74 



BULLETIX 932, U. S. DEPARTMENT OF AGEICULTUEE. 



Table LI. — Time of emergence of codling moths of the second brood, from ma- 

 terial reared at the insectary, Grand Junction, Colo., 1916. 



Date of Num- 

 emer- ber o f 

 gence. moths. 



Aug. 



Date of 



Num- 



Date of 



Xum- , 



emer- 



ber of 



emer- 



ber o f ! 



gence. 



moths. 



gence. 



moths. 



Aug. 14 



18 



Aug. 20 



11 



15 



14 



21 



10 



16 



7 



22 



9 



17 



16 



23 



6 



18 



13 



24 



7 



19 



11 



25 



4 



Date of Xum- 

 emer- | ber of 

 gence. moths. 



Aug. 26 3 



27 2 



1 



1 



31 1 



Sept. 2 2 



Date of 

 emer- 

 gence. 



Sept. 3 

 4 



Total. 



Num- 

 ber of 

 moths. 



170 



Xu?7iber of eggs per female moth. — Included in this study were 

 86 female moths which were confined with 78 males in four cages. 

 As will be noted in Table LIT, 3,920 eggs were deposited, or 45.58 

 eggs per female moth. 



Time of oviposition. — Since only a comparatively small number 

 of moths of the second brood emerged each day, the maximum never 

 exceeding 16. it was thought best, for purposes of uniform manipu- 

 lation, to confine moths of several days' emergence in the same cage, 

 as shown in Table LII. It was therefore impossible to obtain accu- 

 rately the length of life of these moths and the period before, of, 

 and after oviposition. It will be noted, however, by reference to 

 this table and Table LIV, that the first oviposition by these moths 

 occurred August 12. three days after the first female moth emerged. 

 The last female died September 28, 7 days after the last egg was 

 deposited. 



Table LII. — Oviposition by codling ?noths of the second brood in rearing cages, 

 Grand Junction, Colo., 1916. 









Sex of 











Sex of 





Case 

 No. 



Num- 

 ber of 

 moihs. 



Date of 

 emer- 

 gence of 

 moths. 



moths. 



Total 

 number 

 of eggs 

 depos- 

 ited. 



Case 



No. 



Num- 

 ber of 

 moths. 



Date of 

 emer- 

 gence of 

 moths. 



moths. 



Total 

 number 

 of. eggs 

 depos- 

 ited. 



Male. 



Fe- 

 male. 



**J>2fc 





f 1 



Aug. 7 











f 9 



Aug. 22 









2 



Aug. 9 











6 



Aug. 23 









5 



Aug. 10 











7 



Aug. 24 







1 



9 

 5 



Aug. 11 

 Aug. 12 



• 20 



25 



1, 631 





4 

 3 



Aug. 25 

 Aug. 26 









7 



Aug. 13 











2 



Aug. 27 











16 



Aug. 14 









4 



1 



Aug. 2S 



1 21 



18 



571 





f 14 



Aug. 15 











1 



Aug. 29 









2 



6 

 16 

 13 



Aug. 16 

 Aug. 17 

 Aug. 18 



• 26 



23 



1,627 





1 



2 



1 



Aug. 31 

 Sept. 2 

 Sept. 3 









3 



11 



Aug. 19 











1 



Sept. 4 







10 

 10 



Aug. 20 

 Aug. 21 



1 U 



20 



91 





( 1 



Sept. 6 





































Total... 



164 





7S S6 



3,920 



Average number of eggs per female, 45.58. 



Length of life of moths. — As noted in the preceding paragraph, 

 it was impossible to obtain accurate data on the length of life of the 

 moths of the second brood, since the moths of several days' emergence 



