RASPBERRY, BLACKBERRY AND DEWBERRY INSECTS 333 



into the pith and usually burrows upwards, hibernating in the 

 pith several inches from the point of entrance. It is then a 

 yellowish-white, slender, somewhat flattened grub, about | 



Fig. 292. 



Full-grown red-necked cane-borer 

 larvae ( X 3) . 



to f inch in length, with a brownish head 

 (Fig. 292) ; the tip of the abdomen is pro- 

 vided with two brown hooks. Early in 

 the spring it completes its growth and 

 transformxS into a whitish pupa in an oval 

 cell in the pith. The beetles emerge from 

 May till July. 



This pest may be controlled by cutting 

 out and burning all infested canes during the fall, winter or 

 early spring. This work can be done best while pruning the 

 bushes. All wild or neglected berry bushes in which the 

 beetles may breed should be destroyed. 



Fig. 293. — A red 

 raspberry cane showing 

 the spiral course of the 

 burrow ; the more nor- 

 mal form of the gall on 

 blackberry. 



References 



Smith, Ins. Life, IV, pp. 27-30. 1891. 



N. J. Agr. Exp. Sta. Spec. Bull. N., pp. 4-8. 1891. 



W. Va. Agr. Exp. Sta. Bull. 15. 1891. 



Ohio Agr. Exp. Sta. Bull. 44, pp. 191-193. 1893. 



