no A. WATSON 



Other material. Apart from the specimens collected in the Ivory Coast, several 

 specimens from Sierra Leone doubtless belong to this species, but may represent a 

 new subspecies. The latter examples have not been referred to in the description or 

 labelled as paratypes as more material of both sexes is required before their specific 

 identity can be definitely resolved. There is considerably more doubt about the 

 position of two specimens (Central African Republic and Ghana) which either 

 represent a new subspecies of pianola or a new species of Spidia close to pianola. 



Spidia subviridis (Warren) comb. n. 

 (Text-figs. 176, 177, 181 ; PL 9, fig. 307 ; Map 5) 



Phalacrothyris subviridis Warren, 1899 : 287. 



Phalacvothyris subviridis Warren ; Gaede in Seitz, 1927 b : 292. 



Phalacrothyris subviridis W'arren ; Gaede, 1931 : 52. 



Diagnosis. <J, ?. Similar to pianola and excentrica in coloration and colour-pattern, but 

 most specimens can be readily distinguished from both of the latter species by the more acutely 

 produced outer margin of the hind wing (Plate 9, fig. 307). The male genitalia have many 

 characters in common with those of pianola but differ in the shape of the uncus, gnathus, and the 

 more medial of the two pairs of vincular arms which are evenly tapered and non-spinose (Text- 

 fig. 176). In the female genitalia (Text-fig. 181) the shape of the post-ostial structures separates 

 subviridis from excentrica. 



Measurements. A.P.R. : 0*. 14 ; $. Not known (antennae broken). Wing ; -j\ 130, 

 11 0-14-5 mm. (6) ; 5. 160, 15-5— 16*5 mm. (3). 



Discussion. The close similarity in the genitalia between pianola and subviridis 

 suggests a probable monophyletic origin. They form a species-pair in the Ivory 

 Coast where they are apparently sympatric. 



There is considerable variation in the coloration of the upper surface of the wings 

 which may be one of many tones of grey or buff variously speckled with brown. 

 The fore wings of one male from Cameroun have dark brown streaks in the cell and 

 beneath the areole as in the holotype of pianola. The size and number of the hyaline 

 patches in both wings are also subject to much variation : in some specimens they 

 are absent in the hind wing. 



Distribution (Map 5). Known from the Ivory Coast, Nigeria, Cameroun 

 and the Congo. 



Material examined. Type. Holotype $, Nigeria, Warri, vii.97 (Roth) ; 

 Drepanidae genitalia slide No. 1164 ; in the British Museum (Natural History). 



Other material. British Museum (Natural History). Cameroun : 4 <$, 3 9. 

 Bitje, Ja River, 2,000 ft., iv-vi.1910, x-xi.1912, x-xi.1913 (Bates). Institut d'En- 

 seignement et de Recherches tropicales, Bondy. Ivory Coast ; 1 J, Adiopodoume, 

 16. i. 1955 (Real). Musee Royal de VAfrique centrale, Tervuren. Congo : 1 <$, 

 Flandria, 29.x. 1929 (Hidstaert). 



