Asilidae. 19 



brown, the supraalar bristles short, generally black, sometimes brown. 

 Pleura black, shining; the conimon hairy stripes wanting, only a 

 small stripe between the humeras and the wing-root present; at the 

 hind margin of the mesopleura some few hairs, the metapleura with 

 long, whitish hairs. Abdomen black, shining, venter of the same colour, 

 often with pale incisures. Abdomen sparingly clothed with short, black 

 hairs, on the lateral margin of the first segment some longer, generally 

 yellowish hairs; venter with somewhat long, pale hairs; genitalia with 

 moderately long, brownish to blackish hairs. Legs with the coxæ black, 

 femora pale yellow at the basal half, the apical half black, tibiæ black with 

 the bases pale yellow, all tarsi black; the hind tibiæ slightly thickened 

 at the apex, the hind metatarsi not distinctly thickened yet a little broader 

 than the foUowing joint. The coxæ have long, whitish hairs on the out- 

 side, otherwise the legs are clothed with short brownish or blackish hairs; 

 the fringes on the hind legs are blackish brown. The long, thin hairs 

 on the ventral side of the femora and hind tibiæ are yellowish or 

 brownish. The strong spine-like bristles on the legs are yellow to 

 brown. Wings slightly yellowish with dark brown veins. Halteres 

 yellow to ferrugineous. 



Feraale. The female differs somewhat from the male; the black 

 space below the antennæ is smaller, the antennæ have brownish hairs, 

 the hairs on the palpi are yellow and those on the occiput yellow 

 to brown. The pruinose stripes on the thoracic disc are broader and 

 the middle stripe more distinct, the stripes are somewhat confluent 

 posteriorly. The pubescence on thorax and abdomen is yellow. The 

 femora are quite ferrugineous, paler at the base, sometimes the hind 

 femora are brownish or blackish brown at the apical half; also the 

 pubescence on the legs is paler. The wings are more yellowish, 

 especially at the base. 



Length 11 — 13 mm. 



This species is easily distinguished by the absence of the common 

 hairy stripes on the pleura. It is evident that Low 1. c. 412 has had 

 only the male and under cothurnata only the female; Zetterstedt 

 has probably also described only the male under Reinhardi and the 

 female under cothurnata; he says only about the sexual differences 

 that the abdomen in the male is a little narrower than in the female, 

 and this is not a safe distinction. 



D. Reinkardi cannot be termed rare in Denmark, but it is 

 hitherto only known from Funen and Jutland; Funen at Faaborg 

 and Jutland in Greisdalen at Vejle, at Frijsenborg, between Holstebro 

 and Struer and at Sæby; the dates are in July and August. 



2* 



