INSECTS ATTACKING THE PEAR, AND THEIR CONTROL 1031 



by slaking eighty pounds of quicklime for each one hundred 

 gallons of wash. This should be strained through fine brass 

 screening before applying. 



The Plum Curculio 



The curculio, C ' onotrachelus nenuphar Herbst., causes deformed 

 and knotty pears. It also produces holes in the maturing fruit 

 that are often confused with the work of the codling moth. The 



FIG. 312. THE PLUM CURCULIO: YOUNG PEARS SHOWING FEEDING 

 AND OVIPOSITION PUNCTURES 



adult is a small gray beetle that passes the winter under the bark 

 of trees or under rubbish. This insect appears early in spring 

 and deposits its eggs in young fruits. The egg is inserted under 

 the skin, after which a crescent-shaped cut is made around one 

 side of the puncture. Egg laying continues for about two months. 

 Treatment. The plum curculio is rarely injurious to commer- 

 cial plantings of pears in New York except where the orchard is 

 adjacent to woods, brush land, or other favorable hibernating 



