Ernestia. 487 



somewhat sparse, whitish hairs. Antennæ black, second joint a little 

 reddish at apex, third rather broad; arista thickened in basal half, 

 but evenly tapering. Palpi brownish or blackish. Thorax bluish 

 black, somewhat bluish grej pruinose, with four black stripes, the 

 median narrow and abbreviated behind ; scutellum black. Thorax 

 black-haired ; scutellum with a pair of erect præapical and a pair ot 

 discai bristles. Abdomen bluish black, shining, the three last segments 



Fig. 103. Wing of K. marginata. 



With a somewhat narrow, bluish white pruinose front band, leaving 

 about the hinder two thirds black; also a middle stripe more or less 

 visible. Abdomen with black hairs; second segment with a pair of 

 marginal bristles, third with a pair of discai and marginal and fourth 

 with a pair of discai and a row of marginal; sometimes supplementary 

 discai bristles present; fifth segment with two row of bristles and a 

 distant pair of discals. Legs black. Wings brownish or yellowish 

 brown tinged; veins brown; discai angle obtuse, without or with 

 only a minute veinlet; apical cross- vein concave. Squamulæ whitish. 

 Halteres blackish brown. 



Female. I do not know the female. 



Length 7,5 — 9,5 mm. 



K. marginata is very rare in Denmark, I know only one spec- 

 imen, a male, from the vicinity of Copenhagen; it is bred but the host 

 unknown, it developed in May (C. Larsen). 



Geographical distribution: — Europe; towards the north to 

 middle Scandinavia and Finland. 



II. Protachininae. 



116. Bpnestia R. D. 



Species of medium to somewhat large size, of blackish colours, 

 generally with more or less distinct, otten disappearing red patches 

 on the sides of abdomen in the male. Head as broad as or a little 



