284 FRUIT INSECTS 



plied three times : in late March or early April, about the middle 

 of July and in late September or October. 



Reference 

 U. S. Bur. Ent. Bull. 68, Pt. IX. 1909. 



The Peach Twig-borer 



Anarsia lineatella Zeller 



This European peach pest is now generally distributed 

 throughout the United States and Canada wherever its host 



plant is cultivated. 

 It is sometimes 

 troublesome in the 

 Eastern states and 

 has become a serious 

 ^ pest on the Pacific 



Fig. 246. — Moth of the peach twig-borer (x 5). Coast where it is 



estimated that its attacks cause a loss of about one fourth 

 of the peach crop in certain regions. The over-wintering 

 larvae burrow into the tender shoots in early spring, cause 

 them to die and give the tree the appearance of having 

 been scorched by fire ; the summer generations likewise burrow 

 in the new growth but also attack the fruit, particularly of 

 late varieties. 



The insect hil)ernates as a small larva, about yV ii^ch in 

 length, in a silk-lined cavity just beneath the outer bark, usually 

 in the crotch at the base of the new growth. The location of 

 the hibernating cavities is indicated by the small, reddish-brown 

 mounds of bits of bark webbed together with silk thrown out 

 of the cavity. In early spring the larva enlarges the cavity 

 by feeding on the surrounding tissues and reaches the surface 

 in 10 to 14 days. The larvae then attack the young growth, bur- 



