CHAPTER XIII 



THE BREEDING PLACES OF STEGOMYIA. STEGOMYIA 



SURVEY AND INDEX 



THE STEGOMYIA CALOPUS 



This mosquito, wliicli lias been conclusively demon- 

 strated to be tlie sole transmitter of yellow fever, is 

 a very characteristic and familiar one throughout the 

 yellow fever zone. It is surmised, however, that it 

 was originally imported into the Southern United 

 States from the tropics through the medium of com- 

 mercial intercourse. It is common on the coast towns 

 along the Gulf, the Caribbean Sea, and on the Atlantic 

 coast of tropical and subtropical countries. It is, 

 tlierefore, a mosquito of the seaports, and this is one 

 of the reasons why it is so essential to eradicate it, 

 especially in view of the continual opening of new 

 ports througliout the tropics. It is capable of flourish- 

 ing over a wide area, and thrives in localities where the 

 temperature does not fall below 6° C. or 43° F. It is 

 not by any means exclusively confined to tlie coast 

 line, observations showing that in places where it is 

 capable of surviving the winter it readily spreads into 

 the interior, following the trade routes, whether rail 



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