. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 207 bristle, all yellow; besides there niay be some smaller hairs. Scutellum with eight to ten pale yellow marginal bristles. Pleura black, very slightly pruinose. Abdomen black, shining, sometimes a little trans- lucently brownish; it is clothed with long, pale yellowish hairs, which are a little longer at the hind margin of the segments. Venter similarly coloured, a little shorter haired. Genitalia not large and not swollen. Legs pale yellow; the coxæ, especially the posterior some- what
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 207 bristle, all yellow; besides there niay be some smaller hairs. Scutellum with eight to ten pale yellow marginal bristles. Pleura black, very slightly pruinose. Abdomen black, shining, sometimes a little trans- lucently brownish; it is clothed with long, pale yellowish hairs, which are a little longer at the hind margin of the segments. Venter similarly coloured, a little shorter haired. Genitalia not large and not swollen. Legs pale yellow; the coxæ, especially the posterior some- what darkened, hind femora a little brownish, hind tibiæ and tarsi brown, the tibiæ paler towards the base, anterior tarsi brownish, pale at the base. Hind tibiæ somewhat thickened towards the apex, and the metatarsi slightly thickened. The legs are densely and longish haired, especially above and below, the hairs below the femora are vertically erect; the middle femora have some bristles on the antero- dorsal side, the middle tibiæ two rows of long bristles on the dorsal. Fig. 84. Wing of L. flnvipes. side (with about three bristles in each row); the hind tibiæ have some bristles on the dorsal side towards the apex. The hairs and bristles are yellow to pale brownish. Wings slightly yellowish tinged. Veins brown, No stigma present. Halteres yellow. Female. Differing from the male in colour; thorax yellow or reddish yellow; abdomen yellow, but with broad, transverse, black spots on the segments, so that it has only narrow, pale incisures, or the spots quite confluent apd abdomen black, only with some triangular lateral yellow spots; venter more or less pale. Ovipositor long, com- pressed, curved upwards and sword-like. Legs as in the male or a little paler. Length 4—5 mm. is very rare in Denmark and has only been taken a few times many years ago, by Stæger in Charlottenlund. It occurred in the middle of June, and was taken on Corylus avellana. Geographical distrib
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
