thyrididae of africa and its islands 181 



Material examined. 



Holotype $, Ghana: Ashanti, Obuassi, 150 ml inland, end of wet and dry season, 

 1902-03 (Bergman), BM slide no. 9619, in BMNH. 



Sierra Leone: i <$, Bo, i.1958 [Taylor); 3 <$, Bo, xii.1967 (Revell); Ghana: i <J, 

 1 $, Kumasi, x.1926 (Crewdson) ; 2 $, Insuta, Ashanti, ix.1928 (Pomeroy); 1 $, 

 Juaso, xi.1936 (Cansdale); 1 £, Ashanti, Juaso, viii.1937 (Cansdale). 



Cecidothyris orbiferalis (Gaede) comb. n. 

 (PL 2, P; PL 47, fig. 267; PL 68, fig. 442) 



Proterozenzis orbiferalis Gaede, 1917 : 380. 

 Proterozeuzis orbiferalis Gaede; Gaede, 1929 : 497. 



o*. Wing, 12-14-5 mm. Vertex white, irrorate with brown scales. Frons white, bulbous. 

 Antennae strongly bipectinate. Labial palps with second segment slightly longer than first. 

 Thorax and patagia white, irrorate with reddish brown scales. Fore wing, pattern as in PI. 

 2, P, brown with large circular maculations. Costal margin grey, basal area of wing with white 

 spots. Underside whiter in terminal and subterminal areas, basal area lighter than upper 

 surface. Radial veins usually from cell, \A and 2A with common base, iA coming off 1/3 from 

 base, almost reaching wing margin. Hind wing, colour and pattern as fore wing. Underside, 

 white, pattern only slightly visible. Sc+R x and Rs free. 



Genitalia q* (PI. 47, fig. 267). Uncus simple. Gnathus without prominent median pro- 

 jection. Vesica in aedeagus minutely spined. 



$. Wing, 16-18 mm. Colour and pattern as in male. 



Genitalia ? (PI. 68, fig. 442). Anal papillae short. Neck of duct slightly constricted and 

 sclerotized. Bursa without signum. 



Discussion. This species is similar externally to C. parobifera Whalley but can be 

 distinguished by the brown (not reddish brown) colour and general smaller macula- 

 tions. The tarsi of specimens of orbiferalis have single claws while those of parobifera 

 are bifid. The genitalia of the two species are similar. It is possible that parobifera 

 may only be a subspecies of orbiferalis but since both occur together in central 

 Africa, I regard them as distinct species. Wing venation varies in this species, in 

 most specimens R 4 and R 5 were free but in a few specimens these veins joined 

 together near the cell. 



Distribution. Map 8. Ghana; Togo; Central African Republic; Uganda; 

 Rhodesia. 



Material examined. 



Holotype <$, Togo: BM slide no. 9705, in ZMB. 



Ghana: i <$, 2 $, N. Territories, Kete-Krachi (Cardinall); Central African 

 Republic: i <$, 1 $, Fort Crampel (Le Moult); Uganda: 2 <$, Dokolo, 14.xi.1933 

 (Johnston); 2 <$, Budongo, xii.1964 (Brown); Rhodesia: i $, Umtali, ix-x.1953 

 (Shephard), in NMK. 



Cecidothyris parobifera sp. n. 



(PL 2, Q; PL 47, fig. 268; PL 68, figs 443, 444, 445, 446) 



o*. Wing, I4-5-I5-5 mm. Vertex reddish brown with white centre. Frons rounded. 

 Antennae strongly bipectinate. Thorax, patagia white, rest of thorax reddish brown irrorate 

 with white. Legs reddish brown with white bands round apex of tarsi and tibia. Terminal 

 claws of legs bifurcate (PI. 68, fig. 446). Fore wing, pattern as in PI. 2, Q, reddish brown with 



