128 P. E. S. WHALLEY 



Key to the African Species of HYPOLAMPRUS 



i White, with strong reticulate pattern. White patch at apex of fore wing, very 



conspicuous from underside ....... gangaba (p. 132) 



— Brown species, no white patch at apex of fore wing ..... 2 



2 (1) Antennae monopectinate .......... 3 



— Antennae slightly ciliate .......... 4 



3 (2) Silvery grey median fascia on fore and hind wing. Costa brown, underside with 



dark brown fascia on fore and hind wing, fringe brown . quaesitus (p. 131) 



— No silvery grey fascia. Costa black. Fringe black and white. Hind wings 



without fascia on under or upper side .... janenschi (p. 131) 



4 (2) Wing over 10-5 mm. Dark purplish brown, reticulations slightly obscured 



distrinctus (p. 130) 



— Wing under 10-5 mm. Pale yellow-brown, conspicuous reticulations 



curvifluus (p. 128) 



Hypolamprus curvifluus (Warren) comb. n. 

 (PL 15, figs 73, 74; PL 38, tig. 214; PL 61, figs 375-378) 



Banisia curviflua Warren, 1898b : 221. 

 Rhodoneura curviflua (Warren) Dalle Torre, 1914 : 21. 

 Rhodoneura curviflua (Warren); Gaede, 1917 : 365. 

 Rhodoneura curviflua (Warren); Gaede, 1929 : 494. 



o*. Wing, 9-10 mm. Vertex brown irrorate with white. Labial palps with third segment 

 1/2 length of second, upturned just reaching vertex. Thorax brown. Hind tibia with outer 

 spur of distal pair slightly more than 1/2 length of inner spur. Fore wing, pattern as in PI. 15, 

 figs 73- 74- brown with darker reticulations. R 3 and i? 4 shortly stalked. Underside paler. 

 Hind wing, colour as fore wing, dark median fascia, margin of wing slightly incised below apex. 

 Underside pale, less heavily marked than underside of fore wing. Sc +R 1 and Rs approach but 

 do not join. 



Genitalia <$ (PI. 38, fig 214). Uncus simple. Gnathus weakly sclerotized. Valve simple, 

 basal process lightly sclerotized, pointed. Juxta, two rounded lobes with a few hairs. Aedeagus 

 with minute spines in vesica. 



$. Wing, 8-1 1 mm. Colour and pattern as male. Third segment of labial palps almost 

 equal to second segment. 



Genitalia $ (PI. 61, figs 375-378). Anal papillae short. Ostium frequently V-shaped, 

 duct spiny and sclerotized on first part, fairly broad for remainder. Bursa with two large 

 thorn-like signa on sclerotized plates. 



Discussion. This is a very variable species which may be separable into sub- 

 species when more specimens are examined. In the fore wing, R 3 and R 4 are free 

 in some specimens. The colour varies from dark brown in specimens from West 

 Africa to pale brown with a strong reticulate pattern in specimens from South 

 Africa. There is considerable variation in size of the two thorn-like signa in the 

 bursa of the females. Generally the West African specimens have larger and more 

 prominent signa while those of the South African specimens are smaller. These two 

 groups could be distinct subspecies, but a third group of rather small, darker speci- 

 mens, which occur from Rhodesia to Nigeria, show differing degrees of development 

 of this as well as more sclerotization of the neck of the bursa. None of these 

 differences are constant for any geographic area. A single specimen from Ethiopia 

 which also has the neck of the bursa more sclerotized than the West African ones, has 



