. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 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
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 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. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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