IPS CONCINNU5, IIA.ITN. 



(Lodgepole Engra.er Beetle.) 



Host - Lodgepole pine. 



After Dendroctonus nonticolae this beetle is the 

 most injurious to lodgepole pine, killing occasionally all 

 stages of growth as the bark cf Inflgepole is never very thick 

 The habits and life history are much tho same as the Large 

 Engraver dps emarginatus) . The adult, however, is brov. r ner 

 than the latter, smoother and not quite so robust. The spe- 

 cies shows a decided preference for windfalls. The spotter 

 will, in most cases, be unable to tell this species from 

 many secondary species of Ips in lodgepole pine. Specimens 

 of engravers in lodgepole pine should be sent in to the 

 district office for identification. 



Firs . 



OKUq PSEUDOTSUGAE. HOPK . 



(The Douglas Pir Beetle.) 

 Host - Douglas fir. 



This Dendroctonuc has a smoother appearance than 

 the other spec ins. It shows a preference for breeding in d' 

 logs and stumps and does not often become epidemic in stand- 

 ing timber. It is, on the average, about the size of the 

 Ilountain Pine Beetle, of a blackish -brown cclrr and excavate 



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