. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Dolichopodidae. 121 dorsal, two postero-dorsal bristles, and one ventral below the middle; hind tibiae with two dorsal rows of bristles, one ventral bristle to- wards the apex, and a row of small ventral bristles; hind metatarsi with only one dorsal bristle, further one anterior and small ventral bristles. Wings somewhat brownish or greyish tinged; veins blackish, costa with a somewhat small swelling; discal vein with a large, rect- angular bend, and with a small veinlet at the lower angle; posterior cross-vein l
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Dolichopodidae. 121 dorsal, two postero-dorsal bristles, and one ventral below the middle; hind tibiae with two dorsal rows of bristles, one ventral bristle to- wards the apex, and a row of small ventral bristles; hind metatarsi with only one dorsal bristle, further one anterior and small ventral bristles. Wings somewhat brownish or greyish tinged; veins blackish, costa with a somewhat small swelling; discal vein with a large, rect- angular bend, and with a small veinlet at the lower angle; posterior cross-vein lying a little before the middle of the wing; axillary lobe not large, anal vein going forwards. Squanmlse yellow, with a black fringe. Halteres yellow. Female. Epistoma broad, grey or w^hitish grey. Antennae con- siderably shorter than in the male, third joint short, not or slightly longer than broad. Front tibiae without a long hair at the tip, and hind femora not fringed: hind tibiae not or very slightly darkened at the tip. Length 4,7—5,4 mm, is common in Denmark; Copenhagen in a garden, Amager, Hellerup, Tisvilde; on Funen at Hoffmansgave and 0rbaek- lunde, and in Jutland at Thisted. My dates are 7-—^*^/8- It occurs often near the shore, and sometimes in great number, but also more inland; Staeger took it on Amager at the shore, on Carduus. Geographical distribution: — The species is one of the most widely distributed; it occurs in Europe down into Spain, southern Italy and Greece, further in Asia Minor and in North Africa; towards the north to middle Sweden. 31. D. acuticornis Wied. Mag. I, 74,23. — 1823. Fall. Dipt. Suae. Dol. 12, 10. — 1831. Stann. Isis 1831, 55, 8. — 1843. Zett. Dipt. Scand. II, 531,26. — 1862. Schin. F. A. I, 218. - 1903. Kat. palaarkt. Dipt. II, 294. — Dolichopus ruralis Meig. 1824. Syst. Beschr. IV, 94, 35. — 1842. Staeg. Kroyer's Tidsskr. IV, 18, Fig. 35. Antenna of t). acuticornis d", from t
Size: 3383px × 739px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
