Empididae. 237 



Dipt. Scand I, 262, 2. — 1862. Schin. F. A. I, 83. — 1864. Loew, Wien. 

 entom. Monatschr. VIII, 244, 4. — 1903. Kat. palåarkt. Dipt. II, 268. 



Male. Frons and vertex grey; eyes not touching below the an- 

 tennæ; epistoma very narrow, white; palpi yellowish white. Occiput 

 grey, with short, pale hairs. Antennæ whitish, with a short, generally 

 darker arista. Thorax yellow, sometimes dark yellow to brownish 

 yellow, somewhat greyish pruinose; a darker median stripe may some- 

 times be present. There is a yellow notopleural bristle. Scutellum 

 only with short hairs. Pleura yellow. Abdomen dark brown to black- 

 ish brown, with very short, pale hairs, the two last segments yellow. 

 Venter yellow. Genitalia black, less swollen than in raptoria. Legs 

 yellow, the end of the tarsi very slightly brownish; front coxæ not so 

 long as in raptoria^ shorter than the femora. The legs haired and 

 armed quite as in the other species. Wings hyaline, with yellowish to 

 pale brown veins; no discai and no anal cell, both the anal vein and 



Fig. 103. Wing of H. oratoria. 



the lower branch of the postical vein wanting; radial vein longer than 

 in raptoria; the base of the fork of the discai vein lying a little more 

 basally than the apex of the radial vein. No stigma. Haiteres yellowish 

 white, 



I do not know the female; it is stated to agree with the male, 

 as Loew 1. c. declares, that the differences in the colour of the thorax, 

 mentioned in the descriptions of Fallen and Zetterstedt, are not 

 present. 



Length 3 mm. 



This species is easily distinguished from raptoria by the differen- 

 ces in the wing-venation. 



H. oratoria is very rare in Denmark, only one specimen, a 

 male, has been taken in Greisdalen at Vejle in August (H. J. 

 Hansen). 



Geogrophical distribution: — Northern and middle Europe down 

 into France; tovvards the north to northern Scandinavia, and in 

 Finland. 



