. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Empididae. 259 near to the margin; the apex of the cubital vein curved a little up- wards, thin and nearly evanescent before reaching the margin; the discal vein thin from the base to considerably behind the postical cross-vein; the cross-veins near to each other; a thin anal vein indi- cated. Halteres black or brow^nish black. Female. Quite similar to the male; abdomen more pointed. Length 1,5—2 mm. D. exilis seems to be the most common of our species; Amager, 0rholm, at Skelsk0r; on Langeland at Lohals, and on
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Empididae. 259 near to the margin; the apex of the cubital vein curved a little up- wards, thin and nearly evanescent before reaching the margin; the discal vein thin from the base to considerably behind the postical cross-vein; the cross-veins near to each other; a thin anal vein indi- cated. Halteres black or brow^nish black. Female. Quite similar to the male; abdomen more pointed. Length 1,5—2 mm. D. exilis seems to be the most common of our species; Amager, 0rholm, at Skelsk0r; on Langeland at Lohals, and on Bornholm at Ronne; at Lohals I caught the species in rather great numbers with the net on a clover-field. My dates are only ^^/fi—''/t. Geographical distribution: — Northern and middle Europe down into France; its northern limit is hitherto in Denmark. 5. D. pusilla Loew. 1859. Loew, Neue Beitr. zur Kenntn. d. Dipt. VI, 42, 9. — 1862. Schin. F. A. I, 96. — 1903. Kat. palaarkt. Dipt. II, 274. — Drapetis exilis (non Meig.): 1842. Zett. Dipt. Scand. I, 328, 2. Male, Frons and vertex black; ocellar triangle with four short bristles; palpi greyish. Occiput blackish, with a pair of bristles and short hairs above. Antennae black, second joint with a very short bristle below. Thorax black, shining, with a short, somewhat ad- pressed, brownish pubescence, behind there is a pair of longer, black bristles. Small notopleural and a postalar bristle present. Scutellum with two black marginal bristles and some small hairs. Pleura black, shining. Abdomen black, slightly shining, with short, dark brown hairs. Venter black. Legs black, anterior femora more or less brown at the apex, front tibiae yellowish brown, middle tibiae more or less brown and hind tibiae brown towards the apex; tarsi brown. Legs short-haired with brownish hairs; front femora with a small bristle. Fig. 117. Wing of B. pusilla. at the apex on the posterior side, and middle femora with a similar bristle on the ant
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
