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 
Page 
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 
