﻿Oïl the BomhyUid Fauna of South Africa (Diptera.) 171 



ExopRosoPA (Exoprosopa) cervina, sp. uov. 



Closely allied to luteicosta aud perhaps only a variety of it, but 

 distinct by the smaller size and by the more lightly coloured body, 

 chiefly on the abdomen, which is clothed with whitish and yellowish 

 scales and devoid of tufts of black hairs at the sides. 



Type 9 , an additional female specimen and a inale specimen without 

 a head, from S.W. Protectorate, Otjivarongo, Otjituo and Tsumeb, 

 December, 1919, to January, 1920 (R. W. E. Tucker). 



^ ? . Length of body 11-11-5 mm. ; of wing 12-12-5 mm. Head 

 black, reddish on the sides of face below and peristome, with yellowish 

 scales and clothed with erect black hairs on the frons ; antennae entirely 

 black, Avith the third joint elongate, longer than the two first joints 

 together, Avith a very short and thick terminal style ; face conically 

 produced ; proboscis very little projecting. Thorax black, with 

 yellowish hairs and yellowish scales, without black hairs even on the 

 pleurae ; only the bristles are black. Scutelhun reddish, with black 

 base, clothed like the thorax. Haltères dark yellowish ; squainulae 

 whitish, with white fringe. Abdomen of oval shape, entirely black ; it 

 is clothed above, with scales, without black hairs ; all the hairs of the 

 sides are yellowish; the scales are yellowish, being white only at base 

 of the second segment, where thej-^ form a complete band, and on the 

 sides of the third and of the two terminal segments. Venter black, 

 with a I'eddish hind border on each segment, with white scales and 

 white hairs ; spines of the ovipositor reddish. Legs black, but with 

 yelloAvish scales ; the front tibiae are smooth and reddish ; hind claAvs 

 with a long and acute tooth. Wings hyaline, wdth the venation like 

 that of luteicosta ; veins yellowish, black on the apical half ; the pattern 

 is very reduced, consisting only in a faint yellowish tinge of the costal 

 and subcostal cells, and in a faintly infuscated patch on the middle of 

 the fore half. Over the base of the second longitudinal vein, the discal 

 cross-vein and the end of the first basal cell, besides the lower apical 

 cross-vein of the second basal cell between this aud the fourth 

 posterior cell, and the upper corner of the cross-vein between the third 

 posterior and discoidal cell, are faintly margined with fuscous ; but in 

 the male specimen there is no trace of this infuscation. 



II. 



SYSTROPUS, Macq. 

 Systropus sanguineus, Bez. 



Two examples bred from the pupa of an unidentified Notodont moth. 

 Caledon. Cape (K. H. Barnard). 



