. 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 di
. 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 fuscohalterata.
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
