LIFE HISTORY OF THE CODLING MOTH IN MAINE. 



21 



Table XV. — Time of oviposition of the first or summer brood of moths, Winthrop, Me., 



1913— Continued. 



CAGE NO. 2. 



Date. 



Number 

 of moths 

 emerged. 



Eggs de- 

 posited. 



Death of 

 moths. 



Date. 



1 



Number 

 of moths 

 emerged. 



Eggs de- 

 posited. 



Death of 

 moths. 



Male. 



Female. 



Male. 



Female. 



Aug. 17 











Sept. 4 



5 



6 



7 



8 



10 



12 



14 



15 



20 



22 



25 



26 



27 



28 





Eggs... 

 ...do 



2 



1 



18 











19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 Sept. 1 

 2 

 3 



2 

 1 









i 



...do.... 













...do.... 





2 











...do.... 







Eggs . . . 









...do.... 

 ...do.... 





2 

 1 

 1 



4 

 2 

 1 

 4 

 2 



do .. 







...do.... 





1 







1 



.do .. 







Eggs... 



...do.... 





1 







1 





do . 









...do.... 

 do . 









...do 











i 

 i 

 l 



i" 





.. do.... 





2 

 1 



2 







2 

 1 



...do.... 

 ...do.... 

 ...do.... 

 ...do.... 



2 

 1 











27 



10 



15 











Number of eggs per first-brood female moth. — This data was obtained 

 by dividing the total number of second-brood eggs (1,013) by the total 

 number of female moths kept in confinement. These figures show 

 that the average number of eggs per female was 53.316. 



LENGTH OF LIFE CYCLE OF THE FIRST GENERATION. 



In view of the fact that three methods of taking codling-moth feed- 

 ing records were used, it became necessary to give the life-cycle results 

 in three separate tables— Tables XVI, XVII, and XVIII. These 

 tables include the life cycle of the insect from the time of egg deposition 

 to the emergence of the moth and, as recorded therein, the life cycle 

 according to the stock-jar method was 47.818 days; watered stock-jar 

 method, 53.500 days; bagged-fruit method, 54 days. The complete 

 life cycle extends from the time of the deposition of the egg of one gen- 

 eration to the deposition of the egg of the next generation. Hence, 

 in order to get the number of days for the complete life cycle the time 

 elapsing from the emergence of the moth to the first oviposition — 

 approximately 4 days — should be added to the above figures. 



