THE MONTHLY BULLETIN. 



137 



Distribution. — Throughout the coast citrus belt of Southern Cali- 

 fornia. Also occurs in various places in the San Joaquin and Sacra- 

 mento valleys. 



Fig. 12 0. — Purple scale, Lepidosaphes beckii (Newm.), 

 on leaf. (Essig, Bull. 2, C. Pom. CI.) 



Food Plants. — All citrus species, fig, olive, croton, oak, Elceagnus, 

 Bauksia intcgrifoUa, Taxus cuspidata, C ercidiphyllum japonicum and 

 Pomaderris apetala are attacked. 



Control. — Fumigate with full schedule No. 1. This is usually done 

 when the black scale {Saissetia olece) is in good condition to kill. 



Natural Enemies. — The ladybird beetles, Orcus clialyteus, Scymnus 

 marginicollis, Lindorus lopanthce; the larvfe of the green laeewing, 

 Chrysopa calif ornica Coq., and brown lacewing, Sympherobius angustus 

 Bks., and the internal parasite, Aspidiotiphagus citrinus Craw., prey 

 upon this pest. 



