. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 103 somewhat short, the basal joints short, of about equal length, the thlrd joint not long. Dorsocentral and acrostichal bristles biserial, the latter. Fig. 36. Antenna of E. vitripennis. x 100. sometimes absent (e. g. hyalipennis). One stronger and some weaker humeral bristles, a posthumeral, one to some notopleural, a supraalar and a postalar bristle. Metapleural bristles numerous. Scutellum with two to four bristles. Abdomen vvithout bristles. Male genitalia small or larger. Legs with b
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 103 somewhat short, the basal joints short, of about equal length, the thlrd joint not long. Dorsocentral and acrostichal bristles biserial, the latter. Fig. 36. Antenna of E. vitripennis. x 100. sometimes absent (e. g. hyalipennis). One stronger and some weaker humeral bristles, a posthumeral, one to some notopleural, a supraalar and a postalar bristle. Metapleural bristles numerous. Scutellum with two to four bristles. Abdomen vvithout bristles. Male genitalia small or larger. Legs with bristles; hind legs somewhat elongated; front and hind metatarsi in the male more or less thickened. Posterior, or only hind legs in the female compressed and pennate. Wings with the axillary lobe well developed and the axillary angle acute; the upper branch of the discai vein abbreviated, and generally also the anal vein; discai cell not pointed; cubital vein terrainating a the apex. Tahle of Species. 1. No acrostichal bristles; thoi-acic and scutellar bristles yellow, the latter four in number; anal vein reaching the margin 10. hyalipennis. — Acrostichal bristles present; thoracic and scutellar bristles black; the latter two in number; anal vein 2. 2. Halteres and metapleural bristles pale yellow 11. albinervis. — Halteres and metapleural bristles black 12. vitripennis. 10. E. hyalipennis Fall. 1815. Fall. Dipt. Suec. Empid. 21, 10. — 1822. Meig. Syst. Beschr. III, 24, 14. — 1842. Zett. Dipt. Scand. I, 385, 19. — 1862. Schin. F. A. I, 106. p. p. — 1893. Strobl. Mitth. Ver. Steierm. 1892. 73. — 1903. Kat. palåarkt. Dipt. II, 238. Male. Eyes contiguous; epistoma dark grey. Occiput grey, with more or less pale hairs. Labrum ferruginous or brown, very long and thin, more than twice as long as the head is high. Antennæ relatively long, about of the length of the head, black, the third joint elongated; the style somewhat long. Thorax grey, unstriped, v
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