174 - Orthorrhapha brachycera. 



Venter greenish, grey pruinose, with yellow hairs, somewhat long at 

 the base. Hypopygium large, rather high and eompressed in its 

 anterior part; it is blackish green, greyish pruinose; eighth segment 

 with black hairs, somewhat long at the margin; on the ventral side 

 there are somewhat narrow lobes in the middle, directed downwards 

 and backwards, each with two hairs at the end; at the end of the 

 hypopygium there are tw^o pairs of inner lamellæ; the lateral resemble 

 those in gracilis, they are brownish black, narrow, two-pointed, with 

 the points turned upwards and each point ending in a bristle or 

 spine; the median inner lamellæ are somewhat large, hook-like with 

 the apex curved downwards and with a little lobe or tooth at the 

 upper margin; they are black, only the dorsal tooth is yellow; the 

 median dorsal appendage is hook-shaped, and it is somewhat tri- 

 partite as it has a lobe on each side at the base, and these lobes 

 are again bilobate, but the whole appendage is only seen by dissec- 

 tion ; the outer lamellæ are somewhat small, triangular or almost 

 crescent-shaped, with the ventral margin concave; they are black or 

 brownish black, the apical margin is serrated and has hairs, which 

 are long towards the apex. Legs yellow, posterior coxæ grey with 

 the apex yellow; anterior tarsi with apex of metatarsus and the four 

 folio wing joints black; hind tibiæ with the apical part, and hind tarsi 

 black, the metatarsus a little shorter than the second joint. The legs 

 have short, black hairs, femora inconspicuously pale-haired below; 

 posterior femora with one preapical bristle; front tibiæ with bristles 

 above, and generally a small postero-ventral bristle; middle tibiæ with 



Fig. 52. Wing of H. germanus d". 



two dorsal rows of bristles, two, sometimes three antero-ventral 

 bristles and one ventral bristle; hind tibiæ with two dorsal rows and 

 with a ventral row of somewhat smaller bristles. Wings brown, but 

 varying from somewhat light to dark brown, they are darkest towards 

 the anterior margin; veins black or brownish black; discai vein with 

 a small bend and more or less converging towards the cubital vein, 

 the first posterior cell thus somewhat narrowly or more broadly open 



