148 Orthorrhapha brachycera. 



44. D. longitarsis Stann. 



1831. Stann. Isis 1831, 124, 19. — 1862. Schin. F. A. I, 223. — 

 1903. Kat. palåarkt. Dipt. II, 300. — DoUchopus cinctus Stæg. 1842. Krøyer's 

 Tidsskr. IV, 24, 14. — DoUchopus equestris Hal. 1831. Zool. Journ. V, 

 359, 4. — 1862. Schin. F. A. I, 221. — DoUchopus Staegeri Zett. 1843. 

 Dipt. Scand. II, 508, 7, et 1852. XI, 4277, 7, et 1859. XIII, 5041, 7. 



Male. Vertex and frons green. Epistoma narrow, white, distinctly 

 pubescent. Palpi black. Occiput green, greyish pruinose; postocular 

 bristles black. Antennæ not as long as the head, black, the third 

 joint not longer than broad, triangular, Thorax green, sometimes 

 slightly æneous, a little pruinose, shining; scutelliim finely yellow 

 pubescent; postscutellum green, grey pruinose. Pleura green, grey 

 pruinose; propleura with fine, pale hairs and a black prothoracic 

 bristle. Abdomen green, with more or less pronounced golden or 

 coppery reflexes, and with broad, blackish incisures; it is slightly 

 whitish pruinose downwards and is clothed with short, black hairs; 

 there are somewhat long hindrnarginal bristles, which are not longer 

 on the first segment. Venter grey pruinose, slightly pale-haired. Hypo- 

 pygium æneous black, greyish pruinose; eighth segment with black 

 hairs; there are slightly projecting, brown posterior ventral lobes, 

 with the upper apical corner forming a little point and bearing a 

 small, curved bristle or spine; the inner lamellæ curved downwards, 

 the median a little dilated at the base, thin towards the apex, the 

 lateral dilated, with a dilatation at the apex, and a small spine at 

 the upper margin; the outer lamellæ somewhat short and roundish, 

 whitish with a not quite narrow, blackish margin along the ventral, 

 apical and outer part of the dorsal edge; at the end there are a few 

 teeth with curved, black hairs, and dorsally to them a pair of curved 

 hairs; the ventral margin has shorter, dense hairs, and on the inside 

 inwards curved hairs. Legs yellow, front coxæ with the basal half, 

 or more, grey, whitish pruinose anteriorly; posterior coxæ grey, yellow 

 at the very apex; the anterior tarsi are somewhat long and thin, 

 longer than the tibiæ, the apex of metatarsus and the four foUowing 

 joints black, the front tarsi have the last joint a little compressed 

 and slightly dilated; the hind fernora are a little darkened above at 

 the apex, hind tibiæ slightly compressed, somewhat thickened, most 

 towards the apex; the apical third is black; hind tarsi black, meta- 

 tarsus a little thickened, most towards the base, the other joints thin. 

 The legs have short, black hairs, hind femora a little longer hairs 

 above towards the base, and short, pale hairs below, and here 

 besides a fringe of long, black cilia in the apical half; posterior 

 femora with one preapical bristle; front tibiæ with bristles above and 



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