No. 115.] 105 



places from above its first limbs nearly to its base, extending 

 beneath the surface of the ground. The entire circumference of 

 the tree has been grooved, although not continuously. Circula- 

 tion is still maintained by winding around and among the barrows, 

 but one more season's work, will, it seems, take the life of the 

 tree. 



In a row of maples bordering a lawn scarcely a single tree is 

 entirely exempt from injury — all apparently the work of this grub. 

 If these injuries are to continue and increase, and I see nothing to 

 prevent it, our maples, which we prize so highl}', will share the 

 tate of the locust and be abandoned to the borer as too 

 unsightly a tree for ornamental use." 



The "beautiful Clytus" is a difficult insect to control, and very 

 many of the fine old maples, which have ornamented our streets 

 and aft'orded us so agreeable shade, have been or are being killed 

 by it. A few years ag(j it was a source of much pain to me to see 

 at Bennington, Yt., the large number of old maples that were 

 standing dead upon the street or rapidly dying from the merciless 

 burrows of this borer that had scarred and excavated their trunks. 

 Recently the same ravages, although not as yet to the same extent, 

 were observed by me at Glens Falls, N. Y. 



Probably the best method of arresting the ravages of this per- 

 nicious borer would be to watch for the commencement of the 

 operations and kill the young larva. The eggs are laid in July 

 and August. It is said that the place where the egg has been 

 deposited upon the bark of the trunk may be detected " by a rusty 

 discoloration of the bark about the size of a cent: and especially 

 by thefrassor castings which, to the length of an inch or more, are 

 attached like a broken corkscrew to the bark." The larvas 

 upon hatching burrow upward, remaining in the bark until the 

 following spring, when they leave the bark and burrow into 

 the solid wood. At this season of the year [October] tlie larvge 

 may be found beneath or not far from these discolored spots of 

 egg deposit. If by cutting into these tlie burrow is found to have 

 extended too far to follow it with the knife without injury to the 

 tree, a flexible wire may be used as a probe for reaching and 

 destroying it, as is done for the notorious apple-tree borer, Saperda 

 Candida Fabr. 



