Diptera danica : genera and species of flies hitherto found in Denmark . wn-wards, behind the mouth aperture, the hairs are white. Antennaeblack, the first joint with black hairs. Thorax densely clothed witherect, bright yellow to pale yellow hairs. Sterna and pleura likewisewith long, yellow hairs; metapleura with a vertical tuft of speciallylong hairs; postalar and scutellar marginal bristles yellow. Abdomenclothed with long, erect hairs of the same colour as on thorax; thehairs are arranged on the segments in such a way, that they tosome degree form transverse rows; there are long, more or
Diptera danica : genera and species of flies hitherto found in Denmark . wn-wards, behind the mouth aperture, the hairs are white. Antennaeblack, the first joint with black hairs. Thorax densely clothed witherect, bright yellow to pale yellow hairs. Sterna and pleura likewisewith long, yellow hairs; metapleura with a vertical tuft of speciallylong hairs; postalar and scutellar marginal bristles yellow. Abdomenclothed with long, erect hairs of the same colour as on thorax; thehairs are arranged on the segments in such a way, that they tosome degree form transverse rows; there are long, more or lessdistinctly visible bristles at the hind margin of the segments; thesebristles may be blackish or brownish, but they are most often yellow,though darker than the hairs. Venter with long, yellow hairs. Legsblackish or sometimes dark brownish, the outermost base of thefemora and the basal part of the tibiae often lighter to yellowish; thebristles chiefly black, more or less yellow on the hind femora; thefemora somewhat yellowish haired below towards the base, the de-. Fig. 42. Wing of S. sulphureus. pressed hairs yellowish. The number of bristles on the ventral sideof the hind femora 3 to 5 and on the antero-ventral side of the hindtibiae 3 to 4. Wings somewhat greyish, slightly brownish towards 128 Orthorrhapha brachycera. the anterior margin; veins brown; costa at the base with blackspinules in the margin and yellow haired above. Squamulae lightbrownish with a yellow fringe at the margin. Halteres brownishwith the knob white or yellowish white. Female. Agreeing with the male but the frons broad; the legsgenerally lighter. Length 4—6,5 mm. Remarks: The bristles at the hind margin of the abdominalsegments are generally described as black; in all the Danish specimensI have seen they are nearly always yellow to light brownish. S. sulphureus is common in Denmark in suitable localities; Tis-vilde, Rorvig; on Funen at Faaborg; in Jutland at Villebolle north ofRibe, Silkeborg, Kan
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
