96 A. WATSON 



Distribution. Known to occur in Sierra Leone, Ivory Coast, Ghana, 

 Nigeria, Cameroun, Angola, Congo and Uganda. Most of the records are from 

 the main rain-forest regions of the Congo Basin and West Africa but the genus also 

 occurs in areas of rain-forest and montane forest (e.g. goniata Watson) in Uganda. 



Key to Species 



Males 



i Antenna closely lamellate ; genitalia as in Text-figs. 164-166 . . rufinota (p. 101) 



- Antenna unipectinate ; genitalia not as above ....... 2 



2 Posterior margin of eighth abdominal sternum bilobed ..... 3 



- Posterior margin of eighth abdominal sternum entire ...... 6 



3 Outer angle of hind wings evenly rounded ........ 4 



- Outer angle of hind wing emarginate between 5c + i? x and Rs, angulate between Rs 



and M (Plate 9, fig. 305) ........ smithi (p. 106) 



4 Outer margin of fore wing as in Plate 9, fig. 306 ; fore wing fenestrations usually as 



extensive as in above fig. ; genitalia as in Text-figs. 167-169 . inangulata (p. 103) 



- Outer margin of fore wing more evenly arcuate (Text-figs. 153, 162) ; fore wing 



fenestrations usually much less extensive than in Plate 9, fig. 306 ; male genitalia 

 quite unlike that of above species (see Text-figs. 154-161) ; posterior processes of 

 eighth abdominal sternum small and digitate ....... 5 



5 Shape and venation of fore wing as in Text-fig. 153 ; genitalia as in Text-figs. 154-158 



fenestrate! (p. 96) 



- Shape and venation of fore wing as in Text-fig. 162 ; genitalia as in Text-figs. 1 59-161 



goniata (p. 101) 



6 Outer angle of hind wing acutely angled (Plate 9, fig. 307) ; genitalia as in Text-figs. 



176, 177 . . . . . . . . . subviridis (p. no) 



- Outer angle of hind wing usually obtusely angled (e.g Plate 9, fig. 308) ; genitalia not 



as above ............. 7 



7 Aedeagus with small lateral lobe ; innermost process at base of valve not hood-like . 8 



- Aedeagus without lateral lobe ; innermost processes at base of valve hood-like (Text- 



figs. 182, 184) ......... excentrica (p. in) 



8 Processes at base of valve as in Text-fig. 178 . . . . pianola (p. 108) 



- Processes at base of valve as in Text-fig. 187 .... miserrima (p. 112) 



Spidia fenestrata Butler 



(Text-figs. 153-158 ; PL 10, fig. 311 ; Map 5) 



Spidia fenestrata Butler, 1878 : 460. 

 Spidia fenestriculata Gaede, 1914 : 65. 

 Spidia fenestrata Butler ; Watson, 1957 : IX 4- 

 Hemictenarcha rubrisecta Warren, 1898 : 221. 



Diagnosis. This species is probably most closely related to goniata. The male genitalia of 

 these two species are similar in many respects but are easily distinguished by the shape of the 

 aedeagus and of the processes at the base of the valve. The male genitalia of the two subspecies 

 of fenestrata have already been illustrated (Watson, 1957), but for convenience they have been 

 re-illustrated, in part, (Text-figs. 154-158). Externally, fenestrata can be separated from 

 goniata by the more strongly arcuate costa, the venation of the fore wing (Text-fig. 153), and 

 by the less strongly pectinate antennae (A.P.R. = 18). 



Except for the differently shaped fore wing, the species inangulata is externally similar to 

 fenestrata but has distinctive genitalia. 



