REVISION OF GENUS ZAMARADA 209 



Zamarada undimarginata Warren 



(Text-figs 345, 346; PI. 119, fig. 1065) 



Zamarada undimarginata Warren, 1897 : 123. Holotype <$, Nigeria (BMNH) [examined]. 



(J 9 (f ■ IJ 9> n S- IO °5)- Hyaline area of wings white. Costa of fore wing and non-hyaline 

 terminal area of each wing black. 



O* genitalia (Text-figs 345, 346). Closely similar to those of corroborata; differing in the 

 form of the fusion of the membranous part of the valve with the sclerotized dorsal margin, 

 tapered to an acute angle in corroborata, bluntly rounded in undimarginata; differing also in 

 the broader, less tapered apical half of the aedeagus and in the shorter fulcrum, the apex of 

 which is curved dorsad and does not extend beyond the tip of the aedeagus. 



Cj genitalia. Similar to those of corroborata. 



Measurements. Fore wing: <J 18-20 mm; § 17-19 mm. Antennal pectinations: £ 10 X, 

 5 4 X diameter of shaft. 



The colour and pattern of the species are diagnostic; other similarly coloured 

 species in the perlepidata-group differ in the presence of a large black discal spot 

 on the fore wing. m 



Distribution. Nigeria, Cameroun, Gabon. 



Material examined. 



Zamarada undimarginata Warren, holotype $, Nigeria: Rio Niger, Akassa, 

 Geometridae genitalia slide no. 6352, in BMNH. 



Nigeria: i <J; Uwet, i6.xi, 1 <$; Omo, vii. i960 (/. Boorman), 1 $. Cameroun: 

 Dokoa, Savanes de la Sanaga (P. Darge), 1 $; M'balmayo, 27.viii.1967 (P. Darge), 

 1 6* (both coll. Herbulot, Paris); Efulen, ix, x, xii (H. L. Weber), 6 <$, 3 $ (CM, 

 Pittsburgh). Gabon: Savanes de Mwadi, pres du Ieze, 26. hi. 1963 (G. Bernardi), 

 1 $ (MBG, Paris). 



The PRI NCI PIS-Group 



In the male genitalia the uncus is well developed and strongly sclerotized, 

 variable in form but usually truncate with a ventrally inclined projection from 

 mid-apical margin; laterally rounded, almost spherical in form in clavigera and 

 bilobata; tricuspid in tricuspida and tapered to a round apex in rupta, merga and 

 subincoloris. Ventral plate of gnathus strongly sclerotized, also variable in form. 

 Valve with either dorsal or ventral, or with both apices produced; setose projection 

 from base of dorsal process always very slender and digitate. Apical half of 

 aedeagus finely tapered, usually quite smooth; a minute, thorn-like projection 

 present in merga, subincoloris and xyele and an acicular projection at one-half 

 in onycha. Fulcrum scobinate at apex. Vesica without cornutus. 



The male hind tibia is dilate, enclosing a grey or buff hair-tuft, tuft equal in 

 length to tibia. 



In the female genitalia both lamellae in the sterigma are strongly sclerotized and 

 elaborately developed. Posterior part of corpus bursae usually sclerotized. 







