. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Empididae. 293 Geographical distribution: — Europe down into Italy; towards the north to middle Sweden, and in Finland: it seems to be rarer towards the north than ffavipes. 3. T. strigifrons Zett. 1849. Zett. Dipt. Scand. VIII, 3005, 4-5. - 1903. Kat. palaarkt. Dipt. II, 288. Male. Vertex and frons grey; epistoma white; palpi small and short, white haired. Occiput grey, with yellow bristles above, white hairs below. Antennae black, the third joint elongated, twice or more. Fig. 134. Antenna of T. strigifrons. X
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Empididae. 293 Geographical distribution: — Europe down into Italy; towards the north to middle Sweden, and in Finland: it seems to be rarer towards the north than ffavipes. 3. T. strigifrons Zett. 1849. Zett. Dipt. Scand. VIII, 3005, 4-5. - 1903. Kat. palaarkt. Dipt. II, 288. Male. Vertex and frons grey; epistoma white; palpi small and short, white haired. Occiput grey, with yellow bristles above, white hairs below. Antennae black, the third joint elongated, twice or more. Fig. 134. Antenna of T. strigifrons. X 10(). than twice as long as broad at the base, and slightly shorter than the arista; it is distinctly pubescent. Thorax brownish grey pruinose; all bristles yellow. Scutellum with two yellow marginal bristles and on each side a small hair. Pleura grey pruinose; above the middle coxae a black, polished spot. Abdomen black, shining, without bands it is clothed with slightly longish, pale yellowish hairs. Venter black. Legs yellow, tarsi black annulated. Front femora somewhat, middle femora somewhat more thickened. The legs are yellow haired: front tibiae with some small bristles, which are only slightly stronger than the other hairs. Wings hyaline or very slightly yellowish. Veins pale brown. Halteres yellowish. Female. Similar to the male; abdomen pointed. Length 2,5 to about 3 mm. This species is distinguished from fiavipes by the longer third antennal joint, and from maculipes by the absence of bands on ab- domen, the annulated tarsi, as also the third antennal joint is a little shorter. Zetterstedt says ,,StEeg. in ;. so that the name is originally due to Staeger. T. strigifrons seems to be somewhat rare in Denmark, besides the specimens mentioned by Zetterstedt we have still some specimens from Staeger, probably taken at Ordrup; further it has been taken at 0rholm, Tisvilde and in .lutland at Lonstrup and Frederikshavn; it \\\\\ probably prove to be more common w
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
