366 Orthorrhapha brachycera. 



Abdomen greenish or æneous, with coppery or violet reflexes above, 

 slightly pruinose; it is clothed with short, black hairs, and has short 

 hindmarginal bristles at the sides, long on the first segment. Venter 

 greyish, with pale hairs. Legs yellow, posterior coxæ grey, tarsi, 

 except the basal part of metatarsus, blackish or dark brown. The 

 legs have short, black hairs; coxæ pale-haired, front coxæ with some 

 black bristles at the apex, posterior coxæ each with a black bristle; 

 front femora slightly thickened at the base, for the rest the front legs 

 simple, the femora with longish hairs below on the basal part, tibiæ 

 with a dorsal and a postero-ventral bristle; middle femora somewhat 

 thickened on the basal part, with short, dense bristles below in more 

 than one row; they are very short at the apex, and here only in one 

 row; middle tibiæ with a postero-ventral row of long, truncate, not 

 pointed bristles, and with rows of short bristles on the antero-ventral 

 and anterior sides, fm'ther with three antero-dorsal and one postero- 

 dorsal bristle; middle metatarsus simple, about as long as the next 

 two joints; hind femora with a preapical bristle; hind tibiæ with two 



Fig. 113. Wing of C. armatus <^. 



rows of dorsal bristles, and two ventral bristles; hind metatarsus as 

 long as the second joint. Wings brownish tinged; veins blackish, the 

 last part of the discai vein without or almost without darkening on 

 the convexity; posterior cross-vein about in the middle, the part of 

 the discai vein from the small to the posterior cross-vein shorter than 

 the second part. Squamulæ yellow, with a black fringe. Halteres yellow. 



Female. Epistoma slightly broader than in the male, grey or 

 dark grey above, whitish yellow below. Antennæ with the third joint 

 shorter. Legs simple, middle tibiæ besides the dorsal bristles with 

 two ventral bristles. 



Length 2 — 2,3 mm. 



As said above the female of this species is somewhat dificult to 

 distinguish from that of loripes; it has, I think, thorax a little more 

 pruinose, and the darkening on the convexity of the discai vein almost 

 or quite wanting; but the best character is that the hind metatarsus 



