EeportXof Entomologists of Expeeiment Station. 553 



partis of the tree, feeding voraciously on the under sides of the 

 leaves, and, as above noted, frequently upon the young apples as 

 well. This brood completes its transformation about the first of 

 August, and the second brood before the cold winter weather sets in. 



When the caterpillars are established in an orchard, jarring the 

 trees is recommended. Mr. C. K. Scoon, of Geneva, N. Y., who 

 found them abundant in his plum-orchard last year, kept them in 

 check by frequently jarring the trees by a succession of light taps. 

 The caterpjUars at lirst hang suspended by a silk thread, but the 

 repeated jars cause them to fall to the ground ; or, better yet, a 

 curculio cart may be placed in position in which they could be easily 

 captured and killed. In case the curculio carts are not to be bad, 

 any large sheet spread on the ground under the tree will answer the 

 purpose. 



During the winter, a very careful search should be made for the 

 egg masses, which, as above noted, will be found attached to the 

 empty cocoons which were formerly inhabited by the females. The 

 eggs may be destroyed by crushing. 



Spraying with arsenites is also recommended, although the grower 

 referred to as losing a considerable portion of his apple crop says 

 that he sprayed his orchard three times with Paris green, but 

 apparently to no effect. This failure may have been due to a lack 

 of lime in the mixture, as an excess of lime has a tendency to make 

 the poison remain on the leaves. The spraying should be done 

 very thoroughly, care being taken to drench the under surface of 

 every leaf. The caterpillars are said to be more susceptible to the 

 poison when young. 



According to Dr. Lintner, this insect is widely distributed in the 

 United States, being found both north and south as far west as the 

 Rocky Mountains. It has a large variety of food-plants, but, accord- 

 ing to Mr. Saunders, prefers the apple. It is known to frequently 

 occur on the pluml), and has been found upon the pear. Professor 

 Beach, of the New York Agricultural Experiment Station, tells me 

 that he has found it upon the apricot. In some sections of the State 

 it is very destructive to shade-trees, particularly the elm and maple. 



Fig. 2 represents a caterpillar feeding upon the under surface of 

 an apple-leaf. An injured fruit is represented on the left. The 

 drawing for the illustration was made by Mr. Wm. P. Wheeler of 

 the New York Agricultural Experiment Station [Garden and 

 Forest, August 7, 1895]. 



