158 D. S. FLETCHER 



Measurements. Fore wing: <J 13 mm, 9 12-0-13-5 mm. Antennal pectinations: ^ 12 X, 

 2 6 X diameter of shaft. 



Externally distinct in the contrastingly patterned buff and grey non-hyaline 

 terminal area of the upper surface of the wings. In the male genitalia the form 

 of the dorsal process of the valve and of the aedeagus and in the female genitalia 

 the form of the sterigma and pattern of the sclerotization of the corpus bursae 

 are diagnostic. 



Distribution. W. Uganda, E. Zaire. 



Holotype J, Uganda: Kigezi, Kayonza, iii. 1967 (R. C. Otieno), Geometridae 

 genitalia slide no. 7601, in BMNH. 



Paratypes. Uganda: holotype data, 1 o (NMK, Nairobi); W. Ankole, Kalinzu 

 Forest, iv. 1938 (T. H. E. Jackson), 1 $ (BMNH); Fort Portal, v. 1958 (R. H. 

 Carcasson), 1 $ (BMNH), 1 $ (NMK, Nairobi); Fort Portal, Mpanga Forest, ii. 1957 

 (R. H. Carcasson), 1 2 (BMNH). Zaire ('Belgian Congo'): Kibali-Ituri, Nioka, 

 7.vii.i953 (/. Hecq), 1 2; ibidem, 28.vii.1953, 1 2; ibidem, 31.vii.1953, 1 2 (all 

 MRAC, Tervuren). 



Zamarada prolata sp. n. 



(Text-figs 265, 266; PI. 56, figs 674, 675; PI. in, fig. 997) 



<$ 2 (PI. in, fig. 997). Hyaline area of wings tinged with green, sparsely striate with pale 

 reddish grey and finely edged distally with buff and dark grey; discal spots dark grey. Costa 

 of fore wing buff striate with reddish grey. Non-hyaline terminal area of wings reddish grey 

 (pi. 8, B2) proximad of weakly marked and broken, brownish yellow subterminal fascia, 

 pale greyish orange (a very pale pi. 5, B3) distad of it; cilia chequered light buff and grey. 

 Underside of non-hyaline terminal area dark brown; cilia as on upperside. 



$ genitalia (Text-figs 265, 266). Juxta weakly developed, apical half tapered. Valve simple 

 and tapered, apex of dorsal margin incurved towards uncus; dorsal surface of dorsal process 

 shallowly excavate in middle third. Aedeagus with narrowly rounded apex and a short, 

 digitate projection at three-fourths. Apex of fulcrum asymmetrically dilate; a scobinate, 

 rod-like projection, two-thirds as long as aedeagus extends posteriorly from one side. Vesica 

 with one transverse, scobinate cornutus at two-fifths. 



2 genitalia (PI. 56, figs 674, 675). Posterior half of corpus bursae narrowed, posterior eighth 

 sclerotized and minutely scobinate. Lamella antevaginalis similar in shape to that of exigua, 

 but with a short, semicircular projection from anterior margin. 



Measurements. Fore wing: ^2 12-13 mm. Antennal pectinations: <J 9 X , $ 5 X diameter 

 of shaft. 



Colour of non-hyaline terminal area intermediate between that of candelabra 

 flexura and exigua; greyer than the former, and distinguished from the latter by 

 the presence of reddish grey proximad of the brownish grey, rather than dark 

 grey, subterminal fascia. Distinguished from candelabra flexura by the broader, 

 shallower intrusions of hyaline into the patterned terminal area of each wing. 

 In the male genitalia the form of the valve and of the aedeagus and in the female 

 genitalia the form of the lamella antevaginalis with the short, semicircular projection 

 from the anterior margin are diagnostic. 



Biology. G. D. H. Carpenter found pupae on the foliage of Crotalaria striata 

 DC (=C. pallida Aiton) (Leguminosae) in Uganda. 



