198 



Maine Agricultural Experiment Station. 1917. 



width 38 inches) with top and sides of wire netting of the mesh 

 used for mosquito screen was placed over a white currant bush. 

 Soil was banked and tamped around the bottom of the cage to 

 prevent the escape of any of the flies but the ground under this 

 bush had not been disturbed. Table 8, shows a daily record of 

 emergence of male and female currant fruit flies in 1914. The 

 weather records were copied from the weather bureau reports 

 taken at the University of Maine. 



TABLE 8. 



Dates of Emergence of Adults in 1914. 



Date 







Total 



Maximum 



Minimum 







d" 



2 





temperature 



temperature 



Precipitation 



May 21 







1 



1 



82 



42 





22 







1 



1 



78 



57 





23 















74 



54 



.50 » 



24 















71 



44 



■ 



25 



3 



9 



12 



74 



48 





26 



6 



15 



21 



86 



54 





27 



8 



21 



29 



88 



61 





28 



16 



40 



56 



88 



59 





29 



62 



77 



139 



78 



40 





30 



25 



29 



54 



69 



46 







31 



32 



34 



66 



78 



38 





June 1 



38 



37 



75 



79 



55 



.11 



2 



14 



6 



20 



73 



45 





3 



14 



1 



15 



66 



37 





4 



« 



* 



« 



67 



40 



.31 



5 



4 



2 



6 



61 



42 



1.20 



6 



7 



3 



10 



70 



42 





7 



18 



6 



24 



63 



38 







8 



2 



l' 



3 



78 



45 



.14 



9 



2 







2 



72 



34 





10 















75 



46 



.10 



11 



1 

 252 , 



0, 

 283 



1 

 535 



84 



61 





* No record was taken due to heavy rains. 



Indicates a trace of rain. 



In the season of 1915, the dates of emergence of the adults 

 under natural conditions was again determined by placing cages 

 over or under currant and gooseberry bushes. Six cages cover- 

 ing 85 square feet of soil enclosed four red currant, one white 

 currant and one gooseberry bush. Eighteen ground cages with 

 top of screen wire and board sides covered 39 square feet of, 

 ground below currant and gooseberry bushes. Table 9, gives 

 a daily record of the emergence of male and female currant 

 fruit flies in these cages : 



