Aphiochaeta. 



351 



height as the outer and nearer to it than to the upper supraantennal ; 

 supraantennal bristles imequal, the lower half the size of the upper 

 or somewhat over; the upper supraantennals a little more approximate 

 than the inner bristles of middle row, the lower still more approximate. 

 Antennæ brown or reddish brown, arista distinctly, but short-pube- 

 scent. Palpi yellow, of ordinary size and armature. Thorax reddish 

 yellow to brownish, dull or dullish, with brown pubescence. Pleura 

 coloured as the disc. Mesopleura bare. Abdomen brown to blackish, 

 dull, there is often on the second segment a more or less distinct 

 reddish spot at each lateral front corner, and the front margin may 



Fig. 106. Wing of A. rubella S' 



be reddish; the hind margins of the segments somewhat pale; the 

 short hairs are distinctly a little longer at the hind margins of the 

 segments and at the sides, but not more elongated at the hind margin 

 of sixtli segment; at the hind corners of second segment the hairs are 

 somewhat distinct. Venter yellow. Hypopygium of medium size, 

 brown or greyish brown, with small hairs below on the sides; the lower 

 hinder corners are distinctly drawn out into a little point; below 

 there is a short, flap-like, yellowish ventral plate; anal tube short, 

 but high, yellow. Legs yellow, hind femora slightly or a little more 

 darkened at apex, the hairs below the basal half long; bristles on hind 

 tibiæ somewhat fme, smaller than in flava and of more equal size. 

 Wings yellowish, veins brown; costa reaching to the middle, 1 longer 

 than 2 and about equal to 2 + 3, or slightly shorter; costal cilia 

 moderately short; fourtli vein issuing a little behind the base of the 

 fork, a little curved at the base, then nearly straight and again a little 

 curved at the end. Halteres yellow. 



Female. Similar ; antennæ paler, red or yellowish red ; hind femora 

 likewise with long hairs below, 



Length 1,5 — 2 mm. 



