﻿UNITED STATES DEPARTMENT OF AGRICULTURE 



In Cooperation with Ih&Bureaa of Plan! Industry 

 Pennsylvania Department of Agricnlture 



DEPARTMENT BDILETIN No. 1357 



Wasbingtoii, D. C. T Janoary, 1926 



THE STRAWBERRY ROOTWORM 

 A NEW PEST ON GREENHOUSE ROSES 



By 



C. A. WEIGEL, Associate Entomologbt 



Fnnl Insect Investigations 



Bnrean of Entomology 



CONTENTS 



Sytleraatie History 2 



Economic History aad Food Plants ................•.•••• 3 



Recent Injury in Greenboose* ..••••••...... 4 



Distribation 6 



Nature of Injury and Economic Importance 6 



Life History and Habits • 8 



Seasonal History 25 



Natural Enemies .......••• 27 



Experiments in Control •.......• 27 



PreTcntiTe Measures ...............«....•..••.•« 45 



Summary 45 



Recommendations for Cinlrel ........................ 48 



Literature Cited 47 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1926 



