130 



MISC. PUBLICATION 273, U. S. DEPT. OF AGRICULTURE 



and burn the infested trees or severely scorcli the bark. No control 

 TTork has been attempted in the West except in California for the 

 control of a species affecting ornamental Monterey cypress. Ap- 



JTM'^ 



Figure 04. — .^inun icUvvuud >eored by galleries of the ivdwuuil bark brcilr^ {J'hlutosinus 

 sequoiae) and a roundheaded borer (Semanotus ligneus var. sequoiae). 



proximately 20 species have been described from western cedars 

 and related trees. Many of these are rare and of little economic 

 importance. 



