REVISION OF GENUS ZAMARADA 171 



Characterized in the male genitalia by the presence on each valve of longitudinal, 

 sclerotized ridges on the ventral surface in the apical fourth and a dense tuft of 

 long, deciduous hair-scales on the dorsal surface, near the apex of the dorsal margin; 

 dorsal process with a large, setose projection in basal third; by the sclerotized and 

 minutely but densely scobinate fultura superior; by the form of the tapered and 

 slightly spiral aedeagus and the long, sinuous fulcrum, spined or serrate at tip. 

 The uncus is stout, tapered and dorsally setose; arms of gnathus slender, tapered 

 and joined by membrane only; vesica without cornutus. The male hind tibia is 

 strongly dilate with a hair pencil. 



Characterized in the female genitalia by the presence on the sterigma of a pair 

 of broad, ovate, lateral lobes; the lamella post vaginalis has a small but strongly 

 sclerotized, posteriorly bilobate medial process; the signum extends across the 

 greater part of the width of the corpus bursae. 



Six described species are included in the group; two further species are represented 

 in the BMNH, but the material available for study is inadequate for description. 



Key to Species 



1 Non-hyaline terminal area of wings unusually narrow; ratio of non-hyaline 



to hyaline areas at costa of fore wing varies from 1 : 4 to 1 : 5 . . 2 



- Non-hyaline terminal area of wings normal; ratio of non-hyaline to hyaline 



areas at costa of fore wing varies from 1:3 to 1:2. . . . 3 



2 (1) Hyaline area of wings sparsely striate with grey; subterminal fascia brownish 



orange Scobinate fultura superior broader than width of dorsal process 

 of valve at mid-length (ratio 5:4) . . . . denticatella (p. 171) 



Hyaline area of wings densely striate with grey; non-hyaline terminal area 

 almost uniformly grey, subterminal fascia weakly defined in darker shade. 

 Scobinate fultura superior equal or subequal in width to width of dorsal 

 process of valve at mid-length (ratio varies from 4 : 4 to 3 : 4) 



densisparsa (p. 172) 



3 (1) Proximal half of non-hyaline terminal area of wings intensely black (Known 



only from unique § type) ...... eroessa (p. 174) 



- Wings not so patterned .......... 4 



4 (3) Acicular tip of ventral margin of valve extending to or just beyond level 



of boldly rounded, dorsally setose apex of dorsal margin. euterpina (p. 174) 

 Valve not so formed .......... 5 



5 (4) Longitudinal ridge, parallel with sclerotized ventral margin of valve, 



extending basad along mid-valve from one-half dorsal margin; acicular 

 apical projection from midway between the two (Text-fig. 290) 



dorsiplaga (p. 175) 



- Longitudinal ridge, parallel with sclerotized ventral margin of valve, 



extending basad along mid-valve from three-fourths dorsal margin; 

 acicular apical projection from near apex of longitudinal ridge (Text-fig. 286) 



fessa (p. 173) 



Zamarada denticatella Prout 

 (Text-figs 283, 284; PI. 59, figs 686, 687; PI. 112, fig. 1006) 



Zamarada denticatella Prout, 1922 : 180. Holotype ^ Rhodesia (TM, Pretoria) [examined]. 

 Zamarada denticatella Prout; Janse, 1932 : 136, pi. 2, fig. 1, text-fig. 38. 



