. Fig. 47. Wing of T. ammohates c?. part converging towards the cubital vein, the first posterior cell nar- ro wly open; the bend lies nearer to the apex of the vein than to the posterior cross-vein, or about in the middle; the posterior cross-vein curved with the convex side outwards; it is placed after the middle, the apical part of the postical vein being shorter than the cross-vein; there is a more or less distinct blackish or brownish spot at the bend of the discai vein, and a seam at the posterior cross-vein. Squamulæ whitish yellow, with a black fringe. Halteres whitish yellow, the base
. Fig. 47. Wing of T. ammohates c?. part converging towards the cubital vein, the first posterior cell nar- ro wly open; the bend lies nearer to the apex of the vein than to the posterior cross-vein, or about in the middle; the posterior cross-vein curved with the convex side outwards; it is placed after the middle, the apical part of the postical vein being shorter than the cross-vein; there is a more or less distinct blackish or brownish spot at the bend of the discai vein, and a seam at the posterior cross-vein. Squamulæ whitish yellow, with a black fringe. Halteres whitish yellow, the base of the peduncle darkened. Female. Epistoma a little broader than in the male, as it is less narrowed above, grey or pale greyish yellow. Antennæ some- what shorter than in the male. Front tarsi simple (but however a little compressed); middle femora without prominence below. The legs more bristly, front tibiæ with two ventral rows. Length 5,3—5,8 mm. T. ammohates is common in Denmark on suitable localities; Fure Sø, Sorø Sø, Løng Sø at Sorø; in Jutland at Nymindegab, Ma- dum Sø near Skørping, Frederikshavn, Hulsig north of Frederikshavn, and on Læsø. My dates are ^h—^ it occurs at the sandy bor-
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
