REVISION OF GENUS ZAMARADA 181 



There is some variation in the degree and shade of irroration of both the hyaline and 

 non-hyaline areas of the wings; in a few examples, ten in about 150, it is light brown (pi. 5, D4); 

 in a similar number the subterminal fascia and the discal spots are diffused and dark grey 

 (PI. 113, fig. 1023); the latter form was described by Prout as nebulimargo. 



£ genitalia (Text-figs 296, 297). Apical third of uncus of even width, tip blunt. Ventral 

 plate of gnathus scobinate, tip narrowly rounded. A strongly sclerotized and coarsely 

 scobinate ridge extends diagonally across the apical third of the valve, from base of dorsal 

 margin to apex of ventral margin, tip acicular; dorsal process with a broad-based, triangular, 

 setose projection in basal third. Aedeagus finely tapered with a tapered, blade-like projection 

 at one-half. Apex of fulcrum dilate and coarsely spined apicad. 



5 genitalia (PI. 63, figs 702. 703). Posterior margin of lamella antevaginalis serrate and 

 medially cleft; posterior margin of lamella postvaginalis bilobate with sclerotized, concentric 

 semicircular ridges medially. 



Measurements. Fore wing: £ 13-17 mm; $ 14-19 mm. Antennal pectinations: ^ 14 X, 

 9 little longer than the diameter of the shaft. 



Despite variation in colour and pattern, glareosa may be distinguished from the 

 similarly coloured nominate subspecies of plana Bastelberger by the presence of 

 an ovate discal spot in the hyaline area of each wing. In the male genitalia the 

 form of the valve and of the aedeagus with the tapered, blade-like projection and 

 in the female genitalia the form of the sterigma are diagnostic. 



Distribution. Tanzania, Burundi, Malawi, Mozambique, Zambia, Rhodesia, 

 Natal, Angola. 



Material examined. 



Zamarada glareosa Bastelberger, lectotype o here designated, Tanzania ('D. Ost 

 Africa'): Nyasaland, Kigonsera: Coll. Bastelberger: 'Paratypoid', in NMS, 

 Frankfurt. Zamarada taborae Strand, holotype $, Tanzania ('D. Ost Afrika'): 

 Tabora (Trefurth), in MNHU, Berlin. Zamarada nebulimargo Prout, holotype 

 <£, Rhodesia: Selukwe, x. 1911 (F. W. Short), Geometridae genitalia slide 

 no. 6424, in BMNH. Zamarada euterpe Oberthiir, lectotype <$ here designated, 

 Zaire ('Belgian Congo'): Tanganyika [Province], Region de M'Pala (R. P. Guillemi): 

 'Zamarada Euterpe £ Obthr' [in Oberthiir's hand-writing]: black and white outline 

 of fig. 1457: Geometridae genitalia slide no. 6422, in BMNH. 



Tanzania: E. Usambara Mts, Amani, xii. 1956 (B. Verdcourt), 1 J; Dodoma, 

 iii. 1950 (N. Mitton), 1 <$; Ilonga, Morogoro, i-ii. 1965 (Mrs Chalmers), 1 o ( a U 

 NMK, Nairobi); 40 miles S. of Iringa, iii. 1950, 1 <$, 1 $ (BMNH), 6 <J, 4 $ (TM, 

 Pretoria); Iringa-Kilosa Valley, iv. 1954 (E. Pinhey), 1 $ (BMNH); Kigonsera, 

 1 S (BMNH), 12 <J, 2 $ (ZSBS, Munich). Burundi: Kitega, vii (Dr M. Fontaine), 



1 <J, 2 $ (MRAC, Tervuren). Zaire ('Belgian Congo'): Likosi, 1 $ (UM, Oxford); 

 N. Kivu, x. 1931 (C. Seydel), 1 <J; Elisabethville, i, x, xi (C. Seydel), 2 <$, 2 $ (MRAC, 

 Tervuren), 1 <$, 1 $ (ZSBS, Munich); Katanga, Kipopo (E'ville), x-xii. 1961 (Don R. 

 Marechal), 1 $; Lubumbashi, xi-xii. 1926 (C. Seydel), 1 <$, 1 $ (all MRAC, Tervuren); 

 Ht Katanga, Shinkolobwe, i.x.1931 (/. Romieux), 1 <$ (BMNH); Lusambo, 

 21.vi.1949 (Dr M. Fontaine), 1 $ (MRAC, Tervuren). Malawi: Mlanje, iii— iv 

 (H. Barlow), 1 <$; Mt Mlanje, iv. 1913 (5. A. Neave), 2 ^; Zomba, ii, iv (H. Barlow), 



2 (J; Kasagazi, near Bandawe, 3000 ft above L. Nyassa (Dr Prentice), 1 J. 



