Dolichopodidae. 



127 



D. nubilus. Apical part of 

 hypopygium. 



a little longer on the first segment. Venter greenish grey, slightly 

 pale-haired. Hypopygium not long, but somevvhat robust, æneous 

 black, greyish pruinose; eighth segment with black hairs; the posterior 

 ventral lobes are curious, they are not long, but broad, produeed 

 downwards and about triangular, 

 and they have some hairs; also 

 the middle ventral lobes are pro- 

 longed, and are thin, but as far 

 as I could see they are not sym- 

 metricai, the left being longer and 

 of another shape than the right ; 

 the inner lamellæ are long, as long 

 as the outer, slightly curved, the 

 lateral almost straight, dilated at 

 the apex, the median thin; the 

 outer lamellæ are rather small, 

 irregularly triangular, somewhat 

 petiolated; they are whitish or 

 yellowish white with a very narrow, blaciiish margin only along the 

 apical edge; they have no teeth and bear only somewhat short, brown 

 or paler hairs along the dorsal and apical margin. Legs yellow, front 

 coxæ whitish pruinose anteriorly, and with a little grey spot at the 

 base, posterior coxæ grey, with the apical part yellow; hind femora 

 with a black spot above at the apex; anterior tarsi with the apical 

 part of metatarsus and the following joints black; hind tibiæ black 

 at the apex and hind tarsi black. The legs have short, black hairs, 

 anterior coxæ somewhat white-haired outwards ; posterior femora with 

 one preapical bristle; front tibiæ with bristles above, and one or two 

 on the postero-ventral side; middle tibiæ with about four antero- 

 dorsal bristles (one of them more dorsal), two postero-dorsal, and 

 one ventral below the middle; hind tibiæ with two dorsal rows of 

 bristles, one ventral bristle towards the apex, and a ventral row of 

 small, distantly placed bristles; hind metatarsi with two dorsal, some 

 anterior, and with quite small ventral bristles. Wings somewhat 

 blackish or brownish tinged at the anterior margin, especially above 

 the cubital vein, sometimes, namely in fresh specimens, the tinge 

 is very indistinct; veins blackish; discai vein with a somewhat angular, 

 but obtuse bend; axillary lobe of medium size, anal vein going 

 somewhat downw^ards. Squamulæ whitish yellow, with a whitish 

 fringe. Halteres pale yellow, 



Female. Epistoma broader than in the male, greyish white, 

 pubescent as in the male. Antennæ shorter than in the male, especi- 



