32 



INSECTS AFFECTING THE APPLE. 



The Flat-headed Apple-tree Borer. 



< 'hrysobothris femorata. 



This insect is very different, both in its adult and 

 larval states, from the one just discussed. The adult 

 beetle, instead of being cylindrical in form and 

 brown in color, is flattened and greenish-black. It 

 appears, however, at about the same season as the 

 other, and the life histories of the two species are in 

 general much alike, the principal difference being 

 that the present species requires less time to develop, 

 and attacks the tree higher up, being found all the 

 way up the trunk, and frequently in the larger 

 branches. 



The front end of the larva, which is illustrated at 

 Fig. 10, a, is enlarged and flat- 

 tened while the rest of the 

 body is much narrower, and 

 tapers slightly towards the 

 posterior extremity. It is of 

 a pale yellow color and has no 

 feet. The pupa (b) is at first 

 whitish, but becomes darker as 

 the beetle develops. As noted 

 above, the adult beetle (d) is of 

 a shining, greenish-black color, 

 and has short, stout legs. It 

 may often be seen basking in the sunshine in sum- 

 mer, on the sides of trees and logs. 



Flat-headed Borer. 



front (if 



Fig. 10. 

 a, larva ; 

 larva, lower side ; </. beetle 



b, pupa ; 



