48 D. S. FLETCHER 



Zamarada prionotos sp. n. 



(Text-figs 51, 52; PI. ii, figs 493, 494; PL 97, fig. 868) 



$ $ (PL 97, fig. 868). Hyaline area of wings irrorate with brown and finely edged distally 

 with brownish yellow, then black and silvery grey ; costa, posterior margin and proximal fourth 

 of fore wing, proximal tenth of hind wing brownish yellow (pi. 5, C7-8) irrorate with brown 

 (pi. 5, F4, sepia); antemedial fascia on fore wing slenderly black; broad, ill-defined medial 

 fascia developed in posterior half of hind wing; discal spot on fore wing silvery grey edged with 

 sepia, that on hind wing minute, sepia. Non-hyaline terminal area of each wing brownish 

 yellow irrorate with sepia, densely in discal area distad of subterminal fascia and proximad of it 

 in posterior half of hind wing; dentate subterminal fascia silvery grey edged proximally with 

 patches of clear brownish orange. Underside of non-hyaline terminal area greyish brown, 

 darker where the corresponding upperside pattern is densely sepia. 



<§ genitalia (Text-figs 51, 52). Apical two-thirds of uncus slender and of even width, one- 

 fifth as wide as basal third. Ventral plate of gnathus slender and scobinate, similar in length 

 to uncus. Ventral surface of dorsal process of valve evenly curved from base to apex, dorsal 

 surface coarsely and irregularly serrate from one-fourth to five-eighths. Aedeagus minutely 

 serrate near apex on ventral surface. Fulcrum broadened and heavily spined at apex. 



9 genitalia (PI. n, figs 493, 494). Sterigma asymmetrical, anterior margin crenulate. Corpus 

 bursae wholly membranous. 



Measurements. Fore wing: $ 12-0-12-5 mm; 0. !3"5 nam. Antennal pectinations: (Jio X, 

 9 8 X diameter of shaft. 



Distinguished externally by the well contrasted brownish yellow and sepia 

 pattern of the non-hyaline terminal area of each wing and structurally by the 

 genitalia of both sexes. In the male the serrate-edged dorsal process on the valve 

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



Distribution. Rhodesia. 



Holotype <$, Rhodesia: Mashonaland, Umtali (G. A. K. Marshall), Geometridae 

 genitalia slide no. 6507, in BMNH. 



Paratypes. Rhodesia: holotype data, 1 $ (BMNH); Umtali, 5.L1918 {A.J. T. 

 Janse), 1 <$ (TM, Pretoria); Huntersroad, 12.xii.1917 (E. Whatley), 1 $ (BMNH). 



Zamarada pulverosa Warren 



(Text-figs 53-57; PI- !2, figs 497-5oo; PI- 9 8 > % s 870-872; Map 1) 



Zamarada pulverosa Warren, 1895 : I 5 8 - NEOTYPE <J, Cape Province (BMNH), here 



designated [examined]. 

 Zamarada pulverosa Warren; Gaede, 1915 : 123, 145. 

 [Zamarada secutaria (Guenee) sensu Piatt, 1921 : 131. Misidentification.] 

 Zamarada pulverosa Warren; Janse, 1932 : 143, pi. 2, fig. 4, text-fig. 39. 



^ (PI. 98, figs 870, 871). Hyaline area of wings varyingly irrorate with brownish yellow; 

 costa and posterior margin of fore wing light yellow irrorate with dark brown; antemedial 

 fascia on fore wing dark brown edged distally with brownish yellow; medial fascia on each wing, 

 when marked, broad and diffuse, dark brown irrorate with brownish yellow; postmedial fascia, 

 forming distal margin of hyaline area, dark brown to black, slender and sharply marked, finely 



