46 MOSQUITO ERADICATION 



distances — sometimes, according to Headlee, 1 as much as 40 

 miles. The same writer says of it: "It is the greatest single 

 factor now operative in South Jersey in depressing real estate 

 values and preventing the proper development of that section 

 of the State." The larvae, of a grayish color, are large and have 

 a respiratory siphon only about twice as long as broad. The head 

 is unmarked. The antennae, sprouting from the sides of the 

 anterior part of the head, are not pendant. The scales form a 



Fig. 45. — Adult of Aedes taeniorhynchus. (After John B. Smith, New Jersey 



Agricultural Experiment Slatiojis.) 

 1, adult female; 2, anterior claws; 3, anterior; 4, median, and 5, posterior 

 claws of male. All greatly enlarged. 



large patch on each side of the eighth segment. The race sur- 

 vives the winter in egg form in mud or damp earth. They are 

 able to withstand several months of dry weather, and develop 

 rapidly as soon as water covers them. Headlee 1 says that if the 

 water lasts only long enough for the larvae to turn into pupae, 

 the pupae will get enough moisture from the mud to enable them 

 to live long enough to reach the adult stage. He continues: 

 "Apparently, a considerable percentage of the eggs deposited 



1 'The Mosquitoes of New Jersey and Their Control," New Jersey Agri- 

 cultural Experiment Stations, Bull. No. 276, 1915. 



