LIFE HISTORY OF THE CODLING MOTH IN MAINE. 



Time of egg deposition. — As will be seen in Table IV, the first eggs 

 of the spring-brood moths were laid on June 22, while the last ovipo- 

 sition occurred July 

 30. Hence the period 

 of oviposition was ap- 

 proximately 1 month. 

 The average number 

 of days from the time 

 of emergence to the 

 time of first oviposi- 

 tion was 4.086 days; 

 maximum, 14 days; 

 minimum, 1 day. The 

 average duration of 

 the oviposition period 

 was 14.086 days; max- 

 imum, 26 days; mini- 

 mum, 1 day. The 

 average number of 

 days from the date of moth emergence to the last date of oviposition 

 was 16.739 days; maximum, 27 days; minimum, 6 days. 



Table IV. — Oviposition by moths of the spring brood in rearing cages, Winihrop, Me., 



1913. 



co o <\i y- *0 CO 

 >> <V| (\i <V| <V| (\| 



JUNE JULY 



Fig. 2.— Diagram showing emergence of the spring brood of moths 

 of the codling moth in 1913 at Winthrop, Me. (Original.) 



Cage 

 No. 



Num- 



Sex. 



Date of— 



Number of days — 

















From 



ber of 

 moths. 



c? 



9 



Emer- 

 gence of 

 moths. 



First 

 ovipo- 

 sition. 



Last 

 ovipo- 

 sition. 



Before 

 ovipo- 

 sition. 



Of ovi- 

 position. 



date of 

 emer- 

 gence to 

 last ovi- 





















position. 





f 2 



1 





(June 18 



1 











1 



{ A 



} 9 



8 



Uune 20 

 [June 21 



Uune 22 



July 7 















2 



13 



9 



4 



June 22 



June 29 



July 2 



7 



4 



10 



3 



13 



9 



4 



June 23 



...do 



July 3 



6 



5 



10 



4 



19 



12 



7 



June 24 



...do.... 



July .9 



5 



11 



15 



5 



41 



16 



25 



June 25 



June 27 



...do.... 



2 



13 



14 



6 



24 



13 



11 



June 2G 



July 3 



July 8 



7 



6 



12 



7 



30 



16 



14 



June 27 



June 29 



July 14 



2 



16 



17 



8 



38 



12 



26 



...do 



...do.... 



July 24 



2 



26 



27 



9 



24 



11 



13 



June 28 



July 1 



July 13 



3 



13 



15 



10 



26 



8 



18 



June 29 



...do.... 



July 22 



2 



22 



23 



11 



25 



14 



11 



June 30 



July 2 



July 23 



2 



22 



23 



12 



25 



10 



15 



July 1 



July 3 



July 27 



2 



25 



26 



13 



18 



7 



11 



...do 



...do.... 



July 22 



2 



20 



21 



14 



31 



16 



15 



July 2 



July 4 



...do..,. 



2 



19 



20 



15 



14 



5 



9 



July 3 



July 5 



July 23 



2 



19 



20 



16 



28 



15 



13 



July 4 



...do 



July 22 



1 



18 



18 



17 



9 



6 



3 



July 5 



July 6 



...do.... 



1 



17 



17 



18 



13 



3 



10 



July 6 



July 8 



July 30 



2 



23 



24 



19 



11 



4 



7 



July 7 



July 11 



July 29 



4 



19 



22 



20 



5 



3 



2 



July 8 



July 18 



July 20 



10 



3 



12 



21 



5 



1 



4 



July 10 



July 17 



July 25 



7 



9 



15 



22 



4 



1 



2 



July 12 



July 15 



July 20 



3 



6 



8 



23 



3 



1 



2 



July 13 



July 17 



July 23 



14 



7 



10 



24 



4 



2 



2 



July 15 



July 21 



July 21 



6 



1 



6 



Number of ma 

 Number of fen 

 Total number 



le mo1 

 lale m 

 of mo1 



hs 204 



oths 236 



hs 440 



Average. 

 Maximur 

 Minimun 





4.086 

 14 

 1 



14. 086 



26 



1 



16. 739 

 27 

 6 

















