Dolichopodidae. WJ 



Length 4 to fully 5 mm. 



This species is in tlie male easily distinguished, as it is the only 

 species with more than one ventral bristle on the middle tibiæ, a 

 bristle on the middle metatarsi and quite simple tarsi; the female 

 is very similar to the female of festivus and ciliefemoratus, but it may, 

 I think, be known by the almost quite white-halred front coxæ, the 

 paler and more pale-haired legs, and from festivus also by the gener- 

 ally quite yellow hind tibiæ; besides it has some yellow hairs at the 

 sides of abdomen. 



D. arhustorum is very rare in Denmark, only two specimens, 

 both females, have been taken at Svenstrup between Roskilde and 

 Ringsted (H. J. Hansen). According to Verrall it prefers dry localities. 



Geographical distribution : — Northern and middle Europe down 

 into Austria, Bohemia and Hungary; it seems to have its northern 

 limit in Denmark, and it occurs also in England. 



29. D. nitidus Fall. 



1823. Fall. Dipt. Suec. Dol. 12, 9. — 1824. Meig. Syst. Beschr. IV, 

 80, 12. — 1843. Zett. Dipt. Scand. II, 558, 49, et 1859. XIII, 5054, 49. 



— 1862. Schin. F. A. I, 218. — 1903. Kat. palåarkt. Dipt. II, 301. — 

 Dolichopus nitens Stann. 1831. Isis 1831, 48, 3. — Dolichopus ornatus 

 Meig. 1824. Syst. Beschr. IV, 79,11. — 1831. Stann. Isis 1831,46,2. — 



— 1842. Stæg. Krøyer's Tidsskr. IV, 14, 3. — Dolichopus jucundus Hal. 

 1833. Ent. Mag. I, 163. — Dolichopus coeruleicollis Meig. 1838. Syst. Beschr. 

 VII, 160, 55. 



Male. Vertex and frons green, sometimes bluish green. Epistoma 

 somewhat narrow, greyish white. Palpi yellow. Occiput green, greyish 

 pruinose; postocular bristles whitish below, black above. Antennæ 



Fig. 31. Antenna of D. nitidus cf, from the inside. X 65. 



not as long as the head, third joint triangular, short, not longer than 

 broad ; the basal joints are yellow, sometimes slightly darkened above, 

 third joint blackish, yellow beneath at the base. Thorax green or 

 slightly golden green, sometimes more bluish; it is slightly pruinose, 

 shining; scutellum fmely yellow pubescent; postscutellum green, greyish 

 pruinose. Pleura greenish or æneous, grey pruinose; propleura with 

 fine, pale hairs and a black prothoracic bristle. Abdomen green, 



