INJURIOUS INSECTS. 



347 



protection to the 60 or 70 wee white eggs (1, Fig. 29) which 

 are found underneath. About the first of June the young lice 

 (2, Fig. 29) appear, so small that, though clad in yellow, they 



can hardly be seen without a 

 glass. Coming forth from under 

 the scale, they roam about for a 

 F:O. js. few days, are sometimes blown 



to other trees, thus spreading their evil work, but very soon 

 settle down to earnest business. This consists in inserting their 

 tiny beak and sucking the vitality from the trees. Very soon a 

 scale (3, 4, 5, and 6, Fig. 29, different stages of development of 

 scale) commences to form around them, from an exudation which 

 is a secretion from the general surface. By August the imper- 

 vious scale is complete (7, Fig. 29). The eggs are then soon 

 deposited, and the parent louse dries up and shrinks away to 

 nothingness. 



REMEDIES. 

 As the scale is 

 impervious to 

 most fluids, 

 though oils will 

 penetrate it and 

 destroy the 

 eggs, the best 



time to fight these insects is just after the eggs hatch. Hence, 

 the same remedy recommended for the borers just described will 

 prove effective here. The time of application is the same. Here 

 then, three "birds are killed with one stone." 



Twig Borers. There are two species of beetles which 

 bore into the twigs of the apple tree and cause them to wither, 

 one as a larva, the other when mature. Space will only permit 

 me to state that to fight these we have but to cut off and burn 

 the blighted twigs. 



Canker "Worm. Anisopteryx vcmafa, Peck. Family Pha- 

 Icenidce. Order, Lcpidoptera. This insect is widely prevalent 

 in the United States, and once in an orchard, must be destroyed 

 or the orchard will be. 



