INSECTS INFESTING THE EILBERT 



The Filbert Scale (Lecanltim hemijiphcericuiti'i Chap. 151 



CHAPTER CLI. 



The Filbert Scale. (Cal.) 



(Lecanmm hemisphxricitm. — Targioni. ) 



Order, Hemiptera ; ^ t^ -i /-i 



Sub-order, Homoptera; \ ^""'"''^y^ Coccid.e. 



[A dark-brown hemispherical scale insect, or bark-louse, 



feeding upon the filbert and 

 orange trees, and on the 

 oleander and other orna- 

 mental trees.] 



I take the liberty of desig- 

 nating this species as the 

 "Filbert Scale" so as to 

 distinguish it from the soft 

 orange scale (L. hesperi- 

 dum) on account of the 

 similiarity of their techni- 

 cal names. 



Fig. 226.— Filbert Scale ; v 

 J, leaves infested b}^ this 

 scale ; 3a^ the adult female, 

 (Mdarged — color, brown. 



The filbert scale (Fig. 

 22(), -ia,) Avhen full grown is 

 of a dark Ijrown color, 

 hemispherical in form, and 

 measuring one and three- 

 quarters lines in length ; 

 width, one and a half lines ; 



Fig. 226. 



(MKUtX dd 



