it must have fresh or living bark in which to breed. The 

 beetle is black and shining. The egg galleries are produced 

 transversely from a small chamber, and seldom or never com- 

 pletely ring the stem. The egg gallery is heavily notched 

 on both sidec, an egg being deposited in each notch. The 

 larval galleries are extended longitudinally either Tip or 

 down, as the case may bo. Peeling the bark from dying firs 

 will disclose thece galleries deeply scored in the sapwood. 

 The beetle has the sane cut -nf f appearance as all the species 

 of Eccoptogaifter (Scolytus). It is just the opposite of Ipc 

 The abdominal segments are riot producer' as far as the elytra 

 or wing covers, giving a cut-off appearance underneath the 

 beetle. The species may be determined by the h^st trees, the 

 egg galleries produced transversely in opposite directions 

 frnm the small chamber under the entrance hole, and the cut- 

 off appearance under the wing covers. 



5CCOPTOGA3TER UNIS?inO?IJ3.. LEG. 



(Douglas Pir Girdle r.) 

 Host - Pceudotsuga taxifolia. 



This small black beetle attacks Douglas fir sap- 

 lings and tops of mature trees where the bark is thin. The 

 egg galleries are produced transversely from a small chamber 



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