REVISION OF GENUS ZAMARADA 59 



hyaline area of fore wing concentrated in some examples to form a broad medial fascia. Non- 

 hyaline terminal area a shade darker than that of hyaline area (pi. 3, A4), irrorate with light 

 brown, especially proximad of the dentate, white subterminal fascia. Underside of non-hyaline 

 terminal area very weakly orange-white; a short, broad, greyish brown fascia proximally 

 on fore wing from costa to vein M 3 ; a similarly coloured and placed fascia sometimes present 

 on hind wing. 



^ genitalia (Text-figs 69, 70). Uncus short and tapered. Ventral plate of gnathus as 

 long as uncus, the apex narrowly rounded. Dorsal process of valve cygnate and slightly 

 dilate at two-thirds, posterior surface slightly crenulate and setose apicad. Aedeagus smooth. 

 Fulcrum slender, apex minutely spined. 



O. genitalia (PI. 16, figs 513, 514). Sterigma with lateral margins strongly crenulate. 



Measurements. Fore wing: $ 9*5-i2-5 mm; $ 11-14 mm. Antennal pectinations: <J 12 X, 

 $2-5 X diameter of shaft. 



Distinguished externally from psammites by the deeper intrusion of the hyaline 

 area of each wing into the patterned distal fourth between veins M z and Cw lb and 

 from both psammites and hyalinaria by the usually well marked, white subterminal 

 fascia and the dark-patterned underside of the wings. In the male genitalia 

 ochrata may be distinguished from the closely similar hyalinaria by the form of the 

 dorsal process of the valve, the narrowly rounded tip of the ventral plate of the 

 gnathus and the smooth, unspined aedeagus. In the female genitalia the form of 

 the sterigma is diagnostic. 



Biology. A. L. H. Townsend bred ochrata at Nakuru, rearing the larvae on 

 Acacia sp., and published descriptions of the eggs, larvae and pupae (1937: 128-129). 



Distribution. Kenya, Tanzania. 



.Material examined. 



Zamarada ochrata Warren, holotype <$, Kenya (B.E.A. [British East Africa]): 

 Escarpment, 6500-9000 ft, iii. 1901 (W. Doherty), Geometridae genitalia slide 

 no. 1699, in BMNH. 



Kenya: Mombasa (van Someren) , 1 <£; Kibwezi, 18. xii. 1916-14.1.1917 (IF. Feather) 

 2(J,i$; Nairobi, iv, xi, 3 $, 1 $ (NMK, Nairobi); holotype data, xii. 1900-i. 1901, 2 <J 

 Naivasha, 6-10.V.1942 (H. Copley), 4 $, 2 $ (BMNH); ibidem, 1900 m, 1 <$ (MNHN, 

 Paris); Nakuru, 8.vi.i927 (D. M. Hopkins), 1 <$; Nakuru, bred, ii, iii, viii, x-xii 

 (A. Townsend), 4 <J, 8 $ (BMNH), 4 <$, 4 $ (NMK, Nairobi). Tanzania: Mombo, 

 2 $ (MNHU, Berlin); Mt Meru, Momella, 1800m, x. 1958 (C. Lindemann), 1 <j>; 

 ibidem, x-xi, 1957 (H. Engel), 1 $; ibidem, 11.i-19.ii.1964 (W. Forster), 10 <$, 13 $ 

 (all ZSBS, Munich); Mbeya, 28.xi.1950 (H. B. Kettlewell), 3 <?, 1 $ (BMNH). 



Zamarada melasma sp. n. 



(Text-figs 71, 72; PI. 16, figs 515, 516; PL 99, figs 885, 886) 



[Zamarada secntaria (Guenee) sensu Prout, 1932 : 506 (part). Misidentification.] 



o* $ (PI. 99, figs 885, 886). Hyaline area of fore wing irrorate with brown and grey, the 

 irroration concentrated in some examples to form a broad medial fascia; hyaline area intruding 

 strongly into patterned terminal third between veins M 3 and Cu lb on fore wing, but to an 



