238 D. S. FLETCHER 



iv. 1952 (E. Pinhey), 1 $ (BMNH); Kakamega, v. 1964 (T. H. E. Jackson), 1 <J 

 (NMK, Nairobi); Kakamega Forest, 5200ft, 10-13.vii.1960 (A. C. Twomey), 5 <$, 

 1 $ (CM, Pittsburgh); Malaba Forest, vi. 1957 (C. R. Howard), 1 <J (NMK, Nairobi). 



Associated with subsp. apsis, but excluded from the type-series. Uganda: 

 Jinja, Mabira Forest, x. 1962 (R. H. Carcasson), 2 J (NMK, Nairobi); Kampala, 

 26.vi.1953 (D. G. Sevastopulo) , 1 <$ (BMNH); Entebbe, Zika Forest, vi. 1961, 2 $ 

 (NMR, Bulawayo); Entebbe, xi. 1961 (E. S. Brown), 1 $; Masaka, Katera, Sango 

 Bay, x. i960 (R. H. Carcasson), 2 $ (all NMK, Nairobi); Ankole, Kalinzu Forest, 

 xi. 1961 (R. H. Carcasson), 1 £ (BMNH), 1 <J (NMK, Nairobi); Toro, Bwamba, 

 ix. 1961 {N. Mitton), 1 <J (NMK, Nairobi). Zaire: N. Lac Kivu, Rwankwi, 

 iii. 1952 (/. V. Leroy), 1 <$; ibidem, 19.viii.1957, 1 <J (both MRAC, Tervuren). 



Zamarada ixiaria Swinhoe 

 (Text-figs 403, 404; PI. 84, figs 792, 793; PI. 120, fig. 1079) 

 Zamarada ixiaria Swinhoe, 1904 : 517. Holotype §, Sierra Leone (BMNH) [examined]. 



(J$ (PI. 120, fig. 1079). Hyaline area of wings tinged with greenish yellow, sparsely striate 

 with grey and finely edged distally with black; distal margin on fore wing evenly lunulate, 

 but not excavate, between veins M 3 and Cu lb ; discal spot on fore wing slender, pale grey. 

 Non-hyaline terminal area light brown (pi. 6, D4) suffused with dark brown, except medially 

 on fore wing and posteriorly on hind wing; dentate subterminal fascia dark brown slenderly 

 edged distally with buff, heavily marked on fore wing and anteriorly on hind wing, slender 

 and brownish orange on posterior half of hind wing. Underside of non-hyaline terminal 

 area greyish brown. 



The male hind femur is densely fringed with long, buff hair-scales; the hind tibia is grossly 

 dilate enclosing a dense tuft of long hair-scales. 



g genitalia (Text-figs 403, 404). Uncus with a pair of weakly developed, setose lateral 

 processes. Ventral plate of gnathus semi-circular, scoop-shaped. Juxta bifurcate, the arms 

 diverging in V-form. Valves with spatulate, sclerotized projection from ventral and dorsal 

 apices, that from the former short and broadly rounded, that from the latter tapered and 

 blade-like. Fulcrum with densely spined, arcuate central core extending from short sheath. 

 Vesica with a cornutus consisting of a cluster of short spines. 



$ genitalia (PI. 84, figs 792, 793). Sterigma asymmetrical. Lamella antevaginalis fused 

 with and overlaid by a sclerotized plate, scobinate along its dorsal margin. Lamella 

 postvaginalis strongly sclerotized, bilobate. 



Measurements. Fore wing: $ 17-19 mm; $ 16-17 mm. Antennal pectinations: $ 9 X, 

 5 6 X diameter of shaft. 



Distinguished externally by colour and by the pattern of the fore wing, notably 

 by the lunulate, almost straight distal margin of the hyaline area, and in the male 

 by the structure of the hind tibia. In the male genitalia the form of the apical 

 projections from the valve and the form of the fulcrum and in the female the form 

 of the sterigma are diagnostic. 



Distribution. W. Africa, Guinea to Gabon, Fernando Po. 



Material examined. 



Zamarada ixiaria Swinhoe, holotype $, Sierra Leone: Port Lokko (F. S. Penny), 

 Geometridae genitalia slide no. 6349, m BMNH. 





