UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 427 



Contribution from the Bureau of Entomology 

 L. O. HOWARD, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



February 6, 1917 



THE POTATO TUBER MOTH 



By 



J. E. GRAF, Entomological Assistant, Truck Crop and 

 Stored Product Insect Investigations 



CONTENTS 



Historical 1 



Distribution 2 



Possible Origin 3 



Nature of Injury 4 



Economic Importance 6 



Classification and Synonymy 9 



Description , 9 



Food Plants 14 



Life History and Habits 15 



Natural Enemies and Checks .... 32 



Artificial Control 48 



Summary 51 



Bibliography . .' . 62 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1917 



