34 



MOSQUITO ERADICATION 



Eggs of the Culex are laid vertically in rafts and are generally 

 of a brownish color, while eggs of the Aedes are laid in clusters 

 and gradually turn black. 



The larvae of Culex are easily distinguished from those of 

 Aedes by the air-tube; in the Culex, there are many hairs along 

 its posterior aspect, while in the Aedes, there is but a single tuft 

 near the end of the pecten. 



The pupae manifest few differences. 



Anopheles occidentalis, male and female. 



AEDES CALOPUS MEIG (STEGOMYIA FASCIATUS FAB.) 



Aedes calopus, the yellow fever mosquito, is very widely 

 distributed, it being found from 38° South to 38° North latitude. 

 As a rule, Aedes calopus prefers the lowlands, and is rarely found 

 in the higher parts of the South. 



The yellow fever mosquito is essentially a domestic mosquito, 

 breeding by preference in standing water about houses, such as 

 that in cisterns, barrels, tin cans, bottles, etc. Rarely, if ever, 

 is this mosquito found breeding in swamps, pools and streams, 

 the favorite haunts of the malaria mosquito. 



Although Aedes calopus may, as an adult, survive a brief 



