82 



NORTH AMERICAN DIPTERA 



LIFE STAGES OF MOSQUITOES 

 Culex Amopheles 



Aedes 

 Algypti 



— tUESWSISSi'^i^ 



The life stages of three different genera of 

 mosquitoes showing characteristic types of each 

 and resting position of the adults (After Pieper 

 and Beauchamp, from Metcalf and Sanderson). 



