1905.] 



The Banded Pine Weevil. 



689 



3. The great means the forester has in proceeding against this 

 pest once it has got to work is the preparation of catch-trees or 

 decoy stems. These should be sickly plants or trees left here 

 and there in nursery or plantation ; or plants can be artificially 

 weakened and left standing-, or an older tree can be cut down 

 and allowed to lie as a place for breeding in. In consequence 



Fig. 3. — Young Pine killed by P. notatus. Bark 



REMOVED TO EXPOSE PUPAL BEDS WITH EXIT HOLES. 



(Two-thirds natural size. ) 



of the long-continued life and egg-laying, such trap plants 

 must be arranged and visited and renewed at intervals through 

 the year, from March till October. Each such trap might 

 remain for two months, when young trap plants should be 

 destroyed, or older ones barked and the exposed larvae de- 

 stroyed. Natural aids will be forthcoming from parasitic 

 Ichneumonidce. 



M M M 



