PHLOEOSIHUS. n. sp . 

 Host - Incense cedar. 



This is a tiny straw-colored species attacking 

 young growth up to a"bout IS inches in diameter, and gener- 

 ally kills groups. The tree dies in one season. The inner 

 bark is entirely destroyed, the work resulting in a fine 

 yellow sawdust about the color of the beetle. The depreda- 

 tions last over a period of several years, at the end of 

 which they seem to completely die oni , probably due to the 

 increase of parasitic enemies. It is often associated with 

 another new species of Phloeosinus, nearly black in color, ; 

 about the same size, but the latter species seems to be con 

 fined more to the limbs or extreme tip of the triink. A smal : 

 Pityophthoms species often kills all the small limbs on the 

 upper part of the crown by girdling the branch where it joim 

 the trunk. The depredations of this beetle gave rise to the 

 theory that frost was killing the tops of mc,ny young cedars, 



The color at maturity of all of the above des- 

 cribed beetles has been given. Many of them which afterward 

 become black, especially most of the T>endrootonub and Ips, 

 are li^ht straw or light brown in color j\int after energing 

 from the pupal or dormant state, and may often oe found ver 

 active upon removing the bark. 



-37- 



