N. J. Mosquito Extermination Association 55. 



economic species of mosquitoes occurring within the Hmits of 

 the state. It is thought that this study will result in devising a 

 mosquito trap which may take the place of the human collector 

 and be cheap enough that its use in large numbers will be prac- 

 tical, thus enabling us to set up a minute collection web on a 

 practical basis wherever a thing of this sort seems to be needed. 



INI^ORMATION THAT PROPER C6I.I.ECTI0N SH0UI.D GIVE. 



That invading broods of salt marsh mosquitoes can be recog- 

 nized and traced to source by either daylight or evening collec- 

 tions has been demonstrated a number of times. That broods of 

 house mosquito (pipiens) emerging from intensive and extensive 

 breeding places can be recognized and traced by evening collec- 

 tions has been demonstrated. That broods of the fresh water 

 swamp mosquito (sylvestris) emerging from intensive and ex~ 

 tensive breeding places can be recognized and traced to source 

 has been demonstrated. That small broods of the house mosr- 

 quitO' (pipiens) can be recognized by the minute web by evening 

 collections has been demonstrated in Passaic County. That the 

 utilization of the minute web by evening collections on a county- 

 wide basis is practical has not been demonstrated, and there is a 

 good deal of evidence to indicate that the procedure costs more 

 than the results are worth. That the study of the emanations of 

 the human body attractive to the mosquito opens up the possi- 

 bility of substituting mechanical appliances for the most difficult 

 variable factor, the human collector, in making mosquito col- 

 lections cannot be denied. That this substitution might solve the 

 problem of utilizing the minute mosquitO' collection web and thus 

 render the evening collection an excellent detective measure for 

 broods emerging from very limited but intensive breeding, seems 

 entirely within the range of possibility. 



IMPORTANCE OE INFORMATION COMING EROM MOSQUITO 

 COLIvECTlONS. 



The importance of information which may be obtained from 

 mosquito collections is difficult to overvalue, for the mosquito 

 chief who knows the mosquito fauna in this territory is not work- 

 ing in the dark. Striking an enemy which is not seen is a sure 

 way to waste money. Some of you may say that, after all, we 

 know mosquitoes breed in water and in water only, and if we 

 search out these breeding places by inspection systems and elimi- 

 nate them either temporarily or permanently as mosquito breeders, 

 we have done all that it is possible to do, and there is no par- 



