. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Asilidae. 51 the lower surface of the tarsi. Claws black, reddish at the outermost base. Empodium reddish. Wings hyaline at the basal half, greyish at the apical half; veins blackish, costa with black hairs at the base. Halteres Fig. 20. Wing of L. gilva. Female. With exception of the genital differences quite agreeing with the male. Length 15—18 mm. L. gilva is not rare in Denmark and has been found in not few localities; Fuglevad, Geel Skov, Ruderhegn, Grib Skov, Tisvilde, Bromme at Sor0; on Funen at Fa
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Asilidae. 51 the lower surface of the tarsi. Claws black, reddish at the outermost base. Empodium reddish. Wings hyaline at the basal half, greyish at the apical half; veins blackish, costa with black hairs at the base. Halteres Fig. 20. Wing of L. gilva. Female. With exception of the genital differences quite agreeing with the male. Length 15—18 mm. L. gilva is not rare in Denmark and has been found in not few localities; Fuglevad, Geel Skov, Ruderhegn, Grib Skov, Tisvilde, Bromme at Sor0; on Funen at Faaborg and in Jutland at Silkeborg and at Hald near Viborg. My dates are ^/t—^/g. It occurs in woods in districts with pine-trees, especially on localities with high-stemmed trees, and it is here found sitting on the stems watching for prey. During a great invasion of Tomicus tijpographus in Grib Skov in 1900 the species was very common while it is otherwise somewhat rare there; it was sitting on the stems in great numbers, feeding on the typographs. The larva has been taken in Ruderhegn on ^-U under bark of fir and larvae and pupae in Geel Skov in a stub of fir on ^/s. Geographical distribution: — Northern and middle Europe; towards the north to northern Scandinavia; it is not found in Britain. It occurs also in North America in Canada. 3. L. marginata L. 1761. Linn. Fn. Suec. 1913 (Asilus). — 1842. Zett. Dipt. Scand. I, 163,6 et 1849. VIII, 2976,6. — 1847. Low, Linn. Entom. II. 556, 12. — 1862. Schin. F. A. I, 140. — 1903. Kat. palaarkl. Dipt. II, 135. — 1849. Zett. Dipt. Scand. VIII, 2976, 5—6. Male. Epistomal callus black; face above the callus with white or yellowish hairs which are depressed and directed downwards, so that they cover the upper part of the callus; the face is greyish just below the antennae. Epistomal beard black; above the antennae and on the vertex there are black hairs. Proboscis black with long, blackish hairs at the base a
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
