Empididae. 117 



as in venialis^. Penis is long, thin, curved upwards and more or 

 less sinuous, and tiiere is a triangular ventral larnella. At the hind 

 margin of the eighth segment there are long hairs, the lamellæ are 

 shorter haired; all the hairs are pale yellowish. Legs blackish or 

 brown; coxæ greyish pruinose; front metatarsi not, hind metatarsi 

 distinctly dilated. Front femora short-haired ; middle femora some- 

 what densely haired above, the hairs longest towards the base, and 

 with two rows of bristles below, which are shortest towards the 

 apex; the bristles at the base are not placed tuft-like as in vernalis; 

 hind femora short-haired above, with longer, fme hairs on the posterior 

 side and stronger hairs on the anterior side, and with shorter and 

 longer bristles below; front tibiæ with bristly hairs above, and with 

 a short, dense pubescence on the ventral and posterior side; middle 

 tibiæ with bristly hairs below and with three or four long bristles 

 above, besides with a short, dense pubescence on the anterior side; 

 hind tibiæ somewhat densely and longish haired below, and with 

 similar hairs and some bristles above; hind metatarsi slightly spinuJous 

 beneath and with longer hairs and some bristles above; the tarsal 

 joints have short bristles at the apex, longest on the anterior tarsi; 

 the dense pubescence on the anterior tibiæ is continued out on the 

 tarsi. All the hairs and bristles are black or brownish black, the 

 dense pubescence pale brown. Wings somewhat hyaline, slightly 

 greyish; veins brown to pale brownish. Stigma yellowish, often very 

 faint. Balteres yellow. 



Female. Frons broad, grey, with a longitudinal impression. The 

 bristles on thorax shorter than in the male. Abdomen short-haired, 

 the hairs however longer and paler than in vernalis. Posterior legs 

 compressed; posterior femora pennate on both sides, but the row of 

 scaly hairs below^ not reaching to the base; front tibiæ ciliated above, 

 middle tibiæ pennate above, ciliated below, hind tibiæ likewise but 

 also pennate below at the base. Wings strongly brownish, especially 

 on the anterior part. 



Length 3,5 mm. 



This species much resembles vernalis^ but is however distinguished 

 without difficulty; besides the two scutellar bristles there are several 

 other distinguishing characters; in the male the genitalia are of a 

 different structure and with pale hairs, and also the hairs on the 

 legs show several differences, especially the basal bristles below the 



^ Both here and in vernalia this hook or tubercle may be more or less distinctly 

 observable, which is certainly dependent on the more opened or closed state of 

 the genitalia. 



