18 BULLETIN 911, U. S. DEPARTMENT OF AGRICULTURE. 



TIME OF COCOONING OF SECOND-BROOD LARVAE. 



The dates on which larvae were leaving the grapes and spinning 

 cocoons are shown in detail in Table XXV. 



Table XXV. — Time of cocooning and number of cocoons of the second 'brood of the 

 grape-berry moth, Sandusky, Ohio, 1917. 





Dates of collection of larvee. 



Date of cocooning. 



August — 



September — 



— " 



30 



30 



30" 



2 



3 



3 



6 



Sept. 7 





1 



1 



1 









8 











9 





1 





1 





1 

 1 





10 











11 







1 









12 

















13 





2 

 1 

 1 

 1 

 2 

 1 

 1 

 2 

 1 

 2 



1 

 2 

 1 

 2 

 2 

 1 

 3 

 9 

 5 

 9 

 5 

 10 

 8 



2 

 1 

 1 

 2 

 1 

 1 

 1 

 2 

 3 

 3 

 2 

 8 







14 







1 

 2 





15 



1 

 1 



1 





16 





17 









18 







2 





19 



1 



1 

 2 

 5 

 

 5 

 5 

 5 

 8 

 5 

 7 

 5 

 1 

 8 

 3 

 2 

 6 



1 

 1 

 1 

 

 3 

 8 

 8 

 2 

 8 

 4 

 6 

 2 

 1 

 6 

 9 

 4 





20 



7 

 1 

 2 

 3 



10 

 3 

 9 

 7 



11 

 3 

 1 

 2 

 2 

 4 

 5 

 2 





21 



1 



22 



1 



23 



1 



24 



2 

 4 

 1 

 3 

 9 

 2 

 2 

 4 

 2 

 4 

 1 

 10 



7 



25 



4 



26 



5 j 1 



6 R 



3 



27 



5 



28 



5 

 3 



5 

 2 

 4 

 7 

 5 

 6 



7 

 4 



12 

 2 

 3 



10 

 6 

 3 



10 



29 



7 



30 



6 



Oct. 1 



4 



2 



4 



3 



8 



4 



6 



5 



5 



6 







7 



4 



2 



1 



2 



3 

 1 



2 

 2 



2 



4 





1 



8 



2 

 2 



7 



9 



1 





1 



10 



2 

 2 





1 



5 

 2 



1 



11 



2 





2 

 4 



2 



12 







1 



13 









1 

 9 

 5 

 3 

 2 

 5 





15 



16 



4 



7 



7 

 6 

 3 

 5 

 3 



3 

 5 

 1 

 3 

 6 



10 

 10 

 1 

 8 

 13 



6 

 3 

 2 

 4 

 5 



3 

 1 



17 



3 



18 





4 



19 



4 



14 



20 





21 











1 

 1 







22 















23 







1" 







24 















25 















28 















27 















28 









1 







23 













30 





4 







2 





31 





























10 



































Oct. 22 



Nov. 10 



Nov. 10 



Nov. 21 



Nov. 10 



Nov. 10 



Nov. 10 







