102 INSECTS INJURIOUS TO THE APPLE. 



changes to a brown chrysalis. In this inacti\ 7 e condition the 

 insect remains for three or four weeks, sometimes longer, when 

 the moth appears. 



The moth (Fig. 98) is a very pretty object. Its fore wings 



are ash-gray, whitish towards the outer margin, and crossed 



8 by three irregular black lines, which 



are ft" nt or indistinct towards the 



HHREjBr inner edge; near the middle of the 



^JaiHIBfBreiy wing there is often a round, whitish 

 spot, with a black dot in the middle. 



The hind wings are dull-whitish, dusky towards the tips. 

 Beneath, both wings are of a silvery-whitish hue, sprinkled 

 with blackish dots towards the outer edges. When the 

 wings are expanded, they measure from three-quarters of an 

 inch to an inch or more across. . 



The first moths appear early in spring, and attach their 

 eggs to the young foliage ; the second brood appear in July. 

 These attach their eggs to the leaves, and produce larvaa 

 in August and September, which, when their growth is com- 

 pleted, change to chrysalids within the folded leaves, as 

 already described, and are carried to the ground with the 

 fall of the leaves in autumn, where they pass the winter in 

 the pupa state and produce moths in the following spring. 



These larvae feed also on cherry, peach, elm, poplar, and 

 other trees. They are seldom sufficiently numerous to be 

 troublesome, but if at any time a remedy is required they 

 may be destroyed by syringing the leaves with Paris-green 

 or hellebore mixed with water, as recommended for No. 35. 

 When the trees on which they are feeding are suddenly 

 jarred, the caterpillars will drop to the ground, and by tak- 

 ing advantage of this peculiarity they may be captured and 

 destroyed. 



No, 44. The Palmer-worm. 



Ypsolophus pometellus (Harris). 



This larva appears on apple-trees during the latter part of 

 June, and at times is excessively numerous and destructive, 



