the grub becomes full grown in this larval stage ; it is now a 

 large, white, legless creature, with the body composed of many 

 distinct rings or segments. It makes a cell near the outer 

 part of the tree in which it changes to the pupa or chrysalis 

 state ; and finally again changes into an adult beetle, which 

 comes forth in July and August to continue the propagation of 

 the species. 



This insect appears to confine its injuries to the sugar maple 

 (Acer saccharinum), apparently, seldom, if ever, attacking 

 the red maple. Further observations upon this point, how- 

 ever, are desirable. 



REMEDIES 



As already indicated, the entrance of these borers is gener- 

 ally shown by the brownish, saw-dust like castings thrown out 

 of the hole, and the larvas remain in the shallow bark from 

 September until the following spring. Consequently they can eas- 

 ily be cut out with a sharp knife, during autumn, winter, or 

 spring, with little or no injury to the tree. This appears to be 

 the most practical method of destroying them. Of course the 

 beetles and older larvae should be killed when found, and maple 

 trees -so seriously injured by this insect or from other causes 

 as to show evident signs of dying should be cut down and con- 

 verted into firewood, — the wood to be burned before summer 

 so that the larvae present shall not mature, — rather than be left 

 standing to serve as breeding grounds for the pests. 



