REVISION OF GENUS ZAMARADA 145 



In some examples (PI. no, fig. 985) the non-hyaline terminal area is narrow and the 

 subterminal fascia unmarked; the genitalia of both sexes of this form appear to be identical 

 with those of the typical. 



^ genitalia (Text-figs 244, 245). Arms of gnathus slender and fused medially; ventral 

 plate not developed. Valve simple, apex narrowly rounded; dorsal process dilate and setose 

 in basal third. Ventral surface of aedeagus with a pair of lobate processes at two-thirds 

 and a slender, weakly sclerotized rod-like process extending apicad. Fulcrum narrowly 

 rounded at apex. Vesica with an arcuate, tapered cornutus with a barbed apex. 



$ genitalia (PI. 52, figs 658, 659). Operculum V-shaped and covered ventrally with a 

 crenulate, membranous pocket. Ductus seminalis dilate and coiled. 



Measurements. Fore wing: <§ 9. n-i2mm. Antennal pectinations: g 12 X, § 4-5 X 

 diameter of shaft. 



Distinguished externally from other small species occurring in West Africa by 

 the absence of discal spots. In the male genitalia the form of the aedeagus and 

 cornutus and in the female genitalia the form of the sterigma with its crenulate, 

 membranous pocket are diagnostic. 



Distribution. West Africa, Senegal to Cameroun. 



Material examined. 



Zamarada dilucida Warren, holotype <$, Nigeria ('West Africa'): Lagos, 

 Geometridae genitalia slide no. 6366, in BMNH. 



Senegal: Scdhiou, hi, v-viii (H. Castell), 10 <$, 18 $. Gambia: (A. Moloney), 

 1 <J; Bathurst, 4 <J (all BMNH). Guinea: Beyla (Dr Mir. Mrdzek), 3 $ (MM, 

 Brno); Dalaba, 10. v. 1954 (M. Vintejoux), 1 $; Tondon, 60 km N.O. of Kindia 

 (L. Labour), 2 $; Tondon, Cercle de Dubreka (L. Labour), 1 <$ (all coll. Herbulot, 

 Paris). Sierra Leone: 1915 (A. Bacot), 3 <$; ibidem (A. B. Frere), 1 $; Freetown, 

 1889 (A. Mocquerys), 1 $; Freetown, 8.x-i9.xi.i968 (D. F. Owen), 2 <$, 1 $; Bo, 

 xii. 1967 (K. Revell), 1 J (all BMNH). Ivory Coast: Korhoga, viii. 1964 

 (P. Griveaud), 1 <$; Reserve de Bouna, xi. 1965 (P. Griveaud), 1 <J; Lamto, 36 km 

 N.N.W. de Tiassale, 20-24. iv. 1969 (C- Herbulot), 1 <$, 1 $ (all coll. Herbulot, Paris). 

 Ghana: N. Territories, Kete-Krachi (4. W. Cardinall), 2 <$, 7 $; Bolgatange, v. 1962 

 (D. J. Lewis), 1 $. Nigeria: Zungeru, 31.ui-21.iv.19n (Scott Macfie), 5 $; Baro, 

 6.ix.i9io (Scott Macfie), 1 $; Zaria, Samaru, n-18.viu.1966 (/. Deeming), 2 <$, 1 $; 

 Kaduna, v. i960 (/. Boorman), 1 9; Jos, vi. i960 (/. Boorman), 1 $, 3 $; Jos, 

 21.iii.1958 (/. D. B. Perkins), 1 $; Niger, Borgu, Yelwa (Wilson), 1 $; Lokoja, 

 x. 1904, rainy season (D. Cator), 1 $; Makurdi, iii-viii. 1952 (A. W. Pring), 1 $. 

 Cameroun: Foret de Bafut Nguemba, 9 km S.E. de Bamenda 2080 m, 3-5.iv.1972 

 (C. Herbulot), 1 J (coll. Herbulot, Paris). 



The LEPTA -Group 



Placed near the excavata-group because of habitus and the form of slender, 

 tapered uncus. 



In the male genitalia the valves are symmetrical, each is tapered to a spatulate 

 apex or the apical third is incurved towards the uncus and has a spatulate apex; 



K 



