RHYN COP MORA 205 



One of the destructive species {Ilylastinus ohscurns) is a 

 borer in the roots of clover and occasions much injury to this 

 crop. 



Fruit-tree Bark Beetle (ScoIi/fN.s riKjulosus). — The fruit-tree 

 l)ark beetle is a common pest of orchard trees and the cause 

 of much injury. Its work becomes apparent in numerous 

 small round holes in the bark. Shot-hole borer is one name 

 for the species, based on this feature. 



The species of Dendroctonus are mainly destructive to 

 forest trees, and are responsible for extensive inroads on 

 our forest resources. 



