INSECTS INFESTING THE RASPBERRY. 209 



the bushes at a distance of from four to six inches from the 

 ground. As soon as hatched, the young borer enters the stem 

 to the pith, and then directs its course downward to the roots, 

 which it reaches at the approach of Winter. Here it remains 

 until the following Spring, when it directs it course upward, 

 burrowing out a different stem than the one by which it had 

 entered the roots. After attaining its full growth it prepares 

 a place of exit, and soon afterward assumes the pupa form. 



I have only found one specimen of the larva of this species 

 and have had specimens of roots sent me from which the 

 borer had matured. 



Remedy. — Use No. 37 in the latter part of June and early 

 in July ; or No. 5 or 7. 



CHAPTER CXXIV. 



The Raspberry-root Gall-fly. 



{RhoditeK radicum. — Osten Sacken.) 

 Order, Hymenoptera ; Family, Cynipid^e. 



[Living in a large swelling on the roots of raspberry bushes ; 

 small whitish footless grubs.] 



If one of these galls were to be cut open, it would be found 

 to be composed of a yellowish pithy substance, and scattered 

 through it are a number of small cells, each containing a 

 small white larva or grulx These soon change to pu^jpe, 

 which in turn produce the perfect flies ; and the latter gnaw 

 their way out of the gall, leaving small holes to mark their 

 places of exit. — Condensed from Saunders. 



CHAPTER CXXV. 



The Raspberry Borer. 



( Agrilu.s ruficoUis. — Fabricius. ) 



Order, Coleoptera ; Family, Buprestid.e. 



[Living in the stems of raspberry and blackberry bushes, 

 producing a gall-like swelling; a pale yellow footless grub. 



