Diptera danica : genera and species of flies hitherto found in Denmark . nitalia large, greyish or yellowish pruinose, yellowish, darker and greyish at base and apex and generallyalong the middle, with long, pale hairs; the terminal appendages ofthe genitalia reddish, densely haired at the apex and front about as in lunulatus and transfugus but anterior femora blackall round on the basal half though often a little pale at the base; theapical third of front tibiæ black and generally a distinct ring beforethe apex on middle tibiæ; the upper rings on tibiæ faint o
Diptera danica : genera and species of flies hitherto found in Denmark . nitalia large, greyish or yellowish pruinose, yellowish, darker and greyish at base and apex and generallyalong the middle, with long, pale hairs; the terminal appendages ofthe genitalia reddish, densely haired at the apex and front about as in lunulatus and transfugus but anterior femora blackall round on the basal half though often a little pale at the base; theapical third of front tibiæ black and generally a distinct ring beforethe apex on middle tibiæ; the upper rings on tibiæ faint or nearlywanting; hind legs quite as in the two preceding species, and likewisevery varying as to the extent of the black colour on femora, thiscolour often present only as a black blotch above in the middlestretching down on the sides; hind femora simple but much quite or mainly pale-haired, there may be some black hairsbehind the anterior femora towards the apex, and the hind femoraare black setulose below in the apical half. Wings somewhat strongly. Fig. 158. Wing of H. lineatus d. brownish™ tinged, sometimes less; cubital vein with a rather shallowloop, and anal vein only slightly dipped down. Stigma consisting onlyof the cross-vein and it is weak. Squamulæ whitish with a yellowfringe. Halteres pale yellow. Female. Vertex and frons broader than in the male, and ratherbroad, slightly widening downwards; vertex blackish, frons brownishpruinose, the hairs black. The middle lines on thorax generally broaderthan in the male, often widening inwardly behind and almost or quiteunited. The flrst abdominal segment with a large, grey lunule wideningat the sides so that it leaves a black, semicircular spot at each sideat the hind margin; the abdominal spots on second and third seg-ments with the side parts smaller than in the male but stretchinginwards as rather large, greyish or greyish yellow lunules, while the Helophilus. 467 lunules on fourth segment are narrowe
Size: 2639px × 947px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
