INSECTS AFFECTING THE PEACH. 



INJURING THE ROOT. 



The Peach-tree Borer. 



Sannina exitiosa. 

 The Peach-tree Borer is a soft, whitish caterpillar, 

 with a reddish-brown head, and sixteen legs. It 

 hatches from eggs laid during the summer months 

 by a handsome, day-flying moth, upon the bark of 

 the trunk, at or near the soil surface. After hatching, 

 the young larvae burrow through to the inner bark 

 and sapwood of the larger roots, upon which they 

 feed, causing a gummy exudation that betrays their 

 presence. They continue feeding in this way for 

 nearly a year, being interrupted of course during the 

 winter months, when they become full grown as larvae. 

 They then usually approach the top of the ground 

 within an inch or two of the soil surface, and con- 

 struct cocoons of the gummy exudation, their castings 

 and silk. Within these cocoons they change to the 

 pupa state, and three or four weeks later again 

 change to moths. The two sexes of the moths are 

 represented twice natural size at Plate II — Fig. 1 

 representing the male, and Fig. 2 the female. These 

 moths are present more or less all summer : although 

 there is but one generation a year, the larva? reach 

 maturity at such different times that they keep up a 



