. Fig. 47. Wing of Pt. obscura. and sterna brownish: the thoracic disc clothed with somewhat longish. dark brown hairs. Abdomen velvet black or brownish black: venter brownish. Abdomen clothed with long, blackish brown hairs. Legs brown; femora and hind tibiae rather long haired, the anterior tibiae short haired. Wings brownish fumigated with brown veins: stigma long, brownish: the two first veins rising from the discal cell connected at the base. Halteres brown. Female. Front broad, brown or greyish brown: the basal joints of the antennae paler than in the male. Thorax brown with three darker
. Fig. 47. Wing of Pt. obscura. and sterna brownish: the thoracic disc clothed with somewhat longish. dark brown hairs. Abdomen velvet black or brownish black: venter brownish. Abdomen clothed with long, blackish brown hairs. Legs brown; femora and hind tibiae rather long haired, the anterior tibiae short haired. Wings brownish fumigated with brown veins: stigma long, brownish: the two first veins rising from the discal cell connected at the base. Halteres brown. Female. Front broad, brown or greyish brown: the basal joints of the antennae paler than in the male. Thorax brown with three darker, longitudinal stripes that are often indistinct. Abdomen brown, slightly shining. Length 3,5—4,5 mm. As said in the description the species has some few. but distinct hairs on the cheeks, and it is thus not conform with Becker's descrip- tion 1. c, as he says: .,Wangen braim nackt". but in other respects it agrees well; I sent my species to Becker, and he determined it as obscura Fall. The original specimens he has seen have had, I think, the cheeks rubbed and obscura has in reality sparingly but distinctly haired cheeks. Zetterstedt does not record obscura from Denmark.
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
