REVISION OF GENUS ZAMARADA 57 



Costa of fore wing and non-hyaline terminal area of each wing corn colour (pi. 4, B5), some 

 examples a tone paler, a few examples much darker, sparsely striate with brownish yellow; 

 black irroration occasionally present between veins M x and M a . Underside of non-hyaline 

 terminal area very weakly orange white, a little darker in apical area of fore wing. Specimens 

 darkly marked on upperside are correspondingly marked in grey on the underside. 



q genitalia (Text-figs 65, 66). Uncus short and tapered. Ventral plate of gnathus slender, 

 tip narrowly rounded. Dorsal process of valve with triangular projection, weakly serrate 

 along posterior margin. Apical half of aedeagus coarsely spined at one side, the spines equal to 

 or longer than cornutus. Fulcrum one and one-half times as long as aedeagus, apex minutely 

 scobinate. 



§ genitalia (PI. 15, figs 511, 512). Sterigma slightly asymmetrical, as illustrated. 



Measurements. Fore wing: £ n^-n-omm; $ io-5-i2-omm. Antennal pectinations: 

 (J 13 X , $ 2 X diameter of shaft. 



Distinguished from the externally similar hyalinaria Guenee and ochrata Warren 

 by the shallower intrusion of the hyaline area of each wing into the coloured terminal 

 third, between veins M 3 and Cu xh and by the absence in most examples of a post- 

 medial fascia bounding the hyaline area distally; distinguished further from ochrata 

 by the absence of dark markings on the underside of the wings. Distinguished 

 from the structurally similar enigata and delta by the less strongly sclerotized and 

 serrate-edged triangular projection from the dorsal process on the valve and by the 

 more coarsely and longer spined apical half of the aedeagus. In the female genitalia 

 the form of the asymmetrical sterigma is diagnostic. 



Distribution. W. Kenya, S.E. Zaire, Tanzania, E. Rhodesia, Mozambique. 



Material examined. 



Zamarada psammites Fletcher, holotype $ [not $ as stated in original descrip- 

 tion], Kenya: Mt Elgon, iii. 1953 (T. H. E. Jackson), Geometridae genitalia slide 

 no. 6846, in BMNH. 



Kenya: Mt Elgon, iv-vi, ix-xii (T. H. E. Jackson), 7 $, 7 $; ibidem, x. 1950 

 (E. Pinhey) 1 $ (paratypes of Zamarada psammites); Kitale, xii. 1961 (Mrs E. M. 

 Dougall), 1 $ (NMK, Nairobi); Kakamega, xi. 1964 (R. Carcasson), 2 $ (NMK, 

 Nairobi); Malaba Forest, vi. 1957 (C. R. Howard), 1 <$ (BMNH). Zaire (Belgian 

 Congo): Marangu Plateau, 7000ft, ii. 1932 (T. A. Barns) 1 $, 2 $ (paratypes of 

 Zamarada psammites; labelled 'S.W. Tanganyika', recte 'S.W. Lake Tanganyika'). 

 Rhodesia: Vumba Mts, Umtali, ii, 2 <$, 3 $ (NMR, Bulawayo); Vumba, Laurence- 

 ville, 6-12.ii.1964 (Vdri& van Son), 1 $; Mt Selinda, 9-17.iv.1956 (van Son & Vdri), 

 1 6* (both TM, Pretoria). Mozambique: Vila Machado Distr., Xiluvo, 19.x. 1963 

 (D. M. Cookson), 1 $ (TM, Pretoria). 



Zamarada hyalinaria (Guenee) 



(Text-figs 67, 68; PL 15, figs 509, 510; PL 99, figs 879, 880) 



Stegania hyalinaria Guenee, 1857a : 45. Holotype $, Ethiopia (MNHN, Paris) [examined]. 



O* ? (PI. 99. figs 879, 880). Hyaline proximal three-fourths of each wing yellowish white; 

 terminal fourth greyish orange distad of smoothly sinuous yellowish white subterminal fascia. 



