. Fig. 97. Wing- of A. ftavicolUs 9. with a preapical bristle; front tibiæ with a small bristle above near the base; middle tibiæ with two antero-dorsal bristles, and with one postero-dorsal near the base; hind tibiæ with dorsal rows of bristles. Wings slightly yellowish tinged; veins brown or pale brown; discai and cubital veins almost parallel, slightly diverging outwards. Squamulæ yellow, with a blackish or brown fringe. Halteres yellow. Female. Epistoma very slightly broader, and the antennæ only slightly shorter than in the male; the spot on the pleura more brownish. No bristle below at t


. Fig. 97. Wing- of A. ftavicolUs 9. with a preapical bristle; front tibiæ with a small bristle above near the base; middle tibiæ with two antero-dorsal bristles, and with one postero-dorsal near the base; hind tibiæ with dorsal rows of bristles. Wings slightly yellowish tinged; veins brown or pale brown; discai and cubital veins almost parallel, slightly diverging outwards. Squamulæ yellow, with a blackish or brown fringe. Halteres yellow. Female. Epistoma very slightly broader, and the antennæ only slightly shorter than in the male; the spot on the pleura more brownish. No bristle below at the base of the front femora; for the rest quite similar to the male. Length 2—2,2 mm. A. fiavicollis is, as the preceding species, rare in Denmark, we have only three specimens, all females; two taken on a sandy field 20*


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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad