Dolichopodidae. 225 



1. D. oculatus Fall. 



1823. Fall. Dipt. Suec. Dol. 28,22 (DoUcJiopus). — 1830. Meig. Syst. 

 Beschr. VI, 360. — 1843. Zett. Dipt. Scand. II, 491, 1, et 1855. XII, 4621, 1. 

 — 1862. Schin. F. A. I, 187. — 1903. Kat. palåarkt. Dipt. II, 322. — 

 Diaphora himaculata Macq. 1827. Soc. Se. Lille, 1827, 22, 2, et 1834. 

 Suit. å Buff. I, 448, 2, Tab. X, fig. 22. — Diaphorus himaculatus 1838. 

 Meig. Syst. Beschr. VII, 148, 7. — Diaphorus flavocinctus Meig. 1824. Syst. 

 Beschr. IV. 33, 1 , Tab. XXXIV, Fig. 8. 



Male. Vertex black, frontal triangle grey; eyes very approx- 

 imated or touching for a short distance on the niiddle of the frons. 

 Epistoma broad, grey. Palpi small, yellow. Occiput grey; postocular 



Fig. 72. Antenna of D. oculatus c?, from the inside. X 100. 



bristles black above, yellowish below. Antennæ black or brownish 

 black, third joint short, rounded anteriorly; arista distinctly dorsal. 

 Thorax green or æneous, strongly grey pruinose, aimost not or only 

 slightly shining. Pleura grey or dark grey. Abdomen black, slightly 

 æneous, the second, and generally a smaller or larger part of the 

 third segment yellow; the hind margin of the second segment nar- 

 rowly black; abdomen clothed with short, black hairs, longer at the 

 sides, and it has somewhat long hindmarginal bristles, longest on the 

 first segment; the eighth segment has fom' long and strong bristles. 

 The venter has the three basal segments yellow, the others dark, and 

 it has somewhat long, blackish hairs, longest at the hind margins. 

 Legs with the coxæ grey, front coxæ pale grey anteriorly^ and with 

 the apex and the trochanters yellow ; the apex of the posterior coxæ 

 and the trochanters may be brownish; femora brownish black, anterior 

 femora with the apical third or half yellow, sometimes only below; 

 tibiæ yellow, hind tibiæ brownish black at the apical part; anterior 

 tarsi with apex of metatarsus and the four following joints brownish, 

 hind tarsi quite brownish black. The legs have short, black hairs, 

 front femora with long, somewhat bristly hairs below ; middle femora 

 with short hairs and hind femora with long hairs below at the slightly 

 elevated apical part; front tibiæ with a few, small bristles above and 

 short hairs below; middle tibiæ with a distinct antero-dorsal bristle 

 near the base, two small postero-dorsal, and one ventral bristle below 



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