Diptera danica : genera and species of flies hitherto found in Denmark . and more erect than the black; the hairs at the side marginare somewhat long, longest at the basal corners; they are yellow,though black just inwards on the black parts. Genitalia red, verylarge, with large, unsymmetrical appendages. Venter black, shining,with transverse, yellow side spots on second, third and fourth segmentstowards the front margins and with yellow hind margins to the seg-ments; the side spots are in shape just reversed to the dorsal bands,as they have a concave margin in front and a convex behind; theha
Diptera danica : genera and species of flies hitherto found in Denmark . and more erect than the black; the hairs at the side marginare somewhat long, longest at the basal corners; they are yellow,though black just inwards on the black parts. Genitalia red, verylarge, with large, unsymmetrical appendages. Venter black, shining,with transverse, yellow side spots on second, third and fourth segmentstowards the front margins and with yellow hind margins to the seg-ments; the side spots are in shape just reversed to the dorsal bands,as they have a concave margin in front and a convex behind; thehairs on venter long, yellow. Legs yellow, the femora more reddish,with the basal part or basal half black; the anterior tibiæ and thebasal part of the hind tibiæ of a beautiful pale or canary yellowcolour; the legs are haired in the usual way; the short hairs on theanterior side of middle and hind femora more or less black, for therest the hairs yellow or some black hairs behind the apical part ofthe anterior femora. Wings a little tinged, more strongly and brownish. Fig. 193. Wing of C. cautuni c?. yellow towards the anterior margin; cubital vein with a slight æ whitish yellow with a yellow margin and fringe. Balteresyellow. Female. Vertex and frons broad, very widening downwards,black, the frons with two large, grey dust spots; the hairs paler than in the male, the anterior femora black only at thebase, hind femora quite yellow or black only at the extreme base. Length 12—14 mm. C. cautum is common in Denmark; Amager, Ermelund, Hareskov,Geel Skov, Søllerød, Hillerød, Tyvekrog, Tisvilde, at Sorø; on Lolland 572 Syrphidae. at Maribo, Strandby, Bremersvold and in Kældskov; on Langeland atLohals; on Funen at Assens; in Jutland at Horsens and dates are ^^/s—^Vt. It occurs in and at woods and on fields,frequenting various flowers. Geographical distribution:— Europe down into Italy, and onMadeira; it is not known from Scandinavia b
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
