. Fig. 23. Wing of D. discifer. towards the apex, besides with a ventral row of fine, small bristles; hind metatarsi with about four dorsal bristles, some anterior, and small bristles below, middle metatarsi with some small bristles below at the sides. Wings somewhat narrow, yellowish or slightly brownish tinged, most towards the anterior margin; veins black, costa with a very small and inconspicuous swelling; discai vein with a small bend which is almost not double, and hence the vein is convergent towards the cubital vein; axillary lobe large, anal vein short, only reaching half way towards
. Fig. 23. Wing of D. discifer. towards the apex, besides with a ventral row of fine, small bristles; hind metatarsi with about four dorsal bristles, some anterior, and small bristles below, middle metatarsi with some small bristles below at the sides. Wings somewhat narrow, yellowish or slightly brownish tinged, most towards the anterior margin; veins black, costa with a very small and inconspicuous swelling; discai vein with a small bend which is almost not double, and hence the vein is convergent towards the cubital vein; axillary lobe large, anal vein short, only reaching half way towards the margin. Squamulæ yellow, with a black fringe. Halteres pale yellow. Female. Epistoma broad, greyish. Antennæ shorter than in the male, third joint short triangular. Front tarsi simple, not long; the middle tibiæ may have seven antero-dorsal bristles, and there are al- ways two, or sometimes three, ventral bristles. Wings a little broader than in the male, the anal vein a little longer. Length o—5,7 mm. Remarks: Kowarz (Wien. Ent. Zeitg. III, 1884, 55) distinguishes in his table both sexes as having more than one ventral bristle on
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
