A REVISION OF THE ETHIOPIAN DREPANIDAE (LEPIDOPTERA) 73 



- Eighth sternum with one pair of posterior processes ...... 9 



9 Processes of eighth sternum strongly arcuate ; aedeagus with lateral bulge, without 



apical spine (Text-figs. 132, 133) ....... cytnba (p. 82) 



- Processes of eighth sternum nearly straight ; aedeagus without lateral bulge but with 



short apical spine (Text-figs. 146, 147) ...... bispina (p. 89) 



Gonoreta subtilis (Bryk) comb. n. 

 (Text-figs. 110-117 ; PI. 7, fig. 297 ; Map 4) 



Lomadontophana subtilis Bryk, 191 3 : 9. 



Lomadontophana subtilis Bryk ; Gaede in Seitz, 1927 b : 290. 



Lomadontophana subtilis Bryk ; Gaede 1931 : 51. [Inaccurate fig.] 



Diagnosis. $, ?. Wing markings of upper surface obscure in male (Plate 7, fig. 297), 

 slightly more emphasized in female. Ground-colour of upper surface pale buff or pale reddish 

 buff ; markings more reddish. Ground colour of under surface of male dull greyish scarlet except 

 for buff costa on fore wing and buff basal half of hind wing ; trace of postmedial fascia on fore 

 wing. Under surface of female more yellowish than male. 



o" genitalia with distinctive aedeagus, asymmetric eighth abdominal sternum, and con- 

 spicuous lamellate seta on posterior margin of valve. Ductus bursae of female heavily sclero- 

 tized ; ventral lip of ostium emarginate ; two-pronged signum present, as in Text-fig. 144 of 

 opacifinis. 



Measurements. A.P.R. : 6*- 9 i 9- 7- (Wing measurements given under subspecies.) 



Discussion. The shape of the aedeagus and eighth abdominal sternum together 

 with similarities in colour-pattern suggest affinities with albiapex, but the distinctive 

 genitalia and small differences in the colour-pattern and in the coloration render 

 identification of both sexes an easy matter. 



Little individual variation is apparent in the material examined. The more 

 strongly marked colour-pattern of the upper surface of the females contrasts with the 

 obscurely marked wings of the males. 



Two subspecies are known : reali is known only from the Ivory Coast and Sierra 

 Leone while the nominate subspecies ranges from Angola across the Congo to the 

 Usambara Mountains of Tanganyika. No material was available from Nigeria 

 where it would be reasonable to expect the species to occur. 



Material examined. Type. Holotype <$, Tanganyika, West Usambara 

 (Weise) ; in the Zoologisches Museum, Berlin. 



Other material. (See under subspecies.) 



Gonoreta subtilis subtilis (Bryk) 

 (Text-figs. 110-113 ; Map 4) 



Diagnosis, o". ?• Separable from reali apparently only by the genitalia ; especially by the 

 eighth sternum and the pointed processes of the valve of the male (Text-figs. 1 10-1 12) and by the 

 less deeply emarginate ventral lip of the ostium in the female (Text-fig. 113). 



Measurements. Wing : <$. 19-0, 16-5-20-5 mm. (19) ; $. 20-0, 18-5-22-0 mm. (6). 



Distribution (Map 4). Known from Tanganyika, Kenya, Nyasaland, Congo, 

 Cameroun and Angola. 



