Aphiochaeta. 273 



about as 4 — 2 — 1; costal cilia rather long; angle at fork not large, 

 but varying; fourth vein evenly curved. Halteres yellow. 



Female. Similar to the male; hind femora without fringe. 



Length 1,7 — 2 mm. 



When I described this species I was well avare that it is nearly 

 related to alhipennis Wood, which species has also a fringe below 

 hind femora; I have later on examined specimens of albipennis from 

 Wood, and I think it beyond doubt that stichata is different; alhi- 

 pennis has almost quite colourless wings with pale veins, a shorter 

 costa, the fourth vein more curved at base, but the hypopygium is 

 rather similar, tliough alhipennis seems to have more bristly hairs 

 and these more vertically arranged; the legs in stichata are also paler, 

 especially the front legs including the coxæ. 



A. stichata does not seem to be rare in Denmark; Ermelund, 

 Bogø south of Sealand, on Langeland at Lohals, and in Jutland at 

 Hejls south of Kolding, Jelling, Ry and Hals; the dates are Vt — ^/s 

 in 1917 to 1921 (the autlior). 



Geographical distribution: — Hitherto only known from Den- 

 mark. 



33. A. basispinata Lundbk. 

 1920. Lundbk. Vidensk. Medd. fra Dansk natiuh. Foren. 71, 4. 



Male. Frons not much broader than high, grey, dull ; inner bristle 

 of lower row a little below the outer and nearer to it than to the upper 

 supraantennal; supraantennal bristles equal or practically so, the 

 upper a little loss distant than the inner bristles of middle row, the 

 lower only slightly more approximate than the upper. Antennæ 

 black, of ordinary size or a little beyond, arista distinctly pubescent. 

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

 or greyish black, very slightly shining, with brownish pubescence. 

 Mesopleura bristly, one or two of the lowermost bristles a little longer 

 than the others. Abdomen black, distinctly greyish, dull; generally 

 very narrow, a little lighter hind margins to the segments are visible ; 

 abdomen has short hairs, slightly longer at the hind margins of the 

 segments and at the sides; sixth segment a little elongated, with 

 longish hairs at the hind margin and also at the sides; venter with 

 long hairs at the hind margins of the segments. Hypopygium not 

 small, on each side with an almost vertical row of six or seven bristles, 

 directed more or less downwards; ventral plate yellowish, large, 



18 



