18 BULLETIN 429, U. S. DEPARTMENT OF AGEICULTUEE. 



Table XVII. — Pupal stage of second brood codling moth, Rosvjell, N. Mex., 1912. 





Num- 

 ber of 

 indi- 

 viduals. 



Length of pupal period in days. 



Aver- 

 age 

 days. 



Mini- 

 mum 

 days. 



Maxi- 

 mum 

 days. 



Total 





8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



days. 



July 14 



15 



4 



5 



5 



7 



15 



15 



14 



16 



13 



2 



1 



9 



10 



11 



5 



3 



2 



14 



3 



8 



3 



1 



11 

 2 

 2 

 2 

 3 

 1 

 2 

 1 

 2 

 1 

 2 

 1 







12 



5' 

 2 



2 

 3 



1 

















10.4 

 10.5 

 10 

 10.2 

 11 



10.86 

 10.33 

 11.28 

 10.56 

 11.07 

 12.5 

 11 



11.44 

 11 



10.72 

 13.4 

 10 

 11 



10.92 

 11.33 

 11.12 

 10.66 

 9 



11.09 

 11 

 11 

 11 



11.66 

 12 



11.5 

 11 

 14.5 

 18 

 10 

 10 



10 



9 

 10 



9 

 11 



9 

 10 

 10 



9 

 10 

 12 

 11 

 10 

 10 

 10 

 10 



8 

 11 



8 

 11 

 10 

 10 



9 

 11 

 11 

 10 

 11 

 11 

 12 

 11 

 11 

 13 

 18 



9 

 10 



12 

 11 

 10 

 11 

 11 

 16 

 11 

 13 

 12 

 12 

 13 

 11 

 12 

 13 

 12 

 19 

 13 

 11 

 13 

 12 

 14 

 11 

 9 



12. 

 11 

 12 

 11 

 13 

 12 

 12 

 11 

 16 

 18 

 11 

 10 



156 



15 

















42 



16 



















50 



17 



2 



7 

 8 

 5 

 5 

 7 

 6 



















51 



18 - . 



















77 



19 



... 



"2" 



5 

 10 

 3 

 5 

 3 











1 









163 



20 

















155 



21 



5 

 2 



4 

 1 



1 















158 



22 















169 



23 

















144 



24 



1 















25 



25 









1 

 3 



7 

 4 















11 



26 



i' 





1 



2 

 5 

 2 



5 

 '2' 

















103 



27 



1 















110 



28 















118 



29 





2 













67 



30 







1 











30 



31 





2 



2 

 1 



2 

















22 



Aug. 1 



1 





6 



6 

 1 



1 















153 



2 















34 



3 



:;: 





5 

 1 





2 













89 



4 













32 



5 



















9 



9 





10 

 2 



2' 



2 



1 

















122 



10 























22 



13 







1 



1 

















22 



14 

















22 



16 









i" 



1 



1 















35 



17 





















12 



19 









1 

 1 

















23 



20 























11 



25 











1 















29 



26 

















18 



27 



... 



1 



... 1 















20 



31 



1 





















10 

























Total 



211 



2 1 S 



69 



86 



31 



7 



4 





2 





1 



1 



11.23 







2,314 













THE SECOND BROOD OP MOTHS. 



Time of emergence. — The records on time of emergence of codling 

 moths of the second generation may be found in Table XVIII. The 

 earliest emergence of this brood occurred July 18, when nine moths 

 emerged. Emergence continued more or less regularly until a 

 maximum number of 242 was reached on August 7. The last 

 emergence of which record was made occurred September 11. 



