48 



MOSQUITO ERADICATION 



during any one season fail to hatch during that season and remain 

 in the mud until the following one. By this provision of nature, 

 the salt marsh is always stocked with eggs, and the appearance 

 of the brood is a matter of water covering, high temperature and 

 the absence of fish." 



Aedes taeniorhynchus Wied., is a small, black insect, with 

 narrow white bands around the proboscis, the bases of the 

 abdominal segments and the bases of the tarsal joints, except 

 the last, which is wholly white. The larva may be distinguished 



Fig. 47. — Culex salinarius, female. (After 

 Howard.) 



Fig. 48. — Culex salinarius, male. 

 Howard.) 



(After 



from that of A. sollicitans by the fact that the head is usually 

 slightly marked. Like A. sollicitans, and A. cantator, this mos- 

 quito does not breed in permanent marshes, but in temporary 

 pools of comparatively fresh water along the coast; usually, A. 

 taeniorhynchus selects less salty water than A. sollicitans. Other- 

 wise, the habits of A. taeniorhynchus are similar to those of 

 sollicitans, except that it is not believed to travel so far. 



Aedes cantator, Coq., is a large, brownish mosquito with a hairy 

 thorax; the bases of both the tarsi and the abdominal segments 

 have a faint, white band about them. The head of the larva 

 has black spots; otherwise, the larva is similar to that of A. 

 sollicitans. A. cantator usually selects somewhat fresher water 

 than does sollicitans, but not quite so fresh as does taeniorhynchus, 

 its choice apparently being the "back pools," containing a large 

 admixture of fresh water. 



