952 Popular Editions of Station Bulletins. 



This species, the striped tree cricket, must be 



Raspberry classed definitely as an injurious species, as it appar- 



tree cricket ently feeds to a much smaller extent on other insects 



than the other two species, sometimes becomes 



numerous enough to do quite a little harm to raspberry foliage, and 



by its punctures so weakens the canes that they break from any 



unusual strain. In most cases only occasional canes suffer, but in 



some raspberry plantations, as much as three-fourths of the bearing 



wood has been found broken from the effect of the punctures or by 



the development of the raspberry cane blight fungus at these points. 



Even where the canes do not break, the ready entrance which the 



punctures offer to this fungus leads to death of the canes, for this 



disease is one of the most destructive and difficult to control of those 



affecting the raspberry. 



This makes it necessary to restrict the numbers of the striped tree 

 cricket as much as possible; for which the best measures are clean 

 culture, the destruction of weeds in and about raspberry or black- 

 berry plantations, and the removal and burning, during winter and 

 spring pruning, of canes that show tree cricket punctures. Should 

 these measures prove ineffective, it is probable that the crickets can 

 be completely controlled by systematic spraying during July and 

 August with arsenate of lead, three pounds to fifty gallons of water. 



