LIFE HISTORY OF CODLING MOTH m PECOS VALLEY, ST. MEX. 9 



Table VI. — The making of cocoons by codling-moth larvae of the first brood, Roswell, 



N. Mex., 1912. 



Date of leaving fruit. 



Num- 

 ber 

 of in- 

 divid- 

 uals. 



Length of cocooning period in specified 

 days, being the time from the leav- 

 ing of fruit to the time of pupation. 



Aver- 

 age 

 days. 



Mini- 

 mum 

 days. 



Maxi- 

 mum 



days. 



Total 

 days. 





2 



3 



4 



5 



6 



7 



10 



11 



12 





2 

 3 



2 

 1 



1 



6 

 5 

 1 



1 

 2 

 4 

 4 

 3 

 3 

 2 











1 



1 







1 



9 



6.3 

 7.5 

 11 

 6 

 6 



4.13 

 6.4 

 6 

 3 

 4 



3.75 

 3.5 

 5 



4.3 

 4.5 



6 

 3 

 5 

 11 



6 

 6 

 4 

 4 

 6 

 3 

 4 

 3 

 2 

 3 

 4 

 4 



12 

 10 

 10 

 11 

 6 

 6 

 5 

 11 

 6 

 3 

 4 

 5 

 6 

 7 

 5 

 5 



18 



3 





1 









1 

 1 





19 



4 





1 







15 



5 













1 





11 



6 . ... 











1 

 1 







6 



7 



















9 



8 







5 

 1 



1 



2 











25 



9 







.... 



1 





1 





32 



10 







6 



11 





1 















3 



12 



2 

 1 

 1 



"2 

 1 















8 



13 



"2 



2 



"i" 



1 



1 

 1 













15 



14 



1 











14 



15 



1 









15 



16 









13 



19 

















9 























41 



2 



5 



13 



8 



6 



2 



2 



2 



1 



5.24 



2 



12 



215 



THE FIRST BROOD OP PUP^E. 



Time of pupation. — The earliest pupation of the first brood recorded 

 occurred June 1 and the latest July 11. (See Table VII.) 



Length of pupal stage. — From a total of 160 individual insects under 

 observation in this connection the results show that the pupal period 

 varied from 9 to 19 days, with an average of 12.11 days. These 

 figures are given in Table VII. 



Table VII. — Pupal stage of 



the 



first brood 



of the codling moth 



, Roswell, N 



. Mex. 



, 1912. 



Date of pupation. 



Num- 

 ber 

 of in- 

 divid- 

 uals. 



Length of pupal period in specified 

 days, being the time from date of 

 pupation to the emergence of moth. 



Aver- 

 age 



days. 



Mini- 

 mum 

 days. 



Maxi- 

 mum 



days. 



Total 





9 



10 



11 



12 



13 



14 



15 



16 



19 



days. 



June 1 



1 

 2 

 1 

 1 

 1 

 5 











1 











13 



12 



13 



12 



14 



14.2 



14.6 



13.8 



12.3 



12.4 



12.6 



12 7 



13 

 12 

 13 

 12 

 14 

 13 

 14 

 11 

 11 

 12 

 11 

 12 

 12 

 12 

 13 

 11 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 9 

 9 

 11 

 12 

 13 



13 

 12 

 13 

 12 

 14 

 16 

 16 

 19 

 14 

 13 

 14 

 14 

 15 

 13 

 13 

 12 

 12 

 12 

 11 

 11 

 11 

 12 

 11 

 11 

 10 

 9 

 9 

 11 

 12 

 13 



13 



24 



2 









2 











3 









1 











13 



4 









1 











12 

 14 



6 











1 

 3 



2 



"i" 









9 











1 



.... 



1 



.... 



71 



44 



83 



209 



62 



228 



344 



161 



10 



3 











11..... 



6 



17 



5 



18 



27 



12 



5 



1 



2 



11 



8 



3 



5 



5 



5 



4 



5 



2 







1 

 1 



1 

 11 



3 



6 

 9 

 2 

 2 



2 

 4 



2 



6 

 16 

 6 

 3 

 1 



12 







13 













14 







2 



4 

 2 



1 









15 













16 









3 







13 4 



17 













12.6 



13 



11.5 



11.2 



10.6 



10.3 



10.2 



10.6 



10.4 



10.2 



10.4 



10 



9 



9 

 11 

 12 

 13 



63 

 13 



18 

















19 







1 

 7 

 3 

 1 

 1 

 3 

 .... 



2 



1 

 3 













22 



.... 

 1 



4 

 2 



4 

 2 

 4 

 3 

 3 

 2 













123 



85 

 31 



23 













24 













25 















51 



26 















53 

 52 

 41 

 52 

 20 



28 



1 













29 













July 1 















2 















5 

















9 

 9 



8 



















9 





1 















11 



10 







1 













12 

 13 



11 









1 



d" 





























160 



2 



25 



24 



44 



44 



14 



4 



2 



1 



12.11 



9 



19 



1,939 



