16 



BULLETIN 932, U. S. DEPARTMENT OF AGRICULTURE. 



Table VI. — O imposition of codling moths of the spring orood in rearing cages, 

 Grand Junction, Colo., 1915 — Continued. 







Sex. 



Date of— 



Total 



Number of days— 





















Num- 













num- 







From 



Cage 



ber 













ber 







date of 



No. 



of 





Fe- 

 male. 



Emer- 



First 



Last 



of eggs 



Before 



Of op- 



emer- 





moths. 



Male. 



gence of 



oviposi- 



oviposi- 



depos- 



oviposi- 



position 



gence 









moths. 



tion. 



tion. 



ited. 



tion. 



period. 



to last 























ovipos.- 























tion. 



70 



23 



10 



13 



June 7 



June 11 



June 20 



251 



4 



10 



13 



71 



25 



15 



10 



...do 



June 16 



June 16 



3 



9 



1 



9 



72 



27 



15 



12 



June 8 



June 11 



June 27 



250 



3 



7 



19 



73 



22 



13 



9 



...do 



June 18 



June 21 



10 



10 



4 



13 



74 



22 



7 



15 



...do 



June 21 



June 25 



7 



13 



5 



17 



75 



31 



18 



13 



June 9 



June 16 



June 26 



238 



7 



11 



17 



76 



29 



12 



17 



...do 



...do 



June 27 



52 



7 



12 



18 



77 



33 



13 



20 



June 10 



June 12 



June 23 



211 



2 



12 



13 



78 



31 



21 



10 



...do 



...do 



June 26 



100 



2 



15 



16 



79 



31 



18 



13 



...do 



June 15 



June 25 



367 



5 



11 



15 



80 



38 



16 



22 



June 11 



June 16 



...do 



134 







10 



14 



81 



29 



14 



15 



June 12 



...do 



June 23 



275 



4 



8 



11 



82 



9 



1 



8 



June 13 



June 19 



June 21 



7 



6 



3 



8 



83 

 84 



20 

 30 



10 

 13 



10 



17 



June 14 

 June 15 







il 



54 









June 18 



June 29 



3 



12 



14 



85 



32 



11 



21 



June 16 



June 19 



June 26 



129 



3 



8 



10 



86 



30 



13 



17 



June 17 



...do 



Julv 3 



293 



2 



15 



16 



87 



25 



7 



18 



June 18 



June 22 



June 30 



92 



4 



9 



12 



88 



25 



10 



15 



...do 



June 23 



Julv 1 



202 







9 



13 



89 



24 



10 



14 



June 19 



June 24 



July 4 



152 







11 



15 



90 



25 



11 



14 



June 20 



June 22 



July 1 



182 



2 



10 



11 



91 12 



92 9 



Average . . 



4 

 3 



8 

 6 



June 21 

 June 22 









 24 









June 27 June 27 



5 



1 



5 





6.19 



13.82 



19.14 



Maximum 











19 

 2 



33 



1 



37 



5 



1 























i Deposited on side of cage. 



Number of male moths 1, 007 



Number of female moths 1, 140 



Total number of moths 2, 147 



Total number of eggs 14, 359 



Average number of eggs per female moth 12. 59 



Length of life of moths. — The dead moths in the oviposition cages 

 were removed each day; their sex was then determined and the 

 length of their life computed. The results of these observations are 

 given in Table VII, in which it will be found that the average length 

 of life of 1,283 male moths was 14.59 days and of 1,462 female moths 

 15.86 days; the maximum length of life of the male moths was 36 

 days, of the female moths 39 days; the minimum length of life of 

 the male moths was 1 day, of the female moths 1 day. 



