298 Orthorrhapha bracliycera. 



yellowish tinged. Veins yellow or pale brownish. Halteres whitish 

 yellow. 



Female. See below. 



Length 2,6 — 2,9 mm. 



This species is easily known by the colom' of the legs. 



T. atimdipes is rare in Denmark; Ermelund (the author); on 

 Bornholm at Rø (H. J. Hansen) and one specimen from Stæger, pro- 

 bably taken in Ordrup; in all three specimens, all males; the dates 

 are ^^/g to July. 



Geographical distribution: — Europe down into Italy; towards 

 the north to southern Sweden. 



Remarks: According to the descriptions I think, that annulipes 

 Meig, and coxata Zett. are identical, as also suggested in the Kat. 

 palåarkt. Dipt. Meigen mentions both sexes of annulipes and gives no 

 difference between them, nor does Schiner do so. Zett. describes in 

 Dipt. Scand. I, only the male of coxata, bu! in VIII he mentions the 

 female and says, that it has all legs quite yellow. He further says, 

 that the female was taken in copula with the male by Stæger. In our 

 collection is, besides the male, also a female, labelled coxata, and it 

 has yellow legs (there is no remark about the specimens having been 

 taken in copula); I cannot with certainty decide, whether this female 

 belongs in reality to the species or is perhaps only a specimen of 

 bicolor; as Meigen notes no difference in colour from the male I 

 should think the latter most probable, and then Stæger must have 

 committed some error; but the question with regard to the female 

 cannot be considered as settled. 



8. T. bicolor Meig. 



1804. Meig. Klass. eur. zweifl. Ins. I, 237,2. — 1805. Fabr. Syst. Antl. 

 143, 2. - 1842. Zelt. Dipt. Scand. I, 276,5. — 1862. Schin. F. A. 1, 88 

 {Flatijpalpns) . — 1903. Kat. palåarkt. Dipt. Il, 281. — Tachijdromia dichroa : 

 1822. Meig. Syst. Beschr. 111, 83, 36. 



Male. Frons and vertex grey; epistoma white; palpi small, with 

 white hairs. Occiput grey, with yellow bristles above, white hairs 

 below. Antennæ black, the two basal joints yellow, the third joint 

 short, shorter than the arista. Thorax greyish pruinose, slightly yel- 

 lowish ; all bristles yellow. Scutellum with two yellow marginal 

 bristles and a small hair on each side. Pleura light grey pruinose; 

 above the middle coxæ a black, polished spot. Abdomen black, 

 shining, the first segments with grey bands at the sides; it is clothed 

 with short, pale yellowish hairs. Venter black. Legs yellow; the 

 tarsi generally slightly brownish annulated, the last or two last joints 



