114 



BEETLES. 



this respect they do little harm, yet in other parts of 

 their life they do great damage. 



One kind of Pine Beetle bores up the shoots, and 

 another devours the leafage ; the Elm-bark Beetle 

 hastens the death of many a tree, which would have 

 stood long without the attack ; and the Ash-bark 

 Beetle pierces into good wood for its winter shelter. 

 It is highly desirable, therefore, not to allow useless 

 wood to be about, or infested logs, or trees to remain 

 to attract or spread attack; but the details of this 

 forest management we have not space for now. 



The next section of beetles of the division of the 

 Tetramera, or Pseudo-tetramera, is that of the Long- 

 horned Beetles (Longicornes), of which the grubs 



Fig. 89.— Musk Beetle. 



chiefly frequent timber. The Musk Beetle (Aromia 

 moschata), the narrow dark green Beetle, about an 

 inch, or rather more, in length, with two long thread- 

 like horns, gives a general idea of the appearance of 

 the Beetles of this section ; but we will pass on to 

 the more important one, to us, of the Turnip Flea 

 Beetles and their allies {Eupoda or Phytophaga). 



