The Mosquitoes of New Jersey 



III 



Control of the Swamp-Mosquito Group 



The control of this group differs from that of the house group, 

 and drainage must necessarily play a large part. Breeding occurs over 

 much larger areas where larvicides could be only slightly effective. 

 Furthermore, M. pcrturbans can not be killed with oil because neith- 

 er larvae nor pupae come to the surface for air. Nothing but a 

 substance that mixes with the water can be successfully used. The 

 type of inspection necessary to find breeding of this species is rad- 

 ically different. One must pull up the tussock-forming grasses 

 growing in the suspected place and look for the larvae fastened to 

 the roots. Sometimes the larvae can be scraped off the mud with 

 a dipping net after the tussock grass has been pulled away. 



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Fig. 70. Typical breeding place of the Woodland-Pool Mosquito. 



The IVoodland-Pool Mosquito Group 



This, like the swamp group, is somewhat loosely defined, for cer- 

 tain species that generally breed in woodland pools, under some 

 conditions, breed in more open places. In general, however, the 

 woodland group winters in the tgg stage, produces a large brood 

 early in the season, and stays close to the place where larval life was 

 passed. Man is troubled by them only as he builds nearby or oth- 

 erwise penetrates their haunts when they are on the wing. 



