LIFE HISTOEY OF CODLING MOTH IN PECOS VALLEY, N. MEX. 



61 



Table XL VI. — Length of pupal stage of the codling moth in days of all individuals devel- 

 oping from eggs deposited on specified dates, second brood, Rosivell, N. Mex., WIS. 



Date of egg depo- 



Num- 

 ber of 

 indi- 

 \-iduals. 



Length of pupal stage in days. 



Aver- 

 age 

 days. 



Mini- 

 mum 

 days. 



Maxi- 

 mum 

 days. 



Total 



sition. 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



days. 





12 



2 



13 



25 



14 



18 



33 



23 



31 



17 



23 



38 



26 



26 



5 



13 



23 



12 



15 



14 



6 



1 



3 



2 



7 



2 









5 

 1 



' 



2 



















10.8 

 9.5 

 11.5 

 11.1 

 11.6 

 12.0 

 12.2 

 12.3 

 11.2 

 11.5 

 11.4 

 11.6 

 11.3 

 11.1 

 11.8 

 10.4 

 11.2 

 11.5 

 11.4 

 10.8 

 10.8 

 9.0 

 10.0 

 11.0 

 9.4 

 11.0 



10 

 9 



11 

 7 

 9 

 9 

 8 



10 

 9 

 9 



10 

 9 



10 



10 



10 

 9 

 9 

 9 

 9 

 9 

 9 

 9 



10 



10 

 8 



10 



12 

 10 

 13 

 13 

 15 

 16 

 19 

 16 

 15 

 14 

 14 

 17 

 14 

 16 

 17 

 15 

 20 

 17 

 19 

 12 

 14 

 9 

 10 

 12 

 11 

 12 



129 



12 







1 



















19 



13 



5 

 5 

 5 

 4 

 6 

 1 

 14 

 10 

 10 

 16 

 10 

 17 

 2 



5 

 11 



5 

 4 

 5 



2 



3 



8 

 4 

 6 

 13 



15 

 6 

 3 

 6 



7 

 7 

 4 



1 

 4 

 2 

 2 

 3 

 4 

 3 

 2 



1 

 3 



2 

















104 



14 







2 

 1 



9 



5 

 1 



1 

















278 



15 



i' 



i" 



2 

 3 



1 



1 



1 

 3 



i' 













163 



16 



2 



i" 











217 



17 . 



.«; 





1 







401 



18 





1 



6 



283 



19 







1 











349 



20 



1 



'4' 

 3 

 6 













195 



21 















263 



22 







2 



3 





1 









451 



23 









294 



24 









4 





1 











291 



25 









2 

 3 



8 

 4 

 6 

 4 



2 









1 









59 



26 







4 

 1 

 1 

 1 

 1 

 1 

 1 









1 











136 



27 



1 









1 



2 









259 



28 











138 



29 



2 

 4 









1 











171 



30 









152 



July 1 





1 















65 



3 















9 



6 







3 



1 

 2 

 1 























30 



7 









.... 



1 



















22 



9 





1 



3 



















66 



12 



1 



















22 































400 



1 



2 



23 



78 



143 



93 



27 



9 



U 



4 



5 



1 



2 



1 



11.6 







4,566 











LENGTH or LIFE CYCLE. 



The length of time elapsing from the date of egg deposition to 

 emergence of moth of the same generation for 407 individual insects 

 is shown in Table XL VII. Of this number one insect completed the 

 life cycle in 28 days, while the longest time recorded was 59 days. 

 .Vn average period of 41.4 days is described for the entire number 

 observed, being 5.5 days shorter than the corresponding period of 

 the first generation, and 0.14 day greater than the length of life cycle 

 of the second generation of the insect as observed during the season 

 of 1912. 



