Empididae. 187 



half as long as the third joint, and the bristly part of the style as 

 long as the basal part. Thorax black, shining, slightly metallic. The 

 dorsocentral and acrostichal bristles short, black, the hindmost dorso- 

 central bristle long. Further a small humeral bristle, one or two 

 posthumeral, a notopleural, a supraalar and a postalar bristle, all black. 

 Scutellum has about eight black marginal bristles. Pleura black, shi- 

 ning. Abdomen black above, duU or almost dull, sometimes a little 

 lighter towards the base. Venter yellowish. Abdomen has on the 

 dorsal side somewhat long, erect, brownish hairs; venter has shorter, 

 pale hairs. Legs pale yellowish, tarsi slightly brownish towards the 

 end; hind tibiæ slightly thickened towards the apex. Anterior femora 

 short-haired; hind femora with rows of long hairs above and below; 

 anterior tibiæ with fine hairs above and below, strongest above ; hind 

 tibiæ with similar hairs above and a dense pubescence below; the 

 last joint on all tarsi with somewhat long hairs above. The hairs 

 yellowish. Wings a little blackish fumigated. Veins dark brown. Stigma 

 brown, not filling the apex of the subcostal cell. Halteres blackish brown. 



Female. Similar to the male, but the eyes touching for a shorter 

 distance; the antennæ placed above the middle. The large facets of 

 the eye only occupying the upper third part, the dividing line some- 

 what sharp, The scutellar marginal bristles yellowish. Wings hyaline. 

 Halteres yellowish or dirty whitish. 



Length 2,5—3 mm. 



T. flavipes is somewhat common in Denmark, but has, however, 

 hitherto only been taken on Sealand; neighbourhood of Copenhagen, 

 Ørholm, Geel Skov and Tyvekrog; my dates are ^-'h—^'^lio, it is thus 

 a late occurring species. It occurs in woods on somewhat shaded 

 piaces on bushes, the males sometimes hover in the air in swarms; 

 thus I took it hovering in great numbers on ^•^/o in Geel Skov, while 

 the females sat on leaves in the vicinity. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to northern Sweden. Zetterstedt re- 

 kords it from July. 



2. T. clavipes Meig. 



1830. Meig. Syst. Beschr. VI. 336, ± — 1842. Zett. Dipt. Scand. 

 I, 254, 2 (Microphora). — 1860. Loew. Zeitschr. fur Entom. Breslau, XIV, 

 35, 1. — 1862. Schin. F. A. I, 79 (Microphoriis). — 1903. Kat. pala- 

 arkt. Dipt. II, 257. — Empis minuta (non Fabr.) p. p. : 1815, Fall. Dipt. 

 Suec. Empid. 32, 40. 



Male. Eyes touching, the facets in the upper part larger than 

 below. The very narrow epistoraa greyish black; ])alpi brownish. 



