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THE SAN JOSE SCALE. {As])i(lii)tus })ernic'wus Comstock.) 
This is the most dreaded of the insect pests of the apple 
orchard. As yet there has been no authentic record of its 
occurence in any of the orchards of this State, but it has 
been a most destructive orchard pest in California, Oregon, 
Washington, and in several of the eastern and southern 
states. It is transported from place to place almost entirely 
upon nursery stock and the utmost care should be exercised 
to prevent its gaining an entrance into any of the orchards 
of Colorado. It will feed upon almost any of the deciduous 
trees and shrubs and consequently is very hard to extermi- 
nate in any locality where it has once gained an entrance. 
The scales are very inconspicuous so that trees are lia- 
ble to be killed by the insects before the owner becomes 
aware of the presence of the scale. 
The female scales are circular in shape and dark gray 
in color with a small red or rust-colored spot at the center 
and measure from one-sixteenth to one-twelfth of an inch 
across. The male scales are black in color and are smaller 
than those of the female. They occur upon trunk, limbs, 
leaves or fruit, and usually cause a reddish coloration of the 
tissue immediately about the scales, which is very charac- 
teristic of this species. 
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