302 



Orthorrhapha brachycera. 



Length 3 — 3,6 mm ; it is recorded to be rather varying in size. 



S. adpropinquans is very rare in Denmark, only one specimen is 

 known, a female, which was bred by Mr. Schlick from a decaying tree 

 in Dyrehaven in August 1882. 



Geographical distribution : — Northern and middle Europe down 

 into France; it is not known north of Denmark, but occurs in England. 



2. S. leucurus Loew. 



1859. Loew, Neue Beitr. VI, U, 2. - 1862. Schin. F. A. I, 201. - 

 1 903. Kat. palåarkt. Dipt. II, 336. . 



Male. Vertex and frons green, somewhat brownish pruinose. 

 Epistoma somewhat narrow, greenish, grey pruinose, (according to 

 Loew blackish blue shining below). Palpi large, brownish yellow. 

 Occiput greenish grey; postocular bristles pale. Antennæ black or 



Fig. 94. Antenna of S. letimirns d". X 85. From a dried object. 



blackish brown, long, the third joint elongated, lancet-shaped, the apex 

 attenuated and pointed; arista short, not half as long as the third 

 joint. Thorax green or bluish green, greyish pruinose, slightly shining; 

 scutellum somewhat brighter. Pleura green, a little greyish pruinose, 

 especially behind ; propleural hairs pale. Abdomen green, clothed with 

 short, black hairs; there are very short hindmarginal bristles, long at 

 the first segment. Venter greenish grey. Hypopygium thick, white, 

 the peduncle (seventh segment) thin and short, dirtiiy brownish; ventral 

 lobes thin and short, somewhat hook-like, with the apex curved down- 

 wards; the outer lamellæ short, dilated at the apex, white with the 

 apex black; they are hairy at the margin. Legs pale yellow, coxæ 

 a little brownish at the base; hind femora more or less dark at the 

 apex above; hind tibiæ somewhat brownish, all tarsi more or less 

 dark towards the apex; anterior metatarsi almost as long as the two 

 following joints, hind metatarsus not half as long as the second joint. 

 Legs with short, blackish hairs, below the femora pale; coxæ pale- 

 haired, anterior coxæ with some pale, bristly hairs at the apex, hind 

 coxæ with a pale bristle on the outer side; front tibiæ without bristles, 

 middle tibiæ with two antero- and two postero-dorsal bristies, one 

 pair near the base the other in the middle; hind tibiæ with a dorsal 



