26 D. S. FLETCHER 



in the ratio of I : 2. In the male genitalia the form of the valve, which can usually 

 be seen in the dry state, and in the female the form of the sterigma and the slender 

 ductus bursae are diagnostic. 



Distribution. Kenya, Tanzania. 



Material examined. 



Zamarada ansorgei Warren, lectotype <$ here designated, Kenya ('Brit. E. 

 Africa'): Kiboko R., 5.XL1896 (Dr Ansorge), Geometridae genitalia slide no. 5904 

 in BMNH. 



Kenya: lectotype data, 9 <J (BMNH) (paralectotypes of Zamarada ansorgei 

 Warren); Makindi, i. i960 (R. Carcasson), 1 $ (NMK, Nairobi); Kibwezi, xi-iii 

 (W. Feather), 13 $, 15 $; ibidem, 3000 ft, ii-iii. 1892 (F. J. Jackson), 1 $; ibidem, 

 xii. 1922 (Dummer), 4 $, 5 $; ibidem, v. i960 (R. H. Carcasson), 1 $ (NMK, Nairobi); 

 Kedai [3°i7' S. 38°22' E.], 29.xii.1912, 1 $. Tanzania: Taveta, 26.xii.1905 (K. 

 St A. Rogers), 1 $. 



The MINIM ARIA-Grovp 



The included species are small with a fore wing length of 8-16 mm. The distal 

 areas of the wings are usually densely irrorate with grey and black; the discal spot 

 on the fore wing is usually in the form of a small, dark-margined ring. The minimaria- 

 group is characterized in the male genitalia by the presence of a short uncus bearing 

 long setae dorsally and of a well developed ventral plate on the gnathus; the valve 

 is simple and membranous, the dorsal process slender, without setose dilation or 

 projection near base, usually bearing a spine-like or slender projection at three- 

 fourths to four-fifths of its length; in anacantha sp. n., phaeozona Hampson, aureo- 

 marginata Pagenstecher and griveaudi sp. n., the dorsal process is simple; the aedeagus 

 in its apical half is usually sclerotized at one side, often either serrate or bearing 

 a single, thorn-like projection; the cornuti on the vesica consist of a cluster of short 

 spines. The male hind tibia is simple, without hair pencil. 



In the female genitalia the sterigma is not elaborately developed; in minimaria 

 Swinhoe, latilimbata Rebel, townsendi sp. n. and anacantha sp. n. the signum is 

 semi-circular in shape; in aureomarginata Pagenstecher and griveaudi sp. n. the 

 signum is wanting, in other species it is stellate. 



Key to Species and Subspecies 



1 Dorsal process of valve with projection at about three-fourths of its length, 



either triangular, spatulate, tapered or acicular, the projection inclined 

 towards the uncus .......... 2 



- Dorsal process of valve straight, curved or angled, but without projection 11 



2 (1) Dorsal process of valve with smooth-edged triangular projection at three- 



fourths. Ventral plate of gnathus trapezoid, apical margin shallowly 

 incised. Apex of fulcrum dilate, apical margin coarsely scobinate 



consecuta (p. 38) 



- Dorsal piocess of valve and gnathus not so formed ..... 3 



