Aphiochaeta. 281 



Male. Frons a little broader than high (about 1 — IV4), black^ 

 distinctly but not strongly shining; inner bristle of lower row a little 

 below the outer and about equally distant from it and from the upper 

 supraantennal; the upper supraantennals a little more approximate 

 than the inner bristles of middle row, the lower supraantennals about 

 half as strong as the upper and slightly more approximate. Antennæ 

 of ordinary size, black or blackish, arista distinctly pubescent. Palpi 

 yellow, well developed, with ordinary bristles. Thorax black, somewhat 

 shining, with brownish pubescence. Mesopleura bristly, the bristles 

 uniform. Abdomen black, very slightly greyish, dull; sixth segment a 

 little elongated; the very short hairs visible at the hind margins of 

 the segments and at the sides; on the sixth segment they are more 

 distinct and this segment has somewhat long hairs at the hind margin, 

 especially at the sides. Hypopygium not large, greyish, higher than 

 long, without bristles, but with short hairs along the sides below, 

 ventral plate yellowish, evenly rounded at the end; anal tube short, 

 but somewhat high at the base, yellowish, dusky at the base. Legs 

 yellowish or the posterior more brownish yellow, hind femora a little 

 darkened at apex; hind femora somewhat broad and hind tibise 

 somewhat stout as in liicifrons; the hairs below the basal half of 

 hind femora a little longish, the bristles on hind tibiæ somewhat 

 delicate, rather dense (about 16). Wings somewhat yellowish or 

 light brownish tinged, especially along the veins, veins brown, thin 

 veins rather strong; costa 0,46 to about 0,50 of the wing-length, 

 costal divisions about as 4 — 2 — 1; costal cilia moderately short; 

 angle at fork not large; fourth vein a little S-like at origin, slightly 

 curved in the basal part and for the rest nearly straight, but curved 

 slightly downwards at the end. H alteres deep yellow. 



Female. Similar; abdomen slightly shining towards the end and 

 here rather hairy. 



Length. About 1,8 mm. 



This species is, as seen from the description, highly similar to 

 lucifrons; the characters which distinguish it are the a little broader 

 and less shining frons, the lower inner frontal bristle placed in the 

 middle betw^een the outer and the upper supraantennal, the arista 

 being more pubescent, the longer hairs on sixth abdominal segment, 

 the costa upon the whole being longer with longer cilia, and the first 

 division not distinctly more than double the second, also the fourth 

 vein has another curve, and fmally the species is larger. 



A. subnitida is not common, eight specimens have been taken. 



