Aphiochaeta. 323 



Length 1,8 — 2,2 mm. 



This interesting species is very similar to variabilis, but at once 

 tiistinguished by the third abdominal tergite and the small hind tibial 

 bristles; by this latter character the male, when it turns up, will be 

 known from variabilis. 



A. tergata is rare, only four specimens have been taken; Ermelund^ 

 Lohals on Langeland and in Jutland at Ry (the author); the dates are 

 ''/s— 'Vt in 1918 to" 1920. 



Geographical distribution: — Hitherto only known from Den- 

 mark. 



75. A. fuscipalpis Lundbk. 

 1920. Lundbk. Vidensk. Meddel, fra Dansk naturh. Foren. 71, 17, 19. 



Male. Frons broader than high, black, slightly greyish, duU; 

 inner bristle of lower row placed in the same height as the outer and 

 both together with the upper supraantennals placed on a straight 

 transverse line; the inner bristle of lower row in about the middle 

 between the outer and the upper supraantennal, though a little nearer 

 the former; supraantennal bristles equal, the upper more approximate 

 than the inner bristles of middle row, the lower direct below the upper, 

 almost not more approximate. Antennæ of ordinary size, black,. 

 arista very distinctly pubescent. Palpi somewhat large, brown or 

 blackish brown, palest towards the apex, the bristles strong. Thorax 

 black, a little shining, with blackish pubescence. Mesopleura with 

 uniform bristles. Abdomen black, somewhat greyish, dull; it has 

 short hairs, slightly longer at the hind margins of the segments and 

 at the sides ; at the hind margin of sixth segment the hairs are distinct, 

 somewhat long at the sides. Hypopygium of medium size or above, 

 higher than long, greyish, at the base above black and shining; on 

 the sides there are about six not strong bristles in an a little obliquely 

 vertical line and a couple of bristles more anteriorly; ventral plate 

 brown or dusky yellow, large but short, broadly rounded at the end; 

 anal tube short, black. Legs black, tibiæ, especially the anterior, 

 and tarsi a little paler; hind femora broad, the hairs below the basal 

 half distinct and forming a fringe, but neither specially long nor 

 strong, longest at the middle; the hairs on the anteroventral margin 

 towards apex a little strong; bristles on hind tibiæ somewhat strong. 

 Wings brownish, veins brown; costa reaching well to the middle,. 

 costal divisions about as 13 — 11 — 4; costal ciHa long; fourth vein 



21* 



