THE COCCIDAE OF CALIFORNIA. 9 



Species. Host Plant. 



Aspidiotus juglans-regiae Comst. English walnut. 



*Aspidiotu8 ostreeeformis Curt. Pear, Apple. 



* Aspidiotus perniciosus Comiii. Apple, Pear, Peach, Quince, Apri- 



cot, Plum, Hawthorn, Rose, Cur- 

 rant, Raspberry, etc. 



* Aspidiotus perniciosus albopuncta- 



tus Ckll Orange, Plum. (From Japan.) 



Aspidiotus rapax Comst Willow, Holly, Ivy, Acacia, Orange, 



Pittosporum, Camellia, Palms, 



Ferns, etc. 

 Aspidiotus calif ornicus Col. Pinus sabiniana, P. ponderosa, P. 



lambertiana, P. attenuata. 

 Aspidiotus coniferarum shastfe Col. .Cupressus macnabiana. 

 Aspidiotus ehrhorni Col. Under lichens on Abies concolor, 



Libocedrus decurrens. 



Aspidiotus florencix Col Pinus ponderosa. 



Pseudaonidia duplex Gk\\. Camellia. (In Japanese nursery.) 



*Pseudaonidia pseonia Ckll Peony. (From Japan.) 



Chrysomphalus aonidum hinn. Palms. (In greenhouse.) 



Chrysomphahis aurantii Mask. Orange, Lemon, Grape-fruit, Rose, 



Cycas revoluta, and species of 



Palms. 

 Chrysomphalus aurantii citrinus 



Coq. Orange, Oleander, Palms. 



Chrysomphalus tenehricasus Comst. . .Maple, Apple. 



Targionia higelovioe Ckll. Bigelovia brachylepis. 



*Odona8pi8 hambusarum Ckll Bamboo. (From Japan.) 



Lepidnsaphes beckii Newm Orange, Lemon, Grape-fruit, Palms. 



Lepidosaphes crawii Ckll. Quercus cuspidatus. 



Lepidosaphes gloverii Pack. Orange. 



Lepidosaphes ulmi Linn. Apple, Pear, Plum, Willow. 



Parlatoria pergandii Comst Orange. 



DESCRIPTION OF THE MORE IMPORTANT SPECIES, WITH NOTES. 



Accompanying the descriptions of the more important species in the 

 following pages will be found a number of illustrations, which will give 

 the reader a fair idea of the general appearance of the different forms 

 of scale insects, as well as a colored plate showing members of each of 

 the principal subfamilies represented in California. 



For the convenience of the County Horticultural Commissioners and 

 Inspectors, as well as of others interested in this study, a number of 

 plates have been added, showing original drawings of the last abdom- 

 2-c 



