. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. go Orthorrhapha brachycera. segments are paler. Venter grey, but often pale yellowish or brownish to a higher degree than the dorsal side; abdomen is densely clothed with black or brownish hairs, somewhat long and erect at the sides; the hairs at the hind margins are not stronger than the others; venter somewhat sparingly haired. The exterior genitalia are large and curious, I interpret the structure in the following way: the sixth ventral segment is turned downwards so that its hind margin points down, the somew
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. go Orthorrhapha brachycera. segments are paler. Venter grey, but often pale yellowish or brownish to a higher degree than the dorsal side; abdomen is densely clothed with black or brownish hairs, somewhat long and erect at the sides; the hairs at the hind margins are not stronger than the others; venter somewhat sparingly haired. The exterior genitalia are large and curious, I interpret the structure in the following way: the sixth ventral segment is turned downwards so that its hind margin points down, the somewhat large seventh segment is turned in the same way, its downwards pointing hind margin is arched, and its ventral side, which points forwards, is black and shining; the somewhat folded connecting mem- brane between the seventh and eighth ventral segment is distinctly seen; the eighth ventral segment is very large. Fig. 18. Rh. plumipes, somewhat elongated, arched and with male genitalia. the sides and the hind margin curved upwards; it has somewhat long hairs at the hind margin; the lower lamellae are somewhat small, not stretch- ing beyond the apex of the eighth ventral segment and somewhat hidden in it; the upper lamellae seem to be small and styliform, but they are only indistinctly seen. Penis is hidden, only the upper, thread-shaped end may sometimes be seen between the lamellae. Legs black or brownish, the knees more or less pale, which is most distinct when the legs are black; coxae greyish pruinose. The anterior femora have some fine hairs below; the middle femora have an antero- and postero-ventral row of longer hairs, and besides an antero- dorsal row; the hind femora have a dorsal row of short hairs and on the basal half very long dorsal hairs, on the ventral side they have a very dense and short, pale pubescence which is not observable on the middle femora. Front tibiae short-haired and only with a single subapical bristle; middle tibiae with some bristles on the d
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
