REVISION OF GENUS ZAMARADA 243 



(i6*5-i8-5 mm) and a less boldly excurved hyaline area between veins M 3 and 

 Cu lb , but the genitalia are identical with those from W. Kenya. These examples, 

 which may represent a subspecies, are associated with erosa, but are excluded 

 from the type-series. 



Distribution. W. Kenya, Uganda, Cameroun. 



Holotype $, Kenya: Malaba Forest, vi. 1957 (C. R. Howard), Geometridae 

 genitalia slide no. 7797, in BMNH. 



Paratypes. Kenya: holotype data, 1 <$ (BMNH); Kakamega, hi. 1966 (R. H. 

 Carcasson), 2 $ (NMK, Nairobi); Kakamega, vi. 1931 (T. H. E. Jackson), 1 $ 

 (BMNH); Kakamega Forest, 5200ft, 10-13. vii. i960 [A. C. Twomey), 1 <$ (CM, 

 Pittsburgh); Mt Elgon, 10. xi. 1930 (T. H. E. Jackson), 1 $; ibidem, xi. 1958, 1 <$ 

 (both BMNH); Kitale, Kaptagat, 31.iii.1948 {Walter), 1 $ (NMK, Nairobi). 



Other material, excluded from type-series: Uganda: Bwamba Forest, ix. 1961 

 (2V. Mittori), 1 3. Cameroun: Massif du Manengouba, Piste Bakwat-Mwakoumel, 

 1240 m, n-12.iv.1972, I <$; Prefecture de Kumba, 5 km E. dc Oku, 2120 m, 

 8-9. iv. 1972, 1 $ (both C. Herbulot, in coll. Herbulot, Paris); between Kumbo and 

 Bamenda, 4000 ft, viii. 1922, 1 <J; Genderu Mts, 4600 ft, ix. 1921, 1 £ (both 

 BMNH). 



The PRISTIS-Grovp 



Characterized externally by colour and pattern; the orange-grey, non-hyaline 

 terminal area is broadly and deeply excavate between veins M 3 and Cu lb ; the dark 

 brown to black subterminal fascia is very strongly marked in the anterior half of 

 each wing and diffuse distad in the discal area of the fore wing. Characterized 

 in the male genitalia by the presence of four processes arising from the apex of 

 each valve, two from the apex of the ventral margin and two from the apex of 

 the dorsal margin; dorsal surface and dorsal margin of valve densely setose; 

 uncus slender and tapered from a broad base with a pair of rounded, setose 

 projections, one at each side; ventral plate of gnathus shallow, apex rounded; 

 aedeagus with smooth, digitate projection at one-half; fulcrum of even width, one 

 margin serrate in apical half; vesica with a minutely scobinate, longitudinal band. 



In the male the hind femur is fringed with long, buff hair-scales; hind tibia 

 fringed with long, dark grey hair-scales, grossly dilate, irrorate on outer surface 

 with dark grey and enclosing a dense tuft of hair-scales. 



Key to Species 



i Twin processes extending from apex of dorsal margin of valve slender and of 



equal length (Text-fig. 413). Distribution: Cameroun . . pristis (p. 244) 



Twin processes extending from apex of dorsal margin of valve dissimilar, one 

 short, straight and acicular, the other twice as broad, three times as long 

 and coarsely scobinate, the apex acicular and incurved towards uncus 

 (Text-fig. 415). Distribution: Liberia .... anna (p. 244) 



I 



