ORCHARD INSECTS 



301 



which the adult beetles emerge in three or four weeks, or 

 during late summer and early fall. 



Injured peaches and plums usually drop to the ground, 

 but cherries stick to the 

 tree and are small and 

 gnarled or eaten out by 

 the larvae. In apples the 

 larvae seem to develop 

 only in those which fall 

 to the ground, the rapid 

 growth of the apples on 

 the tree probably crush- 

 ing the eggs. The egg- 

 scars and feeding-punc- 

 tures make the apples 

 gnarly, summer varieties 

 sometimes being ren - 

 dered worthless, and even 

 winter sorts are much 

 blemished by the scars. 

 Injury to peaches and 

 apples by the feeding- 

 punctures of the newly 

 emerged beetles is often 

 fully as serious. 



Clean cultivation 

 during the summer will FIG. 216. (After Chittenden, U. S. 

 destroy many of the Dept. Agr.) 



1, young plums showing crescent-shaped egg 



DUD2B in the SOU. On punctures of the plum curculio; 2, adult curculio 



on young peach four times natural size. 



plums and cherries the 



beetles may be collected in early morning by spreading a 

 sheet (often mounted on a frame) beneath a tree and giving 

 the tree a quick jar, whereupon the beetles will feign death 



