102 Orthorrhapha brachycera. 



bristles short and thin, biserial, whilish ; the hinder dorsocentral bristles 

 longer and uniserial. Further a notopleural and a postalar bristle, 

 but the former is only slightly pronounced between the hairs which 

 clothe the sides of thorax. Scutellum has two yellow marginal 

 bristles. Pleura greyish pruinose, metapleura with long, bristly, 

 whitish hairs; propleura with some inconspicuous hairs. Abdomen 

 black, shining, somewhat densely clothed with yellow hairs, which 

 are long and erect at the base, short towards the apex. Venter 

 similarly coloured and sparingly haired. Exterior genitalia small, the 

 lower lamellæ broad, somewhat shovel-like, with longish hairs at the 

 hind margin; the upper lamellæ are almost quite hidden. Penis is 

 somewhat thick, ferruginous, curved upwards between the lamellæ and 

 thin at the apex. Legs slender, the hind legs elongated, the tibiæ 

 thickened at the apex, club-shaped, hind metatarsi thickened. The 

 legs are yellow, coxæ greyish pruinose, the anterior tibiæ brown to- 

 wards the apex and the tarsi brown, the apex of the hind tibiæ and 

 the tarsi black or blackish brown; also the apex of the hind femora 

 narrowly brown. The front tibiæ and tarsi with longish hairs on 

 the dorsal side; the middle femora with long hairs on the dorsal and 

 ventral side at the base, the hairs being short towards the apex, the 

 tibiæ with very long, fan-like, erect and bristly hairs on the dorsal 

 and ventral side, and similar hairs on the first tarsal joints; hind 

 femora with long hairs below and some bristles on the antero-dorsal 

 side, tibiæ with some bristly hairs, especially on the dorsal and ven- 

 tral side. All hairs are whitish or yellowish white. Besides, there is 

 the ordinary clothing of short hairs. Wings somewhat yellowish tinged; 

 veins brown, anal vein reaching the margin but very thin towards 

 the apex. Stigma brownish. Balteres pale yellow. 



Female. Similar to the male, but the eyes narrowly separated, 

 the frons black, shining. Abdomen shorter haired. The hind legs a 

 little less thickened and all the legs simply haired, the hind tibiæ with 

 short bristles dorsally. 



Length 4 — 5 mm. 



E. nigritarsis seems to be very rare in Denmark, and it has first 

 been detected in 1909 when two specimens, both females, were taken 

 on the little island Egholm at Skelskør on ^^h (Th. Mortensen). 



Geographical distribution : — Middle Europe down into Italy ; it 

 has its northern limit in Denmark; it also occurs in England. 



V. Subg. Coptophlebia Bezzi. 

 Small, black or greyish species. Eyes contiguous in the male, with the 

 upper facets larger than the lower, separated in the female. Antennæ 



