﻿144 Annals of the South African Museum. 



ExopEosoPA (Acrodisca) angulata, Loew (1860). 

 Dipteren-Fauna Siid-AtVikas, p. 242, pi. ii, tig. 89. 



Distinct from all the preceding species on account of the rounded 

 dark spots l^efore the ends of the veins along the hind border of the 

 wings. 



Originally described from the Cape from a female example, and 

 subsequently recorded from Cape Town by Miss Ricardo, there is in 

 the collection a male from Bushmanland, Een Eiet (Cape), October, 

 1911 (E. M. Lightfoot). 



The hitherto undescribed male is very like the female and has the 

 f runs of about the same breadth ; the genitalia are red, yellowish- 

 haired. In this species the claws are black, with reddish base, and 

 have an acute tooth ; the front legs are of the usual structure, the 

 tibiae being provided w'ith well -developed spicules and the tarsi being 

 pubescent, 



SuBGEN. DEFILIPPIA, Lioy (1864). 



The species of the present subgenus are rather numerous in the 

 Ethiopian fauna ; they are recognised chiefly on account of the shape 

 of the discoidal cell and of its terminal vein, and have usually a much 

 developed wing patteni ; but the distinction from some species of 

 Exoprosopa?,. str. is not always easy. Of the various groups of species 

 belonging here, only two seem to be represented in South Africa, viz. 

 the venosa-^i'0\xç, which is the more important, and the ^^raricZis-group. 



The species in the collection may be distinguished as follows : 



1 (10). y econd longitudinal vein with a double, deep, truncate loop; at end 



marginal cross-vein strongly curved, and much retreating; smaller 

 species, with narrow, much variegated or wholly infuscated wings. 



2 (3). Wings petiolate, equally darkened, without clearer parts at end or 



at hind border, bi\t with distinct darker sj^ots on cross- veins and 

 liifurcations ; fourth vein with some isolated, darker, rounded spots. 



neurospila, sp. nov. 



3 (2). Wings not distinctly jjetiolate, and with clear apex and clear hind 



margin, reticulate or spotted ; fourth vein never with isolated dark 

 spots in the centre. 



4 (7). The veins at end and at hind margin of wings have broad fuscous 



borders (wings reticulate). 



.5 (6). Base of antennae, scutollum, sides of abdomen and legs reddish- 

 yellow ; pleura with predominant yellowish hairs ; -wings less 

 darkened ....... venosa, Wied. 



ij (5). Antennae, scutellum, abdomen and legs entirely black ; pleurae 

 wholly black-haii-ed ; wings more blackened . nigrovenosa, Bezzi. 



