102 INSECTS INJURIOUS TO THE APPLE. 



changes to a brown chrysalis. In this inactive 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 

 ^ Q^ by three irregular black lines, which 



are faint or indistinct towards the 

 inner edge ; near the middle of the 

 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 larvae 

 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 larvae will drop to the ground, and by takin^i 



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. 



