REVISION OF AFRICAN SPECIES OF CLEORA 91 



Chogada acaciaria ab. innsitata Warren, 1898 : 248. Syn.n. 



Chogada subspnrcata Warren, 1898 : 248. 



Boarmia derogaria Snellen ; Swinhoe, 1904 : 532 [synonymy]. 



o*. First abdominal segment white ; remainder of vestiture buffy brown, irrorate with bister. 

 Wings buffy brown, irrorate and patterned rather obscurely with bister (PI. 12, fig. 345). Under- 

 side of wings tilleul buff densely suffused and heavily patterned with fuscous (PI. 12, fig. 346). 



o*. Genitalia (Text-figs. 121, 122). Uncus stout with a minute thorn-like tip ; scobinate 

 medial plate of gnathus almost rectangular, one-half as broad as cucullus ; apex of juxta 

 rugose ; apex of sacculus, triangular in section with one ridge setose, extends to about two- 

 thirds ventral margin of valve ; a cluster of minute setose, digitate processes at mid-valve 

 varying in number from four to six ; vesica with two stout, tapered cornuti fused at base, one 

 two-fifths and one three-fifths as long as aedeagus. 



$. Lighter in colour and with better defined pattern than male, ground colour of vestiture 

 and upperside of wings tilleul buff (PI. 12, fig. 347). Ground colour of underside of wings white 

 and much less suffused with fuscous than male (PI. 12, fig. 348). 



$. Genitalia (Text-fig. 120). Lamella postvaginalis with heavily sclerotized medial lobe ; 

 lamella antevaginalis with medial fold fused with colliculum ; anterior two-fifths of bursa 

 copulatrix ovate and membranous with two slight bulbous projections, remainder cylindrical, 

 ribbed and sclerotized. 



Measurements, <J 35-40 mm. ; 9 39~45 mm. 



The tone of the ground colour in the male varies from drab in the paler form to 

 buffy brown in darker examples ; the female varies in the extent of the dark 

 irroration. The darker form of the male and the well contrasted paler forms of the 

 female are readily recognisable by their colour and pattern. 



The genitalia of both sexes are similar in general pattern to those of rostella ; those 

 of the male differ in the shorter, stouter uncus, the broader medial plate of the 

 gnathus, the detail of the apex of the juxta and in the development of the sacculus ; 

 those of the female differ in the detail of the sterigma and in the proportionately 

 longer membranous part of the bursa copulatrix. 



Distribution (Map 5). Gambia ; Sierra Leone ; Ivory Coast ; Nigeria ; W. 

 Congo (Leopoldville) ; N. Angola. 



Material examined. Holotype $ of Boarmia derogaria Snellen (without abdomen) : 

 Banana, Afrika, v. Woerden, in Rijksmuseum van Natuurlijke Historie, Leiden. 



Lectotype $ of Boarmia obsitaria Mabille. From two male syntypes I select as 

 LECTOTYPEthe specimen labelled : Landana, Boarmia obsitaria Mabille, ex. Musaeo 

 P. Mabille 1923. Oberthiir Coll. Brit. Mus. 1927-3, genitalia slide Geometridae No. 



2135- 



Lectotype $ of Chogada subspnrcata Warren. From a series of 5 <$ and 4 $ 

 syntypes I select as LECTOTYPE the female specimen labelled : Warri, ix.1897 

 (Dr. Roth), Chogada subspnrcata Warren type $, Rothschild Bequest B.M. 1939-1. 



Holotype $ of Chogada acaciaria ab. inusitata Warren : Warri, vi.1897 (Dr. Roth), 

 genitalia slide Geometridae No. 2152. 



Gambia (A. Moloney), 2 <$, 3 $. Sierra Leone (C. R. Bartlett), 1 £. Ivory 

 Coast : Bingerville, 1-7.vii.1915 (G. Melou), 1 <$. At Sea : Between Old Calabar 

 and Accra (G. E. Bergman), 1 $. Nigeria : Warri, iv,vii-ix (Dr. Roth), 6 <$, 6 $ ; 

 Degema (Ansorge), 3^, 2 $ ; Niger Coast, 1 $ ; Opobo, 1 $ ; Rio del Ray, 12.x. 1931 

 (D. R. Rosevear), 1 $. N. Angola : Landana, 1 <$. 



