HOST INDEX TO CALIFORNIAN COCCIDAE 65 



Pinus sabiniana. 



Aspidiotus calif ornicus. 



Chionaspis pinifoliae — U. S. Dept. Agrcl. 



Pittosporum undulatum. 



Icerya purchasi. 

 Saissetia oleae. 



Platycerium sp.? ( Sta^jhorn Fern). 



Coccus hesperidum. In greenhouses — Ehrhorn. 

 Hemichionaspis aspidistrae. In greenhouses — Ehrhorn. 

 Pseudococcus longispinis. In greenhouses — Ehrhorn. 



Pluchea sp. ? 



Pulvinaria plucheae — U. S. Dept. Agrcl. 



Phiin — sec Pniiiits doi}Wstica. 



Plumbago sp.? 



Pseudococcus citri — U. S. Dept. Agrcl. 



Poinscttia — sec Euphorbia pulcherriuia. 



Populus sp. ? (Poplar, Aspen). 

 Aspidiotus perniciosus. 

 Chionaspis ortholobis. 

 Chionaspis salicis-nigrae. 



Populus deltoides (Cottonwood). 

 Aspidiotus camelliae. 

 Chionaspis ortholobis. 



Populus tremuloides. 



Aspidiotus ancylus — U. S. Dept. Agrcl. 



Privet — see Ligtistruiii. 



Prune — see Pruiius doinestica -cvr. galalciisis. 



Prunus amygdalus (Almond). 

 Aspidiotus camelliae. 

 Aspidiotus juglans-regiae. 

 Aspidiotus perniciosus. 



Prunus armeniaca (Apricot). 

 Eulecanium armeniacum. 

 Eulecanium pruinosum. 

 Saissetia oleae. 



Prunus cerasus (Cherry). 



Aspidiotus camelliae — Ehrhorn. 

 Aspidiotus juglans-regiae. 

 Aspidiotus perniciosus — Ehrhorn. 

 Eulecanium armeniacum. 

 Eulecanium pruinosum. 



Prunus domestica ( Plum ) . 

 .\s])idiotus hederae. 

 Aspidiotus juglans-regiae. 

 .\spidiotus perniciosus. 

 Chrysomphalus aurantii. 

 Epidias]iis pyricola. 

 Eulecanium armeniacum. 

 Eulecanium |)ruinosum. 



