i 4 4 



R. W. CROSSKEY 



38 



40 



43 



44 



41 



42 



Figs. 38-44. Pupal characters of African Prosimulium s.l. 38-41, form of pupal gill in 

 (38 and 39) subgenus Procnephia ; in (40) muspratti-group of subgenus Paracnephia, 

 and (41) in brincki-gxoup of Paracnephia. 42, lateral view of pupal abdomen in Ethiopian 

 forms of Prosimulium. 43, form of pupal terminal hooks in most African Prosimulium. 

 44, form of pupal terminal hooks in brincki-gvoup of subgenus Paracnephia. 



