20 P. E. S. WHALLEY 



The other subspecies, C. pexa guttulata has been bred from Terminalia avicen- 

 noides Guill. and Perr. (Ufaruna, 1968). No other record of bred material from 

 intervening areas is known, but as can be seen from map 73, C. pexa guttulata follows 

 one vegetation-type right across Africa from the West Coast, completely round the 

 main rain-forest zone. Without information on the host plants in the region where 

 these two subspecies meet, it is not known if they are host specific. Certainly the 

 external colour, which is a clear distinction at extremes of their range, becomes 

 unusable where they meet for separating the subspecies. 



In the absence of ecological data for the majority of species in relation to vege- 

 tation the comparison has only been attempted for this one species but certain 

 facts were obtained when the continent was divided into the zones below. These 

 zones were based on existing information, but also on data provided from this 

 study. For example, the inclusion of Angola in the Congo Basin zone is shown by 

 the figures for the number of species which it has in common with the areas on either 

 side of it. There are 25 species known from Angola of which only 6 occur in S. 

 Africa. On the other hand, of the 25 Angolan species, 17 are found in the Congo, 

 which suggest a greater affinity to this area. 



The numbers in brackets are the number of species found in that territory. 



North African Zone 



No species were recorded from any of the following: Morocco, Algeria, Tunisia, 

 Libya, Egypt. 



West African Zone 



Senegal (5); Mali (1); Gambia (3); Guinea (11); Sierra Leone (27); Liberia (12); 

 Ivory Coast (28) ; Ghana (36) ; Togo (4) ; Nigeria (36) ; Fernando Po (3) ; Sao Thome 

 (1) ; Portuguese Guinea (0) ; Dahomey (0) ; Mauretania (o) ; Niger (o) ; Upper Volta 

 (o) ; Annobon (0) ; Principe (0) . 



Congo Basin Zone 



Cameroon (46) ; Central African Republic (8) ; Gabon (31) ; Rio Muni (7) ; Republic 

 of the Congo (6); Democratic Republic of the Congo (63); Angola (25). 



East African Zone 



Uganda (35) ; Kenya (30) ; Tanzania (42) ; Ruanda (3) ; Burundi (o) ; (no speci- 

 mens are known from Zanzibar or Pemba). 



North East African Zone 



Tchad (0); Sudan (8); Ethiopia (2); Somali Republic (1) ; Socotra (0). 



Southern African Zone (including the Mascarene Islands and Aldabra). 



Rhodesia (33) ; Zambia (24) ; Malawi (18) ; Mozambique (16) ; Botswana (5) ; 

 Lesotho (1); South West Africa (13); Swaziland (o); South Africa (25); Aldabra 

 (2); Mauritius (3); Reunion (0); Rodriguez (o). 



