5/2 THE STUDY OF INSECTS. 



row a short distance, and builds a plug of chips below it 

 The autumn winds break the branch from the tree. The 

 larva remains in its burrow through the winter, and under 

 goes its transformations in the spring. No one has ex 

 plained its object in severing the branch. The adult is i 

 plain, brownish-gray beetle. Whenever it becomes abun 

 dant its increase can be checked by gathering the faller 

 branches in the autumn and burning them before the beetles 

 have escaped. 



Subfamily Lamiin^E (Lam-i-i'nae). 

 The Lamiids {Lain i-tds). 



As in the preceding subfamily, the prothorax is roundec 

 with these beetles ; but the Lamiids are distinguished by 

 having the fore tibiae obliquely grooved on the inner side 

 and the last segment of the palpi cylindrical and pointed 

 The following are some of the more important species: — 



The Sawyer, Monohammus coitfusor (Mon-o-ham^mu: 

 con-fu'sor). — This beautiful brown and gray beetle is about 

 an inch and a quarter long, with antennae as long as the 

 body in the case of the female and twice as long- in 

 the case of the male (Fig. 696). The larva bores in 



the sound wood of 

 pine and of fir, mak- 

 ing a hole, when 

 full grown, one half 

 inch in diameter. 

 The pupa state is 

 passed within the 

 burrow. It some- 

 times occurs in such 

 numbers as to kill 

 the infested trees. 

 The Round- 

 FiG. 696. headed Apple-tree 



