. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Aphiochaeta. 411 with two approximate bristles below near base, and besides with small hairs; anal tube somewhat small, yellow. Legs yellow, hind femora somewhat darkened at apex, the hairs below the basal half sparse and somewhat long; bristles on hind tibiae small, but distinct. Wings more or less yello\\ish or brownish yellow, veins brown or pale brown; costa about 0,37 of the wing-length, costal divisions about as 4â1â1; third vein a little thickened, and bent a little sud-. Fig. 121. Wing of A. halterata q .
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Aphiochaeta. 411 with two approximate bristles below near base, and besides with small hairs; anal tube somewhat small, yellow. Legs yellow, hind femora somewhat darkened at apex, the hairs below the basal half sparse and somewhat long; bristles on hind tibiae small, but distinct. Wings more or less yello\\ish or brownish yellow, veins brown or pale brown; costa about 0,37 of the wing-length, costal divisions about as 4â1â1; third vein a little thickened, and bent a little sud-. Fig. 121. Wing of A. halterata q . denly upw^ards at apex, angle at fork somewhat small; costal cilia long; fourth vein straight or nearly in its first two thirds, then curving upwards and again distinctly recurved in the apical part. Halteres yellow. Female. Similar; antennae smaller; venter likewise conspicuously haired in the apical part. Length. Fully 1 to 1,6 mm, A. halterata is not rare in Denmark; Copenhagen, Dyrehaven, Holte, 0rholm, Hillerod and on JEro (Th. Mortensen, the author); the dates are ^Vsâ^Vio in 1917 to 1921. It may be taken on windows, but also in woods. Geographical distribution: ââ Denmark, England and, according to a specimen sent from Pater Schmitz, also Holland. Remarks: Wood divides the species into a larger, darker form with brown halteres, and a smaller, generally paler form with yellow halteres, and he declares the former to occur in woods, the latter in- doors and in gardens; as said above I have taken my specimens both indoors and in woods, and they have all yellow halteres. I think it possible that Wood has mixed his species with the very similar Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lundbeck, William, 1863-. Copenhagen, G. E. C. Gad
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
