108 A. WATSON 



Spidia pianola sp. n. 



(Text-figs. 178, 179 ; Map 5) 



Description. <$. (Based on a single specimen from the Ivory Coast.) Outer surface of 

 palp brownish buff. Front of head dark greyish brown, vertex pale buff. Antenna buff. 



Dorsal surface of thorax buff, ventral surface pale buff. Outer surface of all legs greyish 

 brown, inner surface pale buff ; fore legs darker on outer surface then remaining legs. Wing 

 shape as in Plate 10, fig. 309 of excentrica ; hind wing angulate at M 1 . Venation as for 

 fenestrata. Ground-colour of both wings buff, lightly speckled with dark brown. Upper 

 surface of fore wing with two dark grey costal markings ; dark reddish brown discocellular spot 

 and similarly coloured spots at posterior and anterior angles of cell ; dark reddish brown streak 

 extending from anterior angle of cell to about half-way along posterior margin of areole ; second 

 dark reddish brown streak extending from discocellular spot along middle of cell to base of wing ; 

 six greenish, iridescent patches in end of cell, distal to end of cell, between M 2 and M 3 , between 

 M 3 and Cu la between Cw la and Cu lb , and between Cu lb and \A (Cn la — Cn lb patch large, about 

 1 mm. in diameter ; remainder about half this size) ; faintly marked oblique postmedial fascia 

 from near apex to about half length of inner margin ; trace of dark subterminal markings near 

 tornus. Upper surface of hind wing with broad, weakly marked, reddish buff, antemedial fascia 

 continuous with postmedial fascia of upper surface ; dark reddish brown discocellular spot and 

 spot at posterior angle of cell ; small hyaline patch between M 3 and Cu la close to end of cell ; 

 reddish grey postmedial shade in posterior half of wing ; subterminal area of wing more reddish 

 than remainder of wing. Under surface of both wings very pale grey, lightly striate with dark 

 brownish grey wing ; slightly darker in middle of proximal half of wing and with trace of 

 postmedial fascia (not corresponding in position with postmedial fascia on upper surface) ; hind 

 wing with faintly marked postmedial fascia. 



o* genitalia as in Text-figs. 178, 179 (Ivory Coast <J). Eighth abdominal sternite similar to 

 that of excentrica (Text-fig. 183) ; valve with elongate, non-setose arm, and setose, digitate 

 process ; vinculum with two pairs of arcuate, heavily sclerotized arms ; aedeagus with lateral 

 lobe. 



$ (Ivory Coast specimen in the British Museum). Similar to male, but lacks reddish brown 

 streak in cell and along areole, there are relatively larger hyaline patches in fore wing, and a 

 hyaline patch between M 2 and M a as well as between M 3 and Cw la . 



$ genitalia similar to those of subviridis but more material isneeded forcomparison. 



Measurements. A.P.R. : <J. 11 ; ?. Not known (antennae broken). Wing : $. 15-0 

 mm. (1) ; $. 160, 15-17-0 mm. (2). 



Discussion. This species is probably most closely related to subviridis, from 

 which it can be separated, in most specimens, by the less acutely produced outer 

 margin of the hind wing (as in excentrica Plate 9, fig. 308) and by the spinose, 

 stouter, innermost vincular processes and the shape of the uncus and gnathus 

 (Text-fig. 178). The species pianola and subviridis apparently form a species-pair 

 in the Ivory Coast. 



Distribution (Map 5). Ivory Coast ; probably Sierra Leone ; possibly 

 Ghana and the Central African Republic. 



Material examined. Type. Holotype £. Ivory Coast, Bingerville, ix.1915 

 [Melon) ; Drepanidae genitalia slide No. 1162 ; in the British Museum (Natural 

 History) . 



Paratypes. British Museum (Natural History). Ivory Coast : 1 $. Institut 

 d' Enseignement et de Recherches tropicales, Bondy. Ivory Coast : 1 $, Adiopodoume 

 17.L1955 (Real). 



