THYRIDIDAE OF AFRICA AND ITS ISLANDS 141 



Sierra Leone: i $, Bo (Revell), ix.1968; Ivory Coast: 4 $, Bingerville [Melon), 

 iii-viii.1915; Nigeria: i $, data as type; 1 $, U.C. Ibadan, iv.1958 (Sutton); 1 <$, 

 Cross River, Old Calabar; Cameroon: 3 $, 2 $, Efulen (Weber), in CMP; Gabon: 

 1 $, Kangwe, Ogove River (Good); Uganda: 1 (J, Ruwenzori Range, Semliki Forest, 

 2850 ft, viii-ix.1952 (Fletcher); 1 $, Banda, xii.1906 (Ansorge); Tanzania: 3 $, 

 Amani, vii.1962 (Pringle); 1 $, Amani, 1934. 



CUMBAYA gen. n. 



Type-species, Cumbaya obstinata sp. n. 



Although very little material is available of the two species of this genus, they are 

 of interest for the differences in the genitalia of the males from those in other genera. 

 The genus is probably near Collinsa Whalley but can be separated from this by the 

 fusion of the radial veins of the fore wing. Externally, C. obstinata is similar to 

 large specimens of C. subscripta but the remarkable spines in the aedeagus and the 

 small teeth near the base of the valve separate Cumbaya from this and all the other 

 Thyridid genera. The genus is known only from Africa, including the island of 

 Sao Thome in the Gulf of Guinea, but is absent from Madagascar. 



Generic description. Labial palps 3-segmented. Eyes without interfacetal hairs. 

 Antennae minutely ciliate. Proboscis present. Fore tibia with epiphysis. Hind tibia with 

 two pairs of spurs. Tarsi without spines. Fore wing with strongly angled terminal margin, 

 veins R 3 and R t with common stalk. Gnathus of male a sclerotized loop, minutely spined in 

 mid-line. Sclerotized teeth at base of valve near median basal process. Saccus slightly 

 elongate. Aedeagus with strongly developed spines. Duct of bursa of female with small 

 sclerotized plates on first part. 



Biology: No information. 



Key to the African Species of CUMBA YA 



1 Yellowish brown species with distinct black spots. Aedeagus with two laterally 



directed spines ......... obstinata (p. 141) 



- Brown species, with less conspicuous spots. Aedeagus with numerous laterally 



directed spines .......... unigena (p. 142) 



Cumbaya obstinata sp. n. 



(PI. 17, fig. 86; PI. 41, fig. 228; PI. 63, figs 393-395) 

 o\ Wing, 10 mm. Vertex pale brown, frons rounded, not projecting between eyes. Labial 

 palps with third segment almost equal in length to second, upturned, reaching vertex. Thorax 

 pale brown. Hind tibia with inner proximal spur 1/3 length of outer spur. Distal pair with 

 inner spur 1/2 length of outer. Fore wing, pattern as in PI. 17, fig. 86, purplish brown with 

 indistinct brown transverse fascia. Costal margin with white streaks along centre. Hind part 

 of terminal margin deeply incised. Underside with prominent black and silver iridescent scales 

 in cell and along base of anterior veins. Terminal area with white triangle extending backwards 

 over apices of veins. Black spots between veins, subterminal black spot prominent. Hind 

 wing, colour as fore wing, prominent black spots towards hind margin. Underside similar, 

 heavily spotted with black. Sc+R t and Rs free. 



Genitalia $ (PI. 41, fig. 228). Uncus simple. Gnathus a weakly sclerotized loop, slightly 

 enlarged on mid-line, with minute spines. Valve simple. Median basal process sclerotized 



