LIFE HISTORY OF THE CODLING MOTH IN MAINE. 



43 



Table XXXIV. — Time of emergence of moths of the first or summer brood, Winthrop. 



Me., 1914. 



Date of emergence. 



Aug. 11 

 Aug. 16 

 Aug. 17 

 Aug. 18 

 Aug. 20 

 Aug. 23 



Total 

 emer- 

 gence. 



Date of emergence. 



Total 

 emer- 

 gence. 



Aug. 27 



1 



1 

 1 

 1 



Sept. 2 



Sept. 3 . . 



Sept. 5 







13 



Time of oviposition. — As shown in Table XXXV, the first eggs 

 were deposited by the summer-brood moths on August 20. The last 

 oviposition occurred September 20. 



Table XXXV. — First or summer brood of moths , Winthrop, Me., 1914. 



CAGE r. 



CAGE II. 



Date. 



Number 

 of moths 

 emerged. 



Eggs 

 depos- 

 ited. 



Death of moths. 



Date. 



Number 

 of moths 

 emerged. 



Eggs 

 depos- 

 ited. 



Death of moths. 



Male. 



Female. 



Male. 



Female. 



Aug. 11 

 Aug. 16 

 Aug. 17 

 Aug. 18 

 Aug. 20 

 Aug. 22 

 Aug. 23 

 Aug. 24 

 Aug. 25 

 Aug. 26 

 Aug. 28 

 Aug. 30 

 Aug. 31 

 Sept. 2 



1 

 1 



2 

 2 

 2 









Sept. 2 

 Sept. 3 

 Sept. 5 

 Sept. 7 

 Sept. 10 

 Sept. 11 

 Sept. 12 

 Sept. 13 

 Sept. 14 

 Sept. 15 

 Sept. 18 

 Sept. 20 

 Sept. 21 

 Sept. 22 



1 

 1 



1 

































I 















...do... 

 ...do... 

 ...do.. 







...do... 







1 



■ 















...do... 

 ...do... 









.. do 













1 





...do... 

 ...do... 









Eggs.. 







2 

 1 



1 



2 





...do... 





1 

 1 



















2 







1 















9 



I 3 I 6 i 



3 





1 



2 



Number of eggs per first-brood female moth. — The total number of 

 eggs deposited by 8 female moths kept in confinement with male 

 moths was 181. Hence the average number of eggs per female was 

 22.625. 



LENGTH OF LIFE CYCLE OF THE FIRST GENERATION. 



The life cycle of the first generation of the codling moth is given in 

 two tables, Tables XXXVI and XXXVII. The life cycle considered 

 in these tables extends from the time of egg deposition to the emer- 

 gence of the moth and hence is not the complete life cycle. For the 

 complete life cycle there should be added to the figures recorded about 

 four days, which is the time from the emergence of the moth until the 

 first oviposition. As will be noted in the tables, the average life cycle 

 (stock-jar method) was 50.222 days; bagged-fruit method averaged 

 for 3 individuals 55 days. 



