The Locust Borer 



THE LOCUST BORER 



(Cyllene robiniae, Forst.) 



C. E. SANBORN 



H. R. PAINTER 



INTRODUCTION 



The growing of first-class locust trees in this State is a difficult 

 problem on account of the damage done by the locust borer. (See 

 frontispiece.) This is one of the most injurious pests of the locust 

 tree. The tree is well adapted to this country and is grown quite ex- 

 tensively, but unless insect damage is controlled to a greater degree 

 in the future than in the past, there will be no profit in the growing 

 of locust trees. 



Locust trees may be extensively mined by the borers and yet not 

 readily succumb. The injury, however, renders the trees unfit for 

 posts. In Oklahoma many of these trees are grown for posts as well 

 as for shade.. 



Figure 1 Adult locust borers; females above, males below; slightly enlarged 



