Allophora. 99 



vibrissa somewhat distinct. Orbits outside the frontal bristles bare; 

 jowls with brown or blackish hairs. Occiput dark grey, with black 

 or blackish hairs below, bare above. Antennæ black, third joint a 

 little longer than second, nearly sqiiare; arista short, thickened in 

 basal half, almost bare. Palpi brown to black. Thorax black, dull, 

 black-haired; one sternopleural bristle. Abdomen grey pruinose, 

 with second and base of third segment black, this colour prolonged 

 backwards in the middle, on fourth and fifth segment a small black 

 middle spot forming an interrupted middle stripe. Abdomen black- 

 haired. Legs black and black-haired; no ventral bristle on middle 

 tibiæ; tarsi simple; claws and pulvilli only slightly elongated. Wings 



Fig. 13. Wing of A. pusilla $. 



of normal shape, almost hyaline to somewhat brown tinged; veins 

 all brownish black; subcostal vein ending about above medial cross- 

 vein or slightly beyond; first posterior cell long-petiolate, ending 

 at apex of wing; discai vein with the angle completely rounded, but 

 the bend rectangular so that it joins the cubital vein rectangularly; 

 posterior cross-vein about in the middle between medial cross-vein 

 and angle. Squamulæ dirty whitish or more or less brownish. Halteres 

 black. 



Female. Similar; frons still narrower, upper eye-facets more 

 distinctly larger than lower; inner vertical bristles stronger. Abdomen 

 grey with second and the middle part of third segment black; it is 

 somewhat shining. Lower sheat of ovipositor with apex curved 

 strongly downwards. Hind tibiæ with the anterodorsal bristles 

 rather numerous and forming a row. 



Length 2,7 — 5 mm. 



In this species the male does not show such variations as in the 

 other species, and there is no difference in the breadth of the wings 

 in the two sexes; pusilla Meig. is the male, semicinerea Meig. the 

 female. 



7* 



