UNITED STATES DEPARTMENT OF AGRICULTURE 



BULLETIN No. 911 



/ 



Contribution from the Bureau of Entomology 

 L. O. HOWARD, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



December 13, 1920 



LIFE HISTORY OF THE GRAPE-BERRY 

 MOTH IN NORTHERN OHIO 



By 

 H. G. INGERSON 



Scientific Assistant, Deciduous Fruit Insect Investigations 



CONTENTS 



Method of Conducting Rearing Work . 1 

 Weather Conditions in 1916, 1917, and 



1918 2 



Seasonal-history Studies, 1916 .... 2 



Seasonal-history Studies, 1917 ... . 7 



Seasonal-history studies, 1918 .... 24 



Miscellaneous Records 32 



Summary 37 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1920 



