Hebecnema arcuatiabdomina (Feng & Fan, 2001) Feng & Fan, 2001

Wang, Ming-Fu, 2013, New synonymies and new combinations of Muscidae from China (Diptera, Muscoidea), ZooKeys 290, pp. 31-38 : 35-36

Hebecnema arcuatiabdomina (Feng & Fan, 2001) comb. n.

Helina arcuatiabdomina Feng & Fan, 2001: 188; Xue et al. 2005: 47; Xue and Wang 2006: 171.

Description.

(Translated from Feng and Fan 2001.) MALE. Body length about 7.0mm. Eye bare, upper part slightly flattened, facets obviously expanded on anterior margin in upper part, frons at its narrowest point about 1/3 of the width of anterior ocellus, lower half of fronto-orbital plate with 3 frontal setae; ocelli mound-like; parafacial about half as wide as postpedicel; antennal scape and pedicel black, brown distally, postpedicel 2.5 times as long as broad, arista short plumose, the longest hairs slightly shorter than half of postpedicel width; face distally slightly raised, upper part with a flat facial ridge; gena and postgena with black hairs, front gena with subvibrissal setae into 2 rows, genal height about 1/10 of the eye height; prementum about as long as high; palpus dark. Thorax with thin greyish blue pollinosity, scutum without distinct longitudinal stripes, acr 3+5 (prescutellar acr short), dc 2+4, ia 0+2, pra absent; lateral and lower margins of scutellum bare; basisternum, notopleuron, meron, katepimeron and metanepisternum bare; spiracle dark brown, half-open; proepisternal setae 2, proepimeral setae 2, katepisternal setae 1+2. Tegula blackish-brown, basicosta brownish-yellow, costal spine incon spicuous; node of Rs bare, crossveins without a cloudy appearance, veins R4+5 and M slightly diverging in distal part; calypteres brownish, halteres dark redish-brown. Coxae and trochanters brownish-yellow; femora and tibiae brownish-yellow, tarsi black, distal part of tarsi with yellow rings; fore tibia without p; basal third of mid femur with 4 pv (short and stout distally), mid tibia with 3 p, distally with 1 p; hind coxa bare on posterior surface, hind femur with complete rows of av and p, 1 av distally. Abdomen slightly dark yellow, with thin pollinosity, without distinct stripes and round patches, syntergite 1+2, tergites 3 and 4 with narrow posterior marginal stripes, tergites 3 to 5 with median marginal setae; tergite 6 and sternite 1 bare, sternites 2 and 3 square-shaped.

FEMALE. Unknown.

Remarks.

The genus Hebecnema Schnabl, 1889 resembles the genus Helina but differs from it by the following characters: abdomen always without paired spots; fronto-orbital plate narrow, always narrower than antenna width; head in lateral view slightly flat on upper part; surstyli always slender.

According to the original descriptions and illustrations of Helina arcuatiabdomina given by Feng and Fan(2001), we can confirm that this species belongs to Hebecnema .

Distribution.

China (Sichuan).