THYRIDIDAE OF AFRICA AND ITS ISLANDS 89 



Labial palps equal in length to diameter of eye, upturned, third segment 1/3 length of second. 

 Frons rounded, not projecting between eyes. Thorax brown, heavily irrorate with white 

 scales posteriorly. Hind tibia with outer spur of distal pair 1/2 length of inner. Fore wing, 

 pattern as in PI. 2, B, reddish brown with oval white areas. These oval areas usually with 

 indistinct brown line in them. Basal area whitish. Termen brown. Fringe reddish brown. 

 Underside similar. Radial veins from cell. Hind wing mostly white, traces of underside 

 pattern showing through. Terminal margin red, fringe white. Underside, darker than upper- 

 side, pattern as fore wing, basal area mostly white. Sc+R x approaches Rs but does not join. 



Genitalia <$ (PI. 33, fig. 181). Uncus simple. Gnathus weakly sclerotized with median 

 process. Lateral lobes of juxta rounded. Basal process on valve lightly sclerotized. Valve 

 simple. Aedeagus with small teeth on manica. 



$. Wing, 22 mm. Labial palps with third segment 1/2 length of second. Pattern as male, 

 colour similar, usually with more reddish tinge. 



Genitalia ? (PI. 55, figs 326, 327). Anal papillae short. Ostium lightly sclerotized, duct 

 slightly thickened near ostium. Bursa without signum. 



Discussion. Superficially this species has a similar wing pattern to Opula 

 scardialis but the white hind wings and the presence of spines on the tarsi immediately 

 separate these two species. R. lacunosa is closely allied to R. limatula Whalley from 

 Madagascar. The pattern of the Madagascan species consists of small round areas 

 which are silvery in colour. The genitalia of the two species are similar. There are 

 sufficient differences in structure to regard them as distinct species, but they are 

 undoubtedly very closely related. The Tanzanian specimen of lacunosa is larger than 

 the holotype and the aedeagus is broader. 



Distribution. Map 45. Tanzania; Rhodesia. 



Material examined. 



Holotype^, Rhodesia: Inyanga, 7000 ft, ii.1961, BM slide no. 9910, in NMR. 



Paratypes. Rhodesia: i $, Inyanga Distr., Pungwe River, 20.1.1951 (Fitzsimons) , 

 in TMP; 1 $, Inyanga, xi.1960, in NMR; 1 <J, 2 $, Inyanga, i.1962, 1 $ in NMR; 1 $, 

 Inyanga, 1963; 1 <$, Inyanga, i.1965, in TMP. 



Material not included in type series. Tanzania: i £, Mbeya, i-iii.1965 

 (Robinson). 



Rhodoneura (Rhodoneura) limatula Whalley 

 Rhodoneura (Rhodoneura) limatula Whalley, 1967 : 24, figs 35, 58, 59. 

 Distribution. Madagascar. Map 7. 



Rhodoneura (Rhodoneura) seyrigi Viette 



Rhodoneura seyrigi Viette, 1957 : I 7 2 - 



R. (R.) seyrigi Viette; Whalley, 1967 : 20, figs 31, 55. 



Distribution. Madagascar. Map 44. 



Rhodoneura (Rhodoneura) strix Viette 



Rhodoneura strix Viette, 1958 : 206. 



R. (R.) strix Viette; Whalley, 1967 : 21, figs 32, 57. 



Distribution. Madagascar. Map 45. 



