. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Leptididae. 139 the tips of the basal cells. Veins brown. Halteres brownish with somewhat paler peduncle. Female. Front black in the middle, whitish grey at the sides. Thorax with four whitish grey stripes, the outer placed at the margins, the stripes often only to be seen on the anterior part. The basal part of the wings generally more hyaline than in the male. Length 7,5—8 mm. A. marginata is still rarer than the preceding species, only one Danish specimen exists but without particular locality. Geographical di
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Leptididae. 139 the tips of the basal cells. Veins brown. Halteres brownish with somewhat paler peduncle. Female. Front black in the middle, whitish grey at the sides. Thorax with four whitish grey stripes, the outer placed at the margins, the stripes often only to be seen on the anterior part. The basal part of the wings generally more hyaline than in the male. Length 7,5—8 mm. A. marginata is still rarer than the preceding species, only one Danish specimen exists but without particular locality. Geographical distribution: — Europe; its northern limit is in southern Sweden. 2. Leptis Fabr. Species of middle or rather large size, of somewhat slender form, the colour is yellowish with more or les extended black designs. The head is very short, otherwise somewhat semiglobular, narrower than, or as broad as, thorax. The antennae are inserted near to each other, far below the middle. The yowls not de- scending below the eyes. Antennae three- jointed, the apical joint somewhat bulb- shaped, terminating in a long arista not separated from the basal part of the joint. The eyes are bare with the facets of equal or nearly equal size. The mouth parts are not different in the two sexes; the proboscis is not long, the basal part of Fig. 42. Antenna of labium short, the labella somewhat broad ^- ^>'^ngaria. and much longer than the basal part of labium, somewhat protruding; labrum nearly of the length of the proboscis, pointed, hypopharynx a little shorter and more slender than labrum, truncate at the apex; the maxillae somewhat semitubular, pointed, as long as the labrum; the maxillary palpi are indistinctly two-jointed, the basal joint very small, the apical joint long, somewhat curved, pointed and densely haired; it is lying along the proboscis. Thorax rectangular, somewhat arched. Abdomen long, somewhat slender, nearly cylindrical, con- sisting of seven not transformed segments; in the m
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
