Helina midmargiseta Xue & Sun 2014, sp. nov.
Creators: name: Xue, Wanqi
name: Sun, Hongkui
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Muscidae
Helina
Helina midmargiseta

description: Helina midmargiseta Xue sp. nov.
(Figure 4A–D)
Type material
Holotype. One male (IESNU), China, Snow Mount Baimang, Yunnan Province, 28° 18' N, 98°58' E, altitude 4250 m, 26 July 2008, X.D. Fei.
Paratypes. One male (IESNU), same data as holotype.
Etymology
The specific name is based on tergite 5 with a pair of median marginal setae.
Distribution
China, Yunnan Province, Snow Mount Baimang.
Remarks
This new species is similar to Helina setipostitibia Wang et al. 2004, but differs from it as follows: frontal vitta about a half width of frons; parafacial about 1.2 times as broad as postpedicel; genal height slightly shorter than one-quarter of eye height; cross-veins r-m and dm-cu not distinctly clouded; fore tibia with 1 median p; mid tibia
only with 3 p, without ad and 2 rows of p; hind tibia with 4–5 av; abdomen oval in dorsal view, patches small.
Description (based on holotype)
Male. Body length 8.3–8.5 mm.
Head. Eyes with sparse ciliae; frons about 1.5–2.0 times as broad as anterior ocellus; interfrontal villi black, the narrowest of frontal vitta about a half width of frons; 6–7 pairs of fr on lower three-fifths of frons, without ors; ocellar seta strong, subequal to the lower fr in length; fronto-orbital plate and parafacial with grey white pruinosity; parafacial about 1.2 times as broad as postpedicel; antenna black, the length of postpedicel about 3.0 times as long as its width; arista long plumose, the longest hairs about 1.2 times as long as the width of postpedicel; lunule dark orange; epistoma not protruding; vibrissal angle situated behind frontal angle; anterior margin of gena with 1–2 rows of upcurved setae, genal and postgena setulae black; genal height slightly shorter than one-quarter of eye height; epicephalon with minority hairs; prementum with pruinosity, length about twice as long as height; palpus black, about 1.5 times as long as prementum; labella large, subequal to prementum length.
Thorax. Ground-colour black, with steel grey pruinosity; scutum with four black vittae, inner vitta reaching posterior three-quarters of postsutural area of scutum; acr 0+1, dc 2+4, ial 0+2, pra about one-half length of posterior notopleural seta, posthumeral seta 1+0; near posterior notopleural seta with many hairs; lateral and lower surfaces bare, basisternum of prosternum, proepisternum hollow in centre, anepimeron and katepimeron all bare, meron with many hairs; anterior anepisernal seta 1, katepisternal setae 1+2; spiracles large and brown.
Wing. With light orange colour, basicosta yellow; costal spine distinct, Sc bowshaped, radial node bare, R 4+5 and M straight, diverging in distal part, cross-veins r-m and dm-cu not distinctly clouded; calypters light orange yellowish, lower calypter protruding, haltere yellow.
Legs. Completely black; fore tibia with 1 median p; mid femur av indistinct, pv row complete, shorter towards apex; mid tibia with 3 p; hind femur with av row in apical half, without pv; hind tibia with 4–5 av, ad 2–3, witnout pd, middle part with posterior setulae row, without pv in apical part; tarsi longer than tibiae, claws and pulvilli equal length, about four-fifths of tarsomere 5 length.
Abdomen. Ground-colour black, with dense and greyish pruinosity; oval in dorsal view; tergites 3 and 4 each with a pair of small and black brown patches, margin of the patches slightly integrates with shifting patches; shifting patches on tergites 3–5 large, 2–3 pieces of shifting patches on tergite 5; tergites 2–5 each with 1 median and dark black vitta; tergite 3 with a pair of median marginal setae; posterior marginal setae of tergites 4 and 5 complete; discal setae 1 row; body hairs short and dense; tergite 6 bare; sternite 1 with many short hairs.
Female. Unknown.
description: Published as part of Xue, Wanqi & Sun, Hongkui, 2014, Diagnosis and key for the Helina annosa-group (Diptera: Muscidae) from China, with descriptions of nine new species, pp. 1549-1583 in Journal of Natural History 49 (25) on pages 1561-1563, DOI: 10.1080/00222933.2014.954019, http://zenodo.org/record/4006279