 times as wide as anterior ocellus or narrower than the distance between outer margins of posterior ocelli; frontal vitta black, narrow in the middle, about 1/3–1/2 width of fronto-orbital plate; 8–10 frontal setae, the longest seta extending to anterior ocellus, without orbital seta; fronto-orbital plate and parafacial with grayish-white pruinosity; parafacial about 1.5 times as wide as 1st flagellomere; antenna black, 1st flagellomere about 1.5–1.8 times as long as wide, arista ciliated, the longest aristal hairs equal to its basal diameter; epistoma protruding over vibrissal angle in profile, vibrissal angle noticeably situated behind frontal angle in profile also; gena black, with grey pruinosity, and with 3–4 rows of upcurved subvibrissal setulae, genal height about 2/9 of eye height, dorsal area of occiput with hairs; proboscis thin and long, prementum shiny, about 4.0–4.5 times as long as broad; palpus blackish-brown, shorter than the length of prementum.
Thorax. Ground color black, with olive green metallic luster; with slight brown pruinosity, scutum with four indistinct vittae, with 2 rows of hair-like presutural acr, postsutural acr 1, dc 2+3, ia 0+2, pra slightly shorter than the length of posterior notopleural seta; notopleuron with hairs; lateral and ventral margins of scutellum, basisternum of prosternum, anepimeron, meron and katepimeron all bare; katepisternal setae 1+2.
Wing. Light brown, slightly hyaline; wing base and veins brown, basicosta black, costal spine developed and longer than length of r-m crossvein, Sc straight; R4+5 and M veins parallel, more or less separated distally; m-m crossvein curved in the middle, veins bare except dorsal surface of C vein with distinct short spine; calypters brown, margins brown, halter dark brown.
Legs. Entirely black; fore tibia with a row of small ad, 3 pv in the middle; mid femur with complete av and pv rows, which become shorter towards apex, mid tibia with 4–5 av, 3–4 ad, a row of about 5–6 p, and 4– 5 pv; hind femur with a complete av row, and about 9–10 setae in pv row thin and long, which become shorter towards apex, without median p; hind tibia with 6–7 av, 1 thin pv row, ad row irregular and with 3–4 longer and stronger setae in the row; with 5–6 pd; without apical ventral projection; claws and pulvilli of all legs longer than 5th tarsomere.
Abdomen. Black, long and egg-shaped, with olive green metallic luster and with grey pruinosity, all tergites with indistinct lateral patch, posterior marginal setae long and large, sternite 1 bare; outboard processes of cerci very blunt and distal 1/3 broad in posterior view; processes on inner margin of surstylus pointed in the middle in lateral view.
Female. Body length 6.5–7.5 mm. Frons about 1/3 width of head; frontal vitta about 2.5 times as wide as fronto-orbital plate, with long and large interfrontal setae, with 5–6 pairs of orbital setae, 2 outer orbital setae and 1 reclinate orbital setae, with 2 rows of upcurved subvibrissal setulae, genal height about 1/3 of eye height, margins of calypters brown; fore tibia with 2–3 av; mid femur with complete av and pv rows, becoming shorter towards apex; mid tibia with 4–5 av, 3–4 ad, a row of about 5–6 p, 4–5 pv; hind femur with a complete av row, pv row thin and long (about 9–10), shorter towards apex, without apical pv; hind tibia without distinct pv, with 4 pd; 3 spermathecae, ovipositor thin and long, both tergite 8 and sternite 8 divided into 2 parts, each enlarged terminally, and with 5–6 strong spines on them.
Type material
Holotype, male, P.R. CHINA: Qinghai, Yushu County, Batang, 3900–4300 m, 16–22.vi.1964 (Shu-yong Wang).
Paratypes, P.R. CHINA: 10 males, 11 females, the same data as holotype. Allotype, P.R. CHINA: 1 female, same data as holotype. The specimens are deposited in the Chinese Academy of Sciences, Beijing, China
Remarks
This species is close to Drymeia aeneoventrosa (Fan, Jin and Wu), but differs from it by the presence of a conspicuous row of comb-like spines on C vein, with 1 strong pra, notopleuron with hairs, calypters brown or yellowish, different from color of their margins, mid femur with a complete row of av.
Etymology
The species name is from the Latin words spin- meaning spine and costa meaning brim, referring to the anterior margin of C vein in the male that has a conspicuous row of comb-like spines.
description: Published as part of Xue, Wan-Qi, Wang, Dan-Dan, Zhang, Xue-Zhong & Xiang, Chao-Qun, 2007, Five new species of Drymeia Meigen from the Tibet Plateau, China (Diptera: Muscidae), pp. 35-51 in Zootaxa 1444 on pages 46-48, DOI: 10.5281/zenodo.176084