94 Orthorrhapha brachycera. 



greyish pruinose; the eighth segment with black hairs; there are some- 

 what projecting posterior ventral lobes with a little, black style at the 

 end; inner lamellæ somewhat large, curved downwards, the median 

 most strongly curved, broad at the base, hook-shaped; the lateral 

 dilated, especially at the apex; the outer lamellæ somewhat large, 

 roimded rectangular, broadest at the end; they are whitish, the end 

 with a broad, indeterminately bordered, blackish margin; at the dorsal 

 end-corner there are some teeth with curved hairs, the first tooth 

 long; the rest of the apical and ventral margin serrated, the former 

 with yellow, curved hairs, the ventral margin with short, black hairs; 

 the inner surface has short, black hairs in the apical half. Legs long, 

 pale yellow ; front coxæ white pruinose anteriorly, posterior coxæ grey, 

 yellowish at the apex; middle tarsi with the four last joints blackish, 

 hind tibiæ blackish at the apex and hind tarsi black. Front tarsi 

 long, the last joint compressed and dilated, ovate, black, hairy at the 

 margin. The legs have short, black hairs, front coxæ white-haired 

 with a few black hairs intermingled ; the anterior femora with a row 

 of long, fine, yellow hairs below in the apical half, and the middle 

 femora with a few shorter, and black hairs below at the apex; all 

 femora with short, pale hairs below at the base; posterior femora 

 with two to three preapical bristles; front tibiæ with bristles above 

 and on the posterior side; middle tibiæ with about six antero-dorsal, 

 four postero-dorsal, four antero- and four postero-ventral bristles, the 

 uppermost in the two latter rows weaker; hind tibiæ with two rows 

 of dorsal bristles, and one ventral bristle below towards the apex, 

 besides a ventral row of fme, distant bristles; middle metatarsi with 

 one dorsal bristle, and hind metatarsi with three or four dorsal and 

 some anterior bristles. Wings somewhat yellowish; veins blackish, 

 costa with a long, black swelling; discai vein with a moderately large, 

 obtuse bend, especially the upper angle is rounded; axillary lobe not 

 large, anal vein going somewhat forwards. Squamulæ yellow, with a 

 fringe of long, yellow, a little curled and somewhat silky hairs. Halteres 

 yellowish white. 



Female. Epistoma broader than in the male but however rather 

 narrow, greyish white. Antennæ a little shorter, with the third joint 

 shorter. Front tarsi simple, not long, more or less darkened towards 

 the apex; femora without fringes. Wings more yellowish, without 

 costal swelling. Squamular fringe with some black hairs. 



Leiigth 5,5—6,5 mm. 



The fullgrown larva has a length of 13 mm, the pupa of 7 mm; 

 the latter has the sheaths of the legs reaching to the end of the fifth 

 abdominal segment. 



