404 



Syrphidae. 



— 1822. Meig. Syst. Beschr. III, 404, 3. — 1843. Zett. Dipt. Scand. II, 

 651, 4 et 1859. XIII, 5078, 4. — 1862. Schin. F. A. I, 329. — 1901. Verr. 

 Brit. FL VIII, 490, 4, figs. 338—340. — 1907. Kat. palåarkt. Dipt. III, 94. 



Male. Vertex brown, darkened at the ocelli; frons and epistoma 

 brownish yellow, the latter a little pruinose below the antennæ ; jowls 

 black; epistoma hoUowed below the antennæ, with a large central 

 knob in the middle and below it somewhat retreating, the knob 

 therefore more protruding than in bomdylans, but the epistoma pro- 

 duced much less downwards than in this species and also less for- 

 wards. Vertex and frons with black hairs ; epistoma less densely haired 

 than in hombylans, the hairs black, yellow at the sides below, some- 

 times all or almost all yellow. Eyes touching for a long space, with 

 dense, black hairs, shorter downwards and the eyes are bare on the 

 hinder lower part. Occiput black, greyish pruinose, with yellow hairs, 

 somewhat long below. Antennæ red, third joint about twice as long 



Fig. 151. Antenna of V. 2)ellucens <J, from the outside. X 45. 



as broad; arista black on the outer part, long black plumose, the 

 hairs longest above. Thorax black or slightly bluish black, shining, 

 brownish on the humeri and dark ferruginous at the side margins; it 

 is clothed with not long, black hairs; there are strong notopleural, 

 supraalar and postalar bristles, and a row of weaker bristles at the 

 hind margin. Scutellum brown or blackish brown, with short, black 

 hairs and long marginal bristles. Pleura with longish hairs and with 



