52 Orthorrhapha brachycera. 



Thorax dark grey, dull, with three blackish brown stripes, the median 

 narrow and indistinct, Dorsocentral and acrostichal bristles long, 

 black; the former strong behind, biserial, the latter uniserial. Further 

 a humeral bristle, a posthumeral, about three notopleural, two supraalar 

 and a postalar bristle, all black; besides there are some finer hairs 

 on and behind the humeri. Scutellum with four black marginal 

 bristles. Pleura grey, metapleura with black hairs. Abdomen dark 

 grey, dull, with black hairs which are longest in front at the sides; 

 the hind margin of the segments grey. Venter grey with very sparse, 

 black hairs. Exterior genitalia moderately large, the lower lateral 

 lamellæ broad, somewhat triangular with rounded apex; they are 



black, slightly greyish pruinose, and with 

 dense, brownish black hairs at the margin; 

 the upper lateral lamellæ styliform, slightly 

 curved at the base; penis thread-like, fer- 

 ruginous, somewhat thickened at the base; 

 the eighth ventral segment arched, with long, 

 black hairs at the margin. Legs black; coxæ 

 greyish pruinose; the hind legs somewhat 



„. ,^. „, „ . long, hind femora cylindrical, hind metatarsi 



Fig. 16. Bh.conformis, ®' -' ,.,•,,, 



male "enitalia. ^^^ ^^ ^^1 swollen, scarcely as thick as the 



end of the tibiæ; front femora with fine 

 hairs below towards the anterior and posterior sides, and with slightly 

 longer hairs on the antero-dorsal side ; middle femora with two rows 

 of stronger hairs below and likewise with an antero-dorsal row; hind 

 femora mainly short-haired, only with some longer hairs on the 

 posterior side; the posterior femora witli a very dense and short, 

 whitish pubescence below, most distinct on the otherwise somewhat 

 bare hind femora; front tibiæ with short hairs and some bristles 

 dorsally and with a dense, short pubescence ventrally; middle tibiæ 

 with rather strong bristles in several rows, especially on the dorsal 

 and ventral sides; hind tibiæ with some bristles dorsally in two rows, 

 and short hairs, among which a few longer, ventrally. Tarsi short- 

 haired, the posterior somewhat spinulous beneath; hind metatarsi with 

 a few bristles above. The hairs and bristles are mainly black or 

 dark brownish. Wings very slightly yellowish tinged, most towards 

 the anterior margin. Veins brown; anal vein not thin, reaching the 

 margin. Stigma distinct, brownish. Balteres pale yellow. 



Female. I do not know the female, but according to Kowarz 

 it quite resembles the male; frons broad, whitish grey; legs as in the 

 male; the wing-veins a little stronger. 

 Length about 6,5 mm. 



