188 D. S. FLETCHER 



Associated with griseola, but excluded from the type-series because only females 

 are known: 



Cameroun: Johann-Albrechts Hohe, 1896 (L. Conradt), 1 $; Lolodorf, 1894-95 

 (L. Conradt), 1 $ (both BMNH); Misellele, 14.L1936 (Dr Zumpt), 1 ? (MRAC, 

 Tervuren). Fernando Po (W. Cooper), 1 $ (BMNH). 



Zamarada euerces Prout 

 (Text-figs 308, 309; PI. 66, figs 714, 715; PI. 114, fig. 1029) 



Zamarada euerces Prout, 1928 : 69. Holotype £ Sierra Leone (BMNH) [examined]. 

 Zamarada euerces phygas Prout, 1928 : 70. Holotype $, Tanzania [not found]. Syn. n. 



(J $ (PL 114, fig. 1029). Hyaline area of wings weakly striate with brownish grey; costal 

 area of fore wing light buff irrorate with grey; discal spot on fore wing large and ovate, pale 

 grey edged with darker grey, that on hind wing similar, but smaller. Non-hyaline terminal 

 area of each wing orange-grey (pi. 5, B2) sparsely irrorate with black and varyingly suffused 

 with brownish grey (pi. 5, C2); dentate subterminal fascia broken and irregular, brownish 

 orange edged distally with black. Underside of non-hyaline terminal area uniformly greyish 

 brown. 



$ genitalia (Text-figs 308, 309). Uncus short and tapered with a slender, keel-like, dorsal 

 ridge; blunt tip slightly produced ventrad. Ventral plate of gnathus minutely scobinate, 

 tip rounded. Apex of valve narrowly rounded and incurved towards uncus; a thorn-like 

 projection at mid-valve just below apex; dorsal process with a slender, digitate, setose 

 projection in basal fourth. Aedeagus dilate medially with a short, rounded, digitate 

 projection at one-half right side and a minute, thorn-like projection just apicad of it, apical 

 half blade-like, finely tapered. 



$ genitalia (PI. 66, figs 714, 715). Posterior margin of lamella antevaginalis minutely 

 serrate and broadly and deeply excavate medially; lamella postvaginalis weakly sclerotized. 

 posterior margin with U-shaped excavation medially. 



Prout proposed the subspecific name phygas for Tanzanian examples, which 

 were recorded as having on average narrower, non-hyaline terminal areas and 

 smaller discal spots. Further material, not available to Prout at the time, has 

 shown these characters to vary and phygas is therefore synonymized with euerces. 



Externally distinct in colour and in the presence of the large, ovate, dark-edged, 

 pale grey discal spot on each fore wing. Structurally the form of the valve, with 

 the thorn-like projection just below the apex, and of the aedeagus in the male 

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



Distribution. West Africa, Senegal to Gabon, Zaire, Uganda, Kenya, 

 Tanzania, Mozambique. 



Material examined. 



Zamarada euerces Prout, holotype <§, Sierra Leone: Geometridae genitalia 

 slide no. 1458, in BMNH. Zamarada euerces phygas Prout, paratype $, Tanzania 

 ('D. 0. Afrika'): Tendaguru Bez. Lindi (Janensch S.G.), Geometridae genitalia 

 slide no. 1460, in BMNH. The holotype $ from Mikindani, Tanzania is recorded 

 by Prout as in MNHU, Berlin, but it cannot at present be traced in that institution. 



