242 Peach-Growing 



of June the females of the first brood are mature. There 

 are three broods in the District of Columbia, probably four 

 or five in Florida. 



The white peach scale attacks practically all stone-fruits, 

 but its chief economic importance is as a peach insect. 

 Because of its rapid increase it is capable of doing much 

 damage. Its general effects on a tree are like those of 

 the San Jose scale. 



Methods of control. 



The methods of control given for the San Jose scale are 

 advised by Quaint ance ^ for this insect. 



Terrapin scale, or peach-lecanium {Eulecanium 

 nigro-fasciatum) 



In his discussion of this insect, Smith ^ has pointed out 

 clearly some fundamental differences between it and other 

 well-known scale insects of which the San Jose scale is the 

 most familiar. These differences are important from the 

 standpoint of control measures and are as follows : 



"This is locally known as the peach soft scale and, while in 

 a general way it has the same method of causing injury that 

 we find in the San Jose scale, there is a very great difference 

 between the two. The San Jose scale belongs to the armored 

 scales, in which the true scale forms only a covering that shelters 

 or protects the real insect that lies beneath it. Scale and insect 

 are quite separate and the covering scale can be removed with- 

 out necessarily disturbing the creature that lies beneath it. 

 In the soft scales, scale and insect are one, and the term scale 



1 U. S. Dept. of Agr. Yearbook, 1905. 



2 N. J. Exp. Sta. Bull. 235. 



