150 Orthorrhapha brachycera. 



greenish or æneous, grey pruinose; propleura with a few pale hairs 

 and a black prothoracic bristle. Abdomen green, æneous or coppery, 

 slightly whitish grey pruinose downwards, without, or with very in- 

 distinct, dark hindmargins lo the segments; it is clothed with short, 

 black hairs, and has shortish hindmarginal bristles, very slightly longer 

 on the first segment. Venter greyish, slightly pale-haired. Hypopygium 

 somewhat large, black or blackish, greyish pruinose; eighth segment 

 with black hairs; there are slightly projecting posterior ventral lobes, 

 with a styliform point at the upper apical corner; the inner lamellæ 

 curved downwards, the median thin, but high at the base, the lateral 

 dilated, with a dilatation at the apex; the outer lamellæ small and 

 narrow; they are yellowish or brownish, with a blackish margin all 

 round, which is broad at the end; the end has some teeth with black, 

 curved hairs, and dorsally to them a pair of curved hairs; the ven- 

 tral margin is serrated, with somewhat long hairs, and on the inner 

 side inwards curved hairs. Legs yellowish, coxæ grey, generally 

 a little reddish at the apex; the femora somewhat darkened, especi- 

 ally the front femora are more or less brownish on the basal 

 part, and Ihe hind femora at the apex; anterior tarsi with the apical 

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

 black at the apex; they have a small swelling above the middle on 

 the posterior side, the swelling is bare and has a slight, longitudinal 

 groove; the hind tarsi are black. The legs have short, black hairs, 

 hind femora a little longer hairs above towards the base, and are in- 

 conspicuously pale-haired below; the posterior femora with one pre- 

 apical bristle; front tibiæ with few bristles above, and generally one 

 on the postero-ventral side ; middle tibiæ with about five to six 

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

 dorsal, and one ventral bristle below the middle; hind tibiæ with two 

 dorsal rows of bristles, one ventral bristle towards the apex, and a 

 ventral row of small bristles; hind metatarsi with three or four dorsal 

 bristles, some anterior, and with small ventral bristles. Wings very 

 slightly tinged; veins black or brownish black, costa with a small 

 swelling; discai vein with a very small, quite obtuse bend; axillary 

 lobe well developed, anal vein going somewhat downwards. Squamulæ 

 yellow, with a black fringe. Halteres yellow. 



Female. Vertex and frons still more dusted than in the male, 

 quite brownish. Epistoma broad, grey. Antennæ shorter than in the 

 male, third joint about as long as broad, more pointed. Hind tibiæ 

 simple. Wings more brownish than in the male, costa without 

 swelling. 



Length 3,6 to fully 4 mm. 



