164 



Orthorrhapha brachycera. 



Gabelastes. " In my specimens the anterior cubital branch is almost 

 straight and terminales about in the middle between the radial and 

 cubital vein ; Strobl too says nothing about such a course of the upper 

 cubital branch, as described by Mik. — It is perhaps possible, that the 

 specimens with more or less yellow, and those with really black bal- 

 teres are different, and that the two characters mentioned in Mik's 

 description belong only to the species with black balteres. 



13. H. pubipes Loew. 

 1873. Loew, Berl, ent. Zeitschr. XVII, 43, 35. — 1892. Strobl, Verh. 

 zool. hot. Geseli. Wien, XLII, 139, 29. — 1903. Kat. palåarkt. Dipt. II, 255. 



Male. Vertex, frons and epistoma grey; palpi grey, with yellow 

 hairs. Occiput grey, with black hairs above, which are present only 

 along the eye-margin; downwards with yellowish hairs. Antennæ black. 

 Thorax light or almost bluish grey, with four brownish black stripes, 

 the two median abbreviated behind, the lateral abbreviated at both 

 ends, forming cuneiform spots. The dorsocentral and acrostichal bristles 

 short, black ; the former uniserial, longer behind, the latter very short, 

 quadriserial behind, irregular in front, and for the rest on the whole 

 somewhat irregular. Further a humeral bristle, a post- 

 humeral, three notopleural, a supraalar and a postalar 

 bristle, all black, rather small. Pleura light grey. Scu- 

 tellum with four black marginal bristles. Abdomen light 

 grey, clothed with longish, whitish yellow hairs, and with 

 fine marginal bristles at the sides of the segments. Venter 

 grey, short-haired. Exterior genitalia small, somewhat 

 compressed, yellow-haired ; the lamellæ short, somewhat 

 blackish. Legs black, but distinctly greyish pruinose, knees 

 narrowly yellowish; coxæ light grey; the posterior side 

 of the hind femora shining black on the basal half. Front 

 femora with fine hairs on the posterior side and some 

 stronger hairs on the anterior side; middle femora with 

 long hairs on the antero-dorsal side ; hind femora short- 

 haired, only with some longer hairs below towards the 

 apex; front tibiæ short-haired, with some not long bristles 

 above; middle tibiæ densely haired, especially on the 

 anterior and posterior side; on the anterior side the 

 Fig. 60. H.pu- hairs longish; the hairs are continued out on the tarsi, 

 bipes, tont leg. only here a little shorter; hind tibiæ short-haired, with 

 ^ ^^- some bristles on the dorsal side. Front metatarsi thickened, 

 somewhat thicker than tibiæ, they are about four fifths of the tibiæ in 

 length, and a little longer than the other four joints together; they 



