. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. 240 Orthorrhapha brachycera. Dipt. Scand. I, 324, 1 (Ardoptera). — 1862 Schin. F. A. I, 85. (Ardoptera). — 1903. Kat. palåarkt. Dipt. II, 270. Male. Frons grey with two darker impressions; vertex grey, the ocellar triangle brown, and this colour prolonged triangularly back- wards. Epistoma light grey; palpi black. Occiput grey with black bristles above, short, whitish hairs below. Antennæ black. Thorax æneous brown, somewhat shining, with a whitish grey middle line, which is narrowest in the middle an
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. 240 Orthorrhapha brachycera. Dipt. Scand. I, 324, 1 (Ardoptera). — 1862 Schin. F. A. I, 85. (Ardoptera). — 1903. Kat. palåarkt. Dipt. II, 270. Male. Frons grey with two darker impressions; vertex grey, the ocellar triangle brown, and this colour prolonged triangularly back- wards. Epistoma light grey; palpi black. Occiput grey with black bristles above, short, whitish hairs below. Antennæ black. Thorax æneous brown, somewhat shining, with a whitish grey middle line, which is narrowest in the middle and here sometimes interrupted; also the lateral margin is somewhat whitish grey. Dorsocentral bristles long, black. Further a humeral bristle, a posthumeral, a noto- pleural and a postalar bristle, all black. Scutellum with two black marginal bristles. Pleura grey pruinose. Abdomen black, shining, slightly æneous, with short, pale hairs. Venter black. Legs reddish brown, posterior coxæ grey pruinose, the extreme apex of the tibiæ and the tarsi towards the end dark brown or blackish. The legs short-haired with brownish hairs. Wings brown with a number. Fig. 105. Wing of D. irrorata. (about twenty) of hyaline spots, and with the base yellowish; some of the spots may be indistinct or confluent, and the number is therefore not quite constant, but there are six along the anterior margin. Veins black or blackish brown, the radial and cubital veins somewhat undulated. No stigma. Halteres yellow or reddish yellow. Female. Quite similar to the male with exception of the differen- ces in the exterior genitalia. Length 2—3 mm. D. irrorata is somewhat common in Denmark; Lersøen at Co- penhagen, Damhussøen, Ruderhegn, Frerslev Hegn; on Langeland at Lohals, and in Jutland at Hald near Viborg. My dates are "^^/e—^Vo. It occurs on shaded, humid piaces in woods, in fens and at the hor- ders of water. Geographical distribution: — Northern and middle Europe down into France;
Size: 2627px × 952px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
