THYRIDIDAE OF AFRICA AND ITS ISLANDS 143 



Discussion. Externally this species is rather similar to C. obstinata but the 

 genitalia are distinct. Although there is only one damaged specimen, the characters 

 are sufficiently distinctive for it to be recognized and it is the second known species 

 of the genus Cumbaya. There is some external similarity to C. subscripta but C. 

 unigena is larger and has more black spots on the wing, the genitalia are also distinct. 



Distribution. Map 49. Cameroon. 



Material examined. 



Holotype J, Cameroon: Bitje, Ja River, 200 ft, x-xi.1912, BM slide no. 10056, 

 inBMNH. 



KALENGA gen. n. 



Type-species, Kalenga maculanota sp. n. 



This genus contains three species and is related to Bupota Whalley. It can be 

 distinguished from this genus by the radial veins which arise from cell and the two 

 long pairs of tibial spurs (the proximal pair are reduced in Bupota). K. ansorgei has 

 several features which are not found in the other species of the genus. These include 

 the spines on the inner lobe of the juxta, rather similar to Collinsa subscripta, and 

 ansorgei may subsequently be placed in a separate genus. At present the genus 

 Kalenga is only known from Africa where two of the three species (maculanota and 

 culanota) seem to be restricted to Central Africa, whereas the third species (ansorgei) 

 is widespread. 



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

 Antennae ciliate. Proboscis present. Radial veins of fore wing from cell, fore wings rather 

 narrow. Two pairs of long tibial spurs. Tarsi without spines. Uncus slightly swollen below 

 apex. Gnathus present. 



Biology. K. ansorgei has been bred from galls on Myrica sp. (Myricaceae). 



Key to the African Species of KALENGA 



1 Reddish brown, narrow black or dark brown reticulations, male with prominent 



spines on inner margin of juxta ..... ansorgei (p. 145) 



- Dark brown, either with prominent white maculations or prominent white spot 



at apex of cell. Male without prominent spines on juxta .... 2 



2 (1) Dark brown, white maculations obscure, prominent white spot at apex of cell of 



fore wing. Male without median process on gnathus . . maculanota (p. 143) 



Dark brown with prominent white maculations. Gnathus with prominent 

 median process ........ culanota (p. 144) 



Kalenga maculanota sp. n. 



(PI. 1, L; PL 41, fig. 230; PI. 63, fig. 396) 



o*- Wing, iO'5-i2*5 mm. Vertex brown, irrorate with white. Frons rounded, not pro- 

 jecting between eyes. White scales between antennae continuing as white line along anterior 

 side of antennae. Antennae ciliate. Labial palps with third segment 1/2 length of second, 

 slender, not reaching vertex, approximately i\ X diameter of eye. Thorax brown. Hind 

 tibia with longest proximal spur reaching to tip of shortest distal spur, outer spur of distal pair 

 slightly more than 1/2 length of inner spur. Fore wing, pattern as in PI. 1, L, reddish brown 



