248 



INJURIOUS AND BKNKF1CI.W- INSECTS OF CALIFORNIA. 



Distribution. — Tliis beetle is generally distributed throughout the 

 State, but is most abundant in tbe northern part. 



Fig;. 237. — The larva of the white-lined scarabaeid, Poly- 

 phylla crinita Lee, and its work upon the roots of a younij 

 pea.r tree. Slightly reduced. (Original) 



Food Plants. — The native food plants are not known to the writer; 

 however the grubs were noted attacking the roots of young pear trees 

 to a considerable extent in Nevada County. 



Control. — This beetle is rarely injurious, and then not enough so as 

 to warrant the cost of control measures. 



