1098 THE FRUIT INDUSTRY ix XEW YORK STATE 



The latter species especially is often confused with the peach-tree 

 borer as will be noted in the following descriptions : 



The Peach Tivig-borer. While this borer (Anarsia Lineatella 

 Zell.) can generally be found in the orchards of western Xew 

 York, it has not become a serious pest. In California, Oregon, and 

 Washington, it is credited with severe damage. In Xew York 

 it inhabits poorly sprayed or unsprayed trees, being infrequent 

 in orchards that are thoroughly treated with lime-sulphur solution 

 when dormant. The principal w r ork of this species is feeding 

 early in spring on the new shoots. In California * and other 

 western states, the larva feeds in the fruit also, causing wormy 

 peaches. In Xew York, however, the writer has never noted the 

 species in the fruit, but its work on the young shoots is common. 



The small larva of the twig-borer lives over winter in the thick 

 tissues of the crotches of the limbs. In spring, at about the time 

 the buds swell and burst, the larvae come forth and feed in the 

 pithy centers of the young shoots, causing them to wither and die. 

 The larvae soon become full-grown, pupate, and later come forth 

 as moths. 



Control. In Xew York conditions do not warrant special pre- 

 cautions against this insect. As stated above the usual spring 

 application of lime-sulphur wash appears to control infestations. 

 The work of the larva in the crotches of the trees is limited and 

 has never been noted to cause oozing of the sap. 



The Lesser Peach Borer. This borer (Synanthedon pictipes 

 G. & R.) is easily confused with the large peach borer that makes 

 its entrance around the crown of the trees. The lesser peach borer 

 is found throughout the eastern United States and is particularly 

 abundant in western Xew York and the lake portions of Canada. 

 It generally inhabits the trunks and large gummy wounds on the 

 main limbs and frequently is found in injuries caused by the 

 large peach borer. 



When mature, the larva, or borer, is about three-quarters of 

 an inch in length and is not as large in diameter as is the peach 

 borer. It feeds on the inner bark, making large channels and tend- 

 ing to enlarge the wounds by eating around the edges. In Xew 

 York the larvae become full-grown in early July. They crawl out 



* Reprint Yearbook U. S. Dept. of Agr., 1905. 



