. Fig. 82. Wing of 0. glabricula. basal cells are long, and the anal cell shorter than the second basal cell. Stigma present. The axillary lobe well developed. Alula not developed, the margin here fringed. Alar squamulae small, with a long fringe at the margin. The larva is described by Beling (Arch, fiir Naturgesch. 48, 1, 1882, 213); it is cylindrical, attenuated towards the anterior end, twelve-jointed and of yellowish white colour. The last segment is somewhat short and broad, and slightly, longitudinally furrowed; on the end of it is a truncate, membranous tooth with a broad base, and wit
. Fig. 82. Wing of 0. glabricula. basal cells are long, and the anal cell shorter than the second basal cell. Stigma present. The axillary lobe well developed. Alula not developed, the margin here fringed. Alar squamulae small, with a long fringe at the margin. The larva is described by Beling (Arch, fiir Naturgesch. 48, 1, 1882, 213); it is cylindrical, attenuated towards the anterior end, twelve-jointed and of yellowish white colour. The last segment is somewhat short and broad, and slightly, longitudinally furrowed; on the end of it is a truncate, membranous tooth with a broad base, and with the apex directed upwards; above the tooth the terminal spiracles are placed. The abdominal segments have small, transverse swellings (Kriechschwielen) on the ventral side. The larva is 6 nmi. long and 0,6 mm. thick. The pupa is yellowish, it has two teeth on the front side of the head, and some erect hairs on the head. The abdominal segments have each above at the hind margin a transverse row of short, brown spines. The pupa is 3 mm. long. The larvae were found on a field below decaying vegetables; the imagines de- veloped on ^Y^ to ^/6. The species occurs in low herbage on humid places in woods and. on meadows. It is carnivorous, Poulton (1. c.) records it from England with Sciara sp. as prey. The genus comprises only one species, also found in Denmark. 1. O. glabricula Fall. 1815. Fall. Dipt. Suec. Empid. 33, 42 (Emjns). - 1820. Meig. Syst. Beschr. II, 352,1, Tab. XXI, Fig. 23. - 1842. Stseg. Kroyei's Tidsskr. IV, 101. — 1842. Zett. Dipt. Scand. I, 236, 1. - 1862. Schin. F. A. I, 82. — 1903. Kat. palaarkt. Dipt. II, 260. — Ocydromia ruficollis (non Meig.): 1827. Macq. Soc. Sc. Lille, 1827, 146, 2. — Ocijdromia rufipes: 1820. Meig. Syst. Beschr. II, 353, 3, et auct. cet. — Oci/dromia scutellata: 1820. Meig. Syst. Beschr. II, 354, 5, et auct. cet. — Ocydromia dorsaJis: 1830.
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
