REVISION OF GENUS ZAMARADA 193 



Zamarada unisona sp. n. 



(Text-figs 318, 319; PL 67, figs 720, 721; PL 114, fig. 1034) 



<y 9- (PI. 114, fig. 1034). Wings thinly scaled, except along costa of fore wing, light buff 

 irrorate with grey, usually very sparsely, rarely densely; discal spots minute. Underside 

 of wings: costa and cilia of each wing light buff; remainder hyaline with vinaceous tinge in 

 oblique light. 



£ genitalia (Text-figs 318, 319). Uncus and gnathus similar to those of cathetus. Valve 

 broader medially than in related species, then evenly tapered to obliquely truncate apex, 

 tip of dorsal margin strongly sclerotized and acutely angled; dorsal process with slender, 

 digitate, setose projection in basal fourth. Aedeagus blade-like in apical half; two rounded 

 projections at one-half. Apex of fulcrum asymmetrical, similar to that of griseola. 



9 genitalia (PI. 67, figs 720, 721). Posterior margin of lamella antevaginalis with irregular 

 pattern of spine-like projections, similar to those found in cathetus, and a U-shaped medial 

 excavation. Lamella postvaginalis with sclerotized medial plate, similar to that found in 

 phrontisaria. Corpus bursae sclerotized at posterior extremity. 



Measurements. Fore wing: £ 15-17 mm; $ 16-17 mm. Antennal pectinations: (J 12 X, 

 3 x diameter of shaft. 



Externally strikingly distinct in colour and lack of pattern; acosmeta Prout, 

 in the acosmeta-group, with which worn examples might be confused, may be 

 distinguished by the presence of a slender brown terminal band. 



Distribution. Zambia, S.E. Zaire, Angola. 



Holotype <$, Zaire ('Belgian Congo'): Elisabethville, xi. 1948 (C. Seydel), in 

 MRAC, Tervuren. 



Paratypes. Zambia: Abercorn, xi. 1963 (E. S. Brown), 1 <$ (NMK, Nairobi); 

 Bwana Mkubwa (N. W. Bell-M arley) , 1 <J; ibidem, ix. 1929, 1 $ (both BMNH); 

 Ndola, io.i.1965, 5 (J; ibidem, 29.L1965, 1 $; xii. i960, 1 <$ (all NMR, Bulawayo); 

 Nkana, xi. 1933 (Mrs Prismall), 1 <$; ibidem, xii. 1933, 2 $ (all TM, Pretoria); 

 Mwinilunga, v. 1961, 1 <J; Mwinilunga, Lisombo River, 29.iv.1963, 1 $ (both 

 NMR, Bulawayo). Zaire ('Belgian Congo'): Elisabethville, 23.L1949 (C. Seydel), 

 1 <J; ibidem, 16.iii.1930, 1 $; 4.VU1.1951, 1 <J; x. 1950, 1 <J, 1 <j>; 2.XL1948, 1 $ 

 17.xi.1949, 1 $; 18.xi.1948, 1 (j; 25.xi.1948, 2 $; 29.xi.1948, 1 <J, xii. 1948, 1 $ 

 3.xii.i948, 1 $; 16.xii.1948, 1 <$ (all MRAC, Tervuren); ibidem, 6.ii.i954, 1 $ 

 21.iv.1955, 1 <J; n.x.1952, 1 c?; 14.X.1955, 1 $; 7.XL1951, 1 $; 9.XL1956, 1 $ 

 16.ix.1952, 1 $; 18.ix.1952, 1 (J; 19.ix.1952, 1 <3; 22.xi.1951, 1 <$ (all BMNH). 

 Angola: Bihe, Gamba, xii. 1934 (R. Braun), 4 <$, 1 $; ibidem, i. 1935, 2 <$ (all 

 BMNH). 



The ACOSMETA -Group 



Species included in this group are characterized externally by the extension 

 of the hyaline area almost to the termen on each wing; the non-hyaline area is 

 reduced to an apical patch on the fore wing and a slender, terminal band elsewhere 

 or, as in acosmeta, reduced to a slender terminal band on each wing; discal spots 

 minute or absent. 



