258 D. S. FLETCHER 



Zamarada catori Bethune-Baker 

 (Text-figs 435, 436; PL 94, figs 832-834; PL 123, fig. 1102) 



Zamarada catori Bethune-Baker, 1913 : 573. Holotype £, Nigeria (BMNH) [examined]. 



$ Q (PI. 123, fig. 1102). Hyaline area of wings vinaceous-tinted in oblique light, sparsely 

 and minutely striate with brown and finely edged distally with dark brown, then silvery grey ; 

 discal spots dark brown, that on fore wing silvery grey along discocellulars, that on hind wing 

 minute. Non-hyaline terminal area greyish orange (pi. 5, B3) lightly irrorate with brown 

 distad of subterminal fascia, brownish orange (pi. 5, C3) proximad of it; dentate subterminal 

 fascia light brown (pi. 5, D6) to dark brown (pi. 5, F6) slenderly edged distally with glossy 

 buff; cilia chequered greyish orange and grey. Underside of non-hyaline terminal area greyish 

 brown (pi. 5, E3), paler terminad. 



The male hind tibia is similar to that of sagitta in the tullia-gron-p, simple but for a short, 

 sclerotized pocket near the femoral joint. 



(J genitalia (Text-figs 435, 436). Ventral plate of gnathus minutely scobinate and narrowly 

 rounded at apex. Valves symmetrical; apical fourth of dorsal margin irregularly crenulate. 

 Aedeagus finely tapered. Fulcrum with dilate, scobinate apex, a long spine at tip. 



The extent of the dilate, scobinate area of the fulcrum varies. In the holotype from Nigeria 

 it occupies one-fourth of the total length; in specimens from Cameroun it occupies up to two- 

 fifths of the length. 



9 genitalia (PI. 94, figs 832-834). Sterigma asymmetrical, operculum at right side. 

 Lamella antevaginalis minutely and irregularly serrate along posterior margin, overlaid by 

 and fused anteriorly with a sclerotized plate. Lamella postvaginalis produced posteriorly, 

 the tip bilobate. 



Measurements. Fore wing: <§ 13-14 mm, $ 11-13 mm. Antennal pectinations: $ 14 x, 

 $ 3 X diameter of shaft. 



The variegated pattern of the non-hyaline terminal area of the wings is 

 reminiscent of euerces in the metrioscaphes-group; similar also to sagitta in the 

 tullia-growp. Distinguished from the former by its shorter wing-length and the 

 shallower excavation of the non-hyaline terminal area of each wing. Distinguished 

 from the similarly sized sagitta by the paler colour and pattern of the non-hyaline 

 terminal area and in most examples by its smoother, non-lunulate excavation 

 between veins M 3 and Cu lb ; further distinguished in the male by the longer 

 pectinations of the antennae, which are fourteen instead of eleven times as long 

 as the diameter of the shaft. In the male genitalia the form of the uncus and 

 valves and in the female genitalia the form of the sterigma are diagnostic. 



Distribution. Nigeria, Cameroun. 



Material examined. 



Zamarada catori Bethune-Baker, holotype $, Nigeria: north (D. Cator), 

 Geometridae genitalia slide no. 6429, in BMNH. 



Nigeria: Lagos, 2 $; Itu, 5.11.1910 (Farquahar), 1 <J (all BMNH); Moor 

 Plantation, 4 miles W. of Ibadan, c. 530 ft, 3.vii.i9i8 (W. A. Lamborn), 1 6* 

 (UM, Oxford); Warri, 5.^.1897 (Dr Roth), 1 # (BMNH). Cameroun: Ndongue, 

 10 km S.S.W. of N'Kongsamba, 650 m, 17.X.1971, 1 <J; Manengouba, 1040 m, 

 20.X.1971, 1 $ (both P. Darge in coll. Herbulot, Paris); Johann-Albrechts Hohe, 

 1898 (L. Conradt), 1 $; Epulan, 30.iii-17.iv. 1926 (G. Schwab), 5 $, 5 $ (all BMNH); 



