198 D. S. FLETCHER 



Distribution. W. Africa, Guinea to Cameroun, Zaire, Zambia, Tanzania. 



Two subspecies are recognized, distinguished by modifications in the genitalia 

 of both sexes. 



Zamarada labifera labifera Prout 

 (Text-figs 326, 327; PI. 70, figs 730, 731; PI. 115, fig, 1037) 

 Zamarada labifera Prout, 1915 : 342. Holotype <$, Cameroun (BMNH) [examined]. 



$ genitalia (Text-figs 326, 327). Spatulate and lobate extension of dorsal margin of valve 

 only slightly dilate at apex; ratio of greatest width of extension to its length from point of 

 cleavage 3:7. 



9 genitalia (PL 70, figs 730, 731). Sclerotized transverse ridge on eighth sternum equal in 

 width to sclerotized part of corpus bursae, which is pyriform in shape. 



Measurements. Fore wing: <$ 18-20 mm; $ 16-18 mm. Antennal pectinations: <J 17 x, 

 ° 5 X diameter of shaft. 



Distribution. Guinea, Sierra Leone, Ivory Coast, Nigeria, Cameroun, Zaire, 

 Zambia, Tanzania. 



Material examined. 



Zamarada labifera Prout, holotype J, Cameroun: Bitje, Ja River, smaller rains, 

 iv-v. 1907 (G. L. Bates), Geometridae genitalia slide no. 1463, in BMNH. 



Guinea: Beyla (Dr Mir. Mrdzek), 1 $ (MM, Brno). Sierra Leone: Freetown, 

 x-xi. 1968 (D. F. Owen) 1 <£, 1 $. Ivory Coast: Bingerville, vi. 1915 (G. Melon), 

 1 (J 1 ?. Nigeria: Zaria, Samaru, 15.viii.1968 (/. Deeming), 1 $; River Niger, 

 Ogruga, 1 <j>; Jos, vi. i960 (/. Boorman), 1 $. Zaire ('Belgian Congo'): Yakusu 

 (K. Smith), 1 <?; L. Kivu Dist., 15.vi.1950 (H. B. D. Kettlewell) , 1 $. Zambia: 

 Mwinilunga, ii, v, 4 <$ (NMR Bulawayo). Tanzania: Mikindani, i-v. 1897 

 (Reimer), 1 $. 



Zamarada labifera discata subsp. n. 



(Text-fig. 328; PI. 70, figs 732, 733; PL 115, fig. 1038) 



Distinguished from the nominate subspecies in the male by the narrower apex to the ventral 

 margin and by the greatly dilate, spatulate, disc-like apex of the dorsal margin of the valve; 

 ratio of greatest width of dorsal extension to its length from point of cleavage, 5 : 7 (Text-fig. 

 328). 



Q. genitalia (PI. 70, figs 732, 733). Distinguished by the broader sclerotized, transverse 

 ridge on the eighth sternum, which is one and one-half times as broad as the sclerotized posterior 

 part of the corpus bursae ; the corpus bursae is long and slender, differently shaped from that 

 of the nominate subspecies. 



Measurements. Fore wing: $ 20 mm; 9 18-5-19-0 mm. Antennal pectinations: £ 18 X, 

 9 6-5 X diameter of shaft. 



Distribution. N.E. Tanzania, Amani. 



Holotype $, Tanzania ('Tanganyika'): Amani (G. Pringle), Geometridae genitalia 

 slide no. 7657, in BMNH. 



