48 



SCALE INSECTS OF SANTA CRUZ PENINSULA 



Genus ASPIDIOTUS Bouche. 



Aspidiotus aesculi Johns. 



Fig. 24. 



Originally described from this locality, where it is frequently abun- 

 dant on Aesculus californicus. It is usually associated with a pitting and 

 roughening of the bark, for which it is perhaps responsible. 



Fig. 24. Aspidiotus cesculi Johns. : pygidium of topotype specimen. 



I have at hand specimens from box elder (Acer negundo) and poplar 

 at Salt Lake City, Utah, and from poplar near Lone Pine, Inyo County, 

 Calif., which I refer to this species. As all these specimens agree also 

 with the description and figure of A. popularum Marlatt, which was de- 

 scribed from poplar in New Mexico, I place the latter species as a 

 synonym of cesculi. 



Aspidiotus arctostaphyli Ckll. and Rob. 



Fig. 25. 



What appears to be this species has been taken from Arctostaphylos 

 sp. near Los Gatos. The specimens are immature, and the determination 

 is not entirely certain, but the record may be accepted without much 

 doubt. 



The accompanying figure of this species is from a specimen from 

 Arctostaphylos sp., near Redding, Calif. Attention should be called to 



