

U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN No. 109, Part III. 



L. O. HOWARD, Entomologist and Chief of Bureau. 



PAPERS ON INSECTS AFFECTING VEGETABLES. 



THE IMPORTED CABBAGE WEBWORM. 







BY 



F? H. CHITTENDEN, Sc. D., 



In Charge of Truck Crop and Stored Product Insect Investigations. 



AND 



H. O. MARSH, 



Agent. 



Issued April 5, 1912. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE* 



1912. 



I 



