. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 293 Geographical distribution: — Europe dowii into Italy; towards the north to middle Sweden, and in Finland; it seems to be rarer towards the nortli than flavipes. 3. T. strigifrons Zett. 1849. Zett. Dipt. Scand. VIII, 3005, 4 — 5. — 1903. Kat. palåarkt. Dipt. II, 28S. Male. Vertex and frons grey; epistoma white; palpi small and short, white haired. Occiput grev, with yellow bristles above, white hairs below. Antennæ black, the third joint elongated, twice or more. Fig. 134. Antenna of T.
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 293 Geographical distribution: — Europe dowii into Italy; towards the north to middle Sweden, and in Finland; it seems to be rarer towards the nortli than flavipes. 3. T. strigifrons Zett. 1849. Zett. Dipt. Scand. VIII, 3005, 4 — 5. — 1903. Kat. palåarkt. Dipt. II, 28S. Male. Vertex and frons grey; epistoma white; palpi small and short, white haired. Occiput grev, with yellow bristles above, white hairs below. Antennæ black, the third joint elongated, twice or more. Fig. 134. Antenna of T. strigifrons. X 100. 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 coxæ a black, pohshed spot. Abdonien 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 tibiæ 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 nnn. This species is distinguished from flavipes 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 „Stæg. in ;, so that the name is originally due to Stægef. T. strigifrons seems to be somewhat rare in Denmark, besides the specimens mentioned by Zetterstedt we have still some specimens from Stæger, probably taken at Ordrup; further it has been taken at Ørholm, Tisvilde and in Jutland at Lønstrup and Frederikshavn; it will probably pr
Size: 3429px × 729px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
