REVISION OF GENUS ZAMARADA 251 



9 genitalia (PI. 88, figs 808, 809). Posterior margin of lamella antevaginalis deeply excised 

 medially; distal margin of each lateral projection minutely serrate. Lamella postvaginalis 

 consisting of a slender, sclerotized, arcuate transverse band, broadened medially and finely 

 tapered laterally. 



Measurements. Fore wing: q 16-18 mm; 9 15-16 mm. Antennal pectinations: o 6 X 



2 X diameter of shaft. 



Externally closely similar in size, colour and pattern to crystallophana and to 

 leona in the latimar go-group. Distinguished from leona by the appreciably finer 

 and sparser grey striation of the hyaline area and the shallower excavation of 

 the non-hyaline terminal area of each wing between veins M 3 and Cu lb , and by 

 the absence of a discal spot on the hind wing (PL 121, fig. 1085). The male may 

 be further distinguished by the simpler hind tibia, which is dilate with a pocket 

 extending along one-half of its length, but without a conspicuous tuft of hair-scales; 

 the female may be further distinguished by the shorter antennal pectinations, 

 which are twice instead of five times as long as the diameter of the shaft. Reliably 

 distinguished from crystallophana only by the genitalia. 



Similar also to tullia, which follows, but distinguished by the blacker grey 

 non-hyaline terminal area and the more strongly marked subterminal fascia and 

 in the male by the conspicuously bright buff coremata. 



In the male genitalia the form of the asymmetrical valves and in the female 

 the form of the sterigma are diagnostic. 



Distribution. Senegal, Guinea, Ivory Coast, Cameroun, Gabon. 



Holotype <$, Cameroun ('Kamerun'): Lolodorf, 1894-1895 (L. Conradt), 

 Geometridae genitalia slide no. 7602, in BMNH. 



Paratypes. Senegal: Sedhiou, 1917 (H. Castell), 1 <$; ibidem, 5-12.vii.1917, 



1 (J; 20-30.viii.1917, 1 J, 1 $ (all BMNH). Guinea: Forekariah (Dr Mir. Mrdzek), 

 1 $ (MM, Brno). Ivory Coast: Abidjan, 1 <$ (NMK, Nairobi). Cameroun: 

 Ndongue, 10 km S.S.W. of N'Kongsamba, 650 m, 17.x. 1971 (P. Darge), 1 £ (coll. 

 Herbulot, Paris); Johann-Albrechts Hohe {Conradt), 1 <?, 2 $ (BMNH), 1 $ 

 (MNHU, Berlin); Efulen, 15.iii.1923 (H. L. Weber), 1 $; ibidem, v-vii, x, 5 <? (all 

 CM, Pittsburgh); M'Balmayo, Ecole forestiere, 7.X.1971 (P. Darge), 2 $. Gabon: 

 Mouila, ix-x. 1964 (P. Darge), 3 <$ (all coll. Herbulot, Paris). 



The TULLIA-Grovp 



Externally closely similar in colour and pattern to the emaciata-gr oup. 



Characterized in the male genitalia by the form of the symmetrical valves, 

 minutely and densely scobinate in the apical area with a short, scobinate ridge 

 almost parallel with and close to each ventral margin at three-fourths to four-fifths 

 and by the weakly developed or vestigial fulcrum. The uncus is short and blunt, 

 the ventral plate of the gnathus well developed and scobinate, the aedeagus finely 

 tapered, with or without projection. 



