INSECTS AFFECTING THE PLUM. 



INJURING THE TRUNK. 



The Plum-tree Borer. 



Aegi via pidipes. 



This insect is seldom abundant enough to do seri- 

 ous injury. The adult is a beautiful, clear-winged 

 moth, closely related to the Peach-tree Borer, to 

 which it is similar in life-history and habits. It is 

 represented, considerably magnified, at Plate II, 

 Fig. 7. 



The larva of this insect works mainly in the trunk 

 and branches of the plum, gnawing the inner bark 

 and sapwood. It also affects the wild black and wild 

 red cherry, and is likely occasionally to lie found in 

 the cultivated cherry. 



Remedies. — The remedy usually recommended 

 for this pest is that of cutting out the larva' with a 

 sharp knife, according to the plan commonly adopt- 

 ed for the Peach-tree Borer. 



INJURING THE LEAVES. 



The Plum-tree Aphis. 



Aphis prunifolii. 

 The leaves of plum trees are frequently crowded 

 in spring by small, dark-colored, soft-bodied insects 



