310 Orthorrhapha l)iachycera. 



Hald near Viborg, at Søndervig, Thisted and Frederiicshavn; finaliy 

 on Bornholm at Allinge; my dates are "'/o— ^'9. It occurs especially 

 on fields and commons in grass and low herbage, often in very great 

 numbers. 



Geographical distribution: — Europo down into Spain and Italy: 

 towards the north to northern Scandinavia, and in Finland. It is 

 everywhere a common species. 



Remarks: Zetterstedt mentions, besides minuta, also T. annulata 

 from Denmark, but I think this is erroneous, and the species is not 

 found in our collection. I have seen four specimens from Zetterstedt's 

 collection, labelled annidata, tvvo of them were mmuta, they had the 

 basal part of the middle tibiæ distinctiy darkened; the other two 

 were fulvipes. 



20. T. exigua Meig. 



1822. Syst. Beschr. III, 81, 31. — 1862. Schin. F. A. I, 89 (Plati/- 

 palpus). — 1903. Kat. palåarkt. Dipt. II, 283. — Tachydromia fernoralis : 

 1842. Zett. Dipt. Scand. I, 299, 34. — Platypalpus fernoralis: 1862. Schin. 

 F. A. I, 90. 



Male. Frons and vertex black, shining; epistoma narrow, white; 

 palpi somewhat small, white. Occiput greyish, with brownish bristles 

 above, white hairs below. Antennæ black, the third joint short, 

 about half as long as the arista. Thorax black, shining, very slightly 

 pruinose; one long dorsocentral bristle and one notopleural bristle 

 present; the bristles are blackish brown to dark yellowish. Scutellum 

 with two similarly coloured marginal bristles, and on each side a 

 small hair. Pleura black, shining, only grey pruinose below. Abdomen 

 black, shining, with short, yellow or brownish hairs. Venter black. 

 Legs with the front coxæ yellow, the posterior coxæ more or less 

 black at the base; the femora yellow, the front femora with a black 

 patch or stripe above, middle femora black in about the apical two 

 thirds, hind femora in the apical half; the tibiæ yellow or more or 

 less brownish ; the tarsi brown, darkest towards the apex. The front 

 femora a 'little, the middle femora slightly more thickened. The legs 

 are short-haired with yellowish hairs. Wings hyaline. Veins brown, 

 the upper branch of the postical vein thinner towards the apex, the 

 lower branch distinct in its whole length. Balteres whitish. 



Female. Similar to the male, except the pointed abdomen. 



Length 1,7 — 2 mm, 



This species is very similar to minuta, but distinguished by the 

 smaller size, the less pruinose thoracic disc and pleura, the shorter 



