i 4 8 



R. W. CROSSKEY 



72 



74 



76 



73 



75 



77 



Figs. 72-77. Scutal pattern in African Simulium. 72, in $ of subgenus Wilhelmia. 73, in 

 $ of subgenus Tetisimulium. 74, in $ of subgenus Odagmia. 75, in $ of subgenus Odag- 

 mia. 76, in 6* of frozn's-group of subgenus Metomphalus. 77, in q* of a species of subgenus 

 Edwardsellum. (Outline shape of the scutum has been standardized for convenience.) 



