58 



BULLETIN 932, U. S. DEPARTMENT OF AGRICULTURE. 



Table XXXVIII. — Time of pupation of transforming codling moth larvw of the 

 first brood, Grand Junction, Colo., 1916. 



Date of 

 pupation. 



Num- 

 ber of 

 pups. 



Date of 

 pupation. 



Num- 

 ber of 

 pupfe. 



Date of 

 pupation. 



Num- 

 ber of 

 pupae. 



Date of 

 pupation. 



Num- 

 ber of 

 pupae. 



Date of 

 pupation. 



Num- 

 ber of 

 pupae. 



June 25 

 27 

 28 

 29 

 30 

 July 1 

 2 

 3 

 4 



3 



2 

 6 

 13 

 12 

 17 

 27 

 21 

 36 



July 5 



6 



7 



8 



9 



10 



11 



12 



13 



49 

 41 

 50 

 22 

 48 

 41 

 37 

 43 

 32 



July 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 



23 

 14 

 35 

 37 

 26 

 28 

 30 

 21 

 7 



July 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 



7 

 12 

 2 

 5 

 3 

 4 

 1 

 3 

 3 



Aug. 1 

 2 

 6 

 7 

 11 



Total.. 





766 



Length of the pupal stage. — The data pertaining to the length 



of the pupal stage of first-brood pupse began with the individuals 



that transformed June 25 and ended with the larva that pupated 



August 6. During this interval the variations in climatic conditions 



were not pronounced and, as a result, the range in the pupal period 



is not as great as with the spring-brood pupse, it being from a 



minimum of 6 to a maximum of 19 days, with an average of 11.23 



days. Out of a total of 638 pupae, 284 had a pupal period of 12 days. 



For further details see Table XXXIX. 



Table XXXIX. — Length of the pupal stage of codling moth pupce of the first 

 brood, Grand Junction, Colo., 1916. 



Date of 

 pupation. 



Num- 

 ber 

 of 

 indi- 

 vidu- 

 als. 



Length of the pupal stage in specified days. 



6 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



19 



June 25 



27 



28 



29 



30 



July 1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



21 



25 



26 



27 



28 



29 



30 



31 



Aug. 1 



2 







3 



2 



6 



12 



12 



17 



26 



20 



35 



46 



39 



49 



22 



47 



39 



36 



42 



30 



21 



13 



34 



37 



25 



26 



29 



21 



7 



7 



12 



2 



4 



3 



4 



1 



3 



3 



1 



1 



1 









1 

 1 

 2 

 1 

 2 



1 

 4 

 7 

 9 

 8 



10 

 5 



15 

 8 

 3 

 7 

 4 



13 

 4 

 6 

 8 

 8 

 4 

 5 

 8 

 4 

 2 

 4 

 1 



2 























































4 

 1 

 8 

 9 

 9 



15 



22 



21 



17 



7 



22 



20 



20 



21 



7 



11 



4 



15 

 13 

 9 

 7 

 5 

 7 

 1 

 1 

 2 







































1 



4 



2 



1 



14 



14 



23 



9 



9 



13 



9 



8 



14 



4 



1 



6 



15 



7 



10 



14 



12 



5 



3 



3 

















1 



2 

 2 

 2 

 2 

 1 















1 

 1 







1 







1 







































2 

 1 

 1 

 1 





















1 













2 

 1 



1 

 1 









































3 

 1 









1 





















2 

 3 

 3 

 1 

 1 

































2 

 4 

 6 

 5 

 8 

 2 

 1 

 2 

 4 

 1 

 1 

 1 

 1 

















































1 



























































1 

 3 

 1 





















































3 

 1 



2 



















1 

























1 















1 

 1 

 1 















1 







1 



















2 

 1 

 1 





























































1 































<i38 



1 



2 



1 



31 | 149 



284 



108 



52 



6 



2 



1 



1 



Days. 



Average length of the pupal stage 11. 23 



Maximum length of pupal stage 19 



Minimum length of pupal stage 6 



