A REVISION OF THE ETHIOPIAN DREPANIDAE (LEPIDOPTERA) 87 



Gonoreta opacifinis sp. n. 



(Text-figs. 141-144 ; PI. 7, fig. 296 ; Map 4) 



Description. $. Palp scarlet. Head scarlet except for buff dorsoposterior margin and 

 reddish brown medial patch anterior to base of antennae. Antennae buff. 



Dorsal surface of thorax pale purplish grey ; ventral surface of thorax buff, but with scarlet 

 anterior margin below eyes. Legs scarlet on front or outer surface, buff on inner surface ; fore 

 legs most intensely coloured. 



Colour-pattern of wings as in Plate 7, fig. 296. (".round-colour of upper surface of lore wing 

 purplish grey (holotype) reddish grey, or reddish buff distal to end of cell, reddish buff at base of 

 \\ in^ r , weakly striate ; costa orange-buff ; medial shade purplish grey (holotype) or reddish 

 brown ; cell-spots dark grey ; subterminal fascia reddish brown, less lustrous than rest of wing, 

 irregularly edged distally with white scales, especially at tornus which is dark purplish grey 

 (holotype) or reddish brown ; fringe reddish brown. Ground-colour of hind wings as for fore 

 wing proximally, but reddish brown and less lustrous distally posterior to Rs ; trace of medial 

 shade ; cell-spots white ; fringe reddish brown. Under surface of fore wing proximally orange- 

 scarlet posterior to cell but orange in and above cell ; reddish grey distal to end of cell, with 

 marginal, darker, purplish grey region between tornus and C« la ; speckled and striate with 

 purplish grey. Under surface of hind wing orange, becoming purplish grey distally and anterior 

 to cell ; speckled and striate distally and anteriorly. 



Abdomen as for corresponding adjacent surfaces of wings except for longitudinal, narrow, 

 scarlet band on either side. 



o* genitalia as in Text-figs. 141-143. Processes of eighth abdominal sternum massive, 

 multispinous ; diaphragma with ventrally directed, medial diverticulum (displaced to right in 

 Text-fig. 141). 



$. As for male. ? genitalia as in Text-fig. 144. 



Measurements. A.P.R. : q*- i° ; ?■ 9- Wing : q". 20-0, 18-5-21 o mm. (16) ; 

 ?. 23-5 mm. (1). 



Discussion. The similarity in the colour-pattern of the wings, the length of the 

 antennal pectinations and the shape of the apical part of the aedeagus suggest that 

 there may be close affinities between opacifinis and bispina, and that either bispina 

 (a Madagascan species) is a derivative of opacifinis or that at least these two species 

 have a common origin. The male genitalia (especially the shape of the eighth 

 sternum), the presence of a signum in the female genitalia, and the more conspicuous, 

 white-edged, subterminal fascia of the fore wing separate opacifinis from bispina. 



Individual variation in the coloration has been mentioned in the description. 

 Fresh specimens such as those recently collected in Uganda by R. H. Carcasson 

 clearly show this variation in the intensity of the coloration of the upper surface of 

 the wings. 



Distribution (Map 4) . Known to occur in Sierra Leone, Ivory Coast, Nigeria, 

 Congo, Uganda, and as far south as Southern Rhodesia. 



Material examined. Type. Holotype <J, Uganda, Ankole, Kalinzu Forest, 

 xi.1961 {Carcasson) ; Drepanidae genitalia slide No. 1367 ; in the British Museum 

 (Natural History). 



Paratypes. British Museum [Natural History). Congo : 1 $, Region de M'Pala 

 (Guilleme) ; 1 $, W. Kivu, Upper Lowa Valley near Masisi, forest and long grass, 

 5,000-6,000 ft., ii.1924 {Barns). Nigeria : 1 <$, Lagos, ii.1961 {Boorman) ; 1 $, 

 Ibadan, 29.lv. 1962 {Sutton). Ivory Coast : 4 <$, Bingerville, 1914, vii-viii.1914 



