. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 109 — Wings in the male hyaline, slightly milky; middle femora with the bristles below tuft-like crowded at the base; front metatarsi in the female not pennate 16. vernalis. 7. Abdomen clothed with whitish or yellowish hairs 8. — Abdomen clothed with more or less blackish hairs 10. 8. Metapleural bristles whitish or yellow 9. — Metapleural bristles black 19. prodromus. 9. Abdomen white-haired; metapleural bristles whitish; size 3,2—3,8 mm 18. chioptera. — Abdomen yellow-haired; metapleural


. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 109 — Wings in the male hyaline, slightly milky; middle femora with the bristles below tuft-like crowded at the base; front metatarsi in the female not pennate 16. vernalis. 7. Abdomen clothed with whitish or yellowish hairs 8. — Abdomen clothed with more or less blackish hairs 10. 8. Metapleural bristles whitish or yellow 9. — Metapleural bristles black 19. prodromus. 9. Abdomen white-haired; metapleural bristles whitish; size 3,2—3,8 mm 18. chioptera. — Abdomen yellow-haired; metapleural bristles yellow; size 5 — 5,7 mm 20. serotina. 10. Anal vein reaching the margin 21. caudatula. — Anal vein abbreviated, not reaching the margin 22. aestiva. 13. E. pennipes L. 1761. Linn. Fn. Suec. 1896. — 1805. Fabr. Syst. Antl. 138, 6. — 1822. Meig. Syst. Beschr. III, 21, 8. - 1842. Zett. Dipt. Scand. I, 380, 14 et 1859. XIII, 5008, 14. — 1862. Schin. F. A. I, 107. - 1903. Kat. palåarkt. Dipt. II, 242. — Empis ciliata (non Fabr.): 1804. Meig. Klass. eur. zweifl. Ins. I, 220, 3. — 1815. Fall. Dipt. Suec. Empid. 20, 8. Male. Eyes contiguous; epistoma blackish. Occiput greyish black, with black, below more brownish hairs. Labruin very long, only somewhat shorter than the whole body, black; palpi black or brownish. Antennæ black, about as long as the head, the two basal joints with a few short hairs. Thorax black, shining, somewhat greyish brown pruinose, especially when seen from in front. The dorsocentral bristles somewhat long, biserial, the hinder of them longer, strong and uni- serial, acrostichal bristles a little shorter, biserial; all black. Further a hmiieral bristle, a posthiimeral, about two notopleural, a supraalar and a postalar bristle, all black, but they are not very conspicuous among the other hairs present at the sides of the thoracic disc. Scutellum with two strong, black marginal bristles, and at each side a small one. Pleura dark gr


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