extend above and "below the egg chamber and are deeply groov- 

 ed in the sapwood. It may be distinguished from species of 

 Eccoptngaster by the absence of the chamber beneath the en- 

 trance hnle, and by the transverse gallery. 



Incense Cedar. 



OHRYSOBOTHRIS NIXA. FALL . 



(Plathead Cedar Borer.) 



Host - Incense cedar. 



This beetle is bronze brown, about one -half inch 

 in length and attacks portions of cedars, but seldom in suffi 

 cient quantities to kill the tree outright. The tree gener- 

 ally dies after repeated attacks in which other insects help, 

 extending over a period of years. It also breeds on all 

 freshly cut trees of this species. The larva or grub is lonf 

 with a flat head, the head being much wider than the rest o:? 

 the body and the segments tapering toward the anal segment. 

 The adult flies readily and may often be sern on unbar v ed 

 freshly cut cedar rails or dying trees. 



The eggG are laid in crevices of the barl~ and 

 like all flathead borers the larval gallerios in the cambiun 

 increase in diameter as the larvae grow- 



-36- 



