. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 148 Orthorrhapha brachycera. 22. Acrostichal bristles more than biseiial; front metatarsi in the male thickened 23. â Acrostichal bristles biserial; front metatarsi in the male simple 24. 23. Thorax grey; halteres yellow 21. gallica. â Thorax blackish grey; halteres with yellow peduncle and dark knob 22. lurida. 24. Thorax grey with two stripes; halteres yellow; eyes in the male narrowly separated 24. cinguJata. â Thorax black, shining; halteres dark (or yellow in the female); eyes in the male contiguous 25. fiav
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 148 Orthorrhapha brachycera. 22. Acrostichal bristles more than biseiial; front metatarsi in the male thickened 23. â Acrostichal bristles biserial; front metatarsi in the male simple 24. 23. Thorax grey; halteres yellow 21. gallica. â Thorax blackish grey; halteres with yellow peduncle and dark knob 22. lurida. 24. Thorax grey with two stripes; halteres yellow; eyes in the male narrowly separated 24. cinguJata. â Thorax black, shining; halteres dark (or yellow in the female); eyes in the male contiguous 25. fiavipes. 25. Thorax grey, with one stripe or unstriped; acrostichal bristles quadriserial 20. litorea. â Thorax blackish brown; acrostichal bristles biserial. 23. lasiopyga. In the table I have placed H. aeronetha in the group with yellow halteres; according to Mik and Strobl this species may vary with dark halteres. 1. H. cornicula Loew. 1873. Loew. Berl. ent. Zeitschr. XVII, 42, 31. â 1892. Strobl, Verb, zool. hot. GeseU. Wien, XLII. 105, 1. â 1903. Kat. palaarkt. Dipt. II, 250. Male. Vertex and frons velvet black, the latter shining in the middle; epistoma more greyish; palpi brownish with brown hairs. Occiput dull black, with blackish, downwards with pale hairs. Antennae black. Thorax black, shining. The dorsocentral and acrostichal bristles of some length, black or blackish, the former uniserial, and long behind, the latter quadriserial but just in front bi- to triserial. Further a humeral bristle, a posthumeral, about three notopleural, a supraalar and a postalar bristle, all black. Scutellum with four black marginal bristles, the inner strongest. Pleura grey pruinose. Abdomen black, shining, with black hairs; at the hind margin of the segments longer, bristly hairs. Venter similarly coloured and haired. Exterior genitalia somewhat large, compressed, with a little longer hairs above. Legs black or blackish; coxae grey pruinose. The femora, especially the hind femora, w
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
