﻿650 Prof. Mario Bezzi's Report on a Collection of 



70. Exoprosopa villaeformis, sp. nov. 



^ Ç . Length of tlie body (of 6 specimens) 17 to 18 mm., of the 

 wing 16 to 17 mm., of the wing-expanse 36 to 38 mm. 



A robust species of larger size, with entirely hyaline wings, much 

 resembling a Villa. 



Head black, the frons, with exception of tlie vertex and the face, 

 reddish ; mouth edges whitish ; occiput near the indentation of the 

 eyes with a broad band of silvery scales ; frons with yellowish, face 

 on the sides with silvery, tomentum ; the frons bears short but dense 

 erect black hairs ; the face shows white hairs on the sides. Face 

 rounded, not projecting ; proboscis not projecting ; frons of the 

 female at the vertex one and a half times broader than that of the male 

 at the same point. Antennae very far apart from each other and veiy 

 short; the two basal joints are black (or, wlien denuded, redtlish), of 

 equal length, the first bearing very short black hairs; third joint 

 onion-shaped, the broad portion not longer than the first two joints 

 together and as long as the styliform portion ; the style almost as 

 long as the whole antenna. Thorax black, reddish on the sides; 

 the hairs on the collar and on the sides are yellow, those on the base 

 of the wings are white ; bristles black ; hairs on the pleurae entirely 

 white. Squamulae yellow, with a white fringe ; haltères yellowish. 

 Scutellum reddish, with black marginal bristles. Abdomen black, 

 reddish on the sides and on the venter ; there are on the segments 

 cross-bands of black, yellow and whitish tomentum ; the hairs of 

 the sides are alternately black and white ; venter clothed with white 

 scales and hairs. The form of the abdomen is characteristic ; it is 

 flattened, of rectangular outline, but the last segments are contracted, 

 forming a cone ; male genitalia symmetrical ; spines of the female 

 genitalia blackish. Legs red, whitish pollinose and black spinose; tarsi 

 and tibiae somewhat darkened ; hind claws with a small tooth. Wings 

 hyaline, the base narrowly yellowish and the costal cell yellowish- 

 grey ; origin of the second vein opposite or a little before the small 

 cross- vein, which is placed before the middle of the discal cell ; third 

 posterior cell very long ; second basal cell short and broad. Basal 

 comb very large and yellow, like that of Villa. 



Type ^ and Ç and four other specimens from North 

 Nyasa, Deep Bay, Kaporo, Wovwi River and Mwinivvanda 

 Valley, October to November 1909 {Dr. J. B. Davey). 



71. Exoprosopa minois, Loew (1869). 



Some specimens from North Nyasa, Nyungwi stream 

 and Lake shore, October to November 1909 {Dr. J. B. 



