96 THE CHERRIES OF NEW YORK 



which lays its eggs within the tissue of the leaves. Despite the fact that 

 it is easily destroyed by any of the arsenical sprays or by dusting with 

 lime this slug everywhere does much damage to cherries. 



Wild cherries suffer severely from the tent caterpillar' {Malacosoma 

 americana Fabricius) and occasionally cultivated trees are attacked. The 

 arsenical sprays are fatal to the pest. The spring canker-worm^ {Palea- 

 crita vernata Peck) and the fall canker-worm^ {Alsophila pometaria Harris), 

 the white-marked tussock moth (Hemerocampa leiicostigma Smith and 

 Abbot), the rusty tussock moth {Hemerocampa antiqua Linnaeus), and 

 the definite-marked tussock moth {Hemerocampa definita Packard) are all 

 occasional cherry pests and all succvunb to poisonous sprays. The two 

 now notorious European pests recently introduced into America, gypsy 

 moth {Porthetria dispar Linnaeus) and the browntail moth {Euproctis 

 chrysorrhcea Linnaeus) , attack cherry trees in common with other deciduous 

 trees and may often do considerable damage. Sometimes, but not often, 

 the buds of the cherry are attacked by the bud-moth {Spilonota { Tmetocera) 

 ocellana Schiffermiiller) , the caterpillars of which bind the young leaves 

 together as they expand so that small, dead, brown clusters of foliage 

 are to be seen here and there where the pests are at work. Spraying with 

 arsenicals is effective if done just as the buds begin to open. 



In sandy soils the cherry is sometimes attacked by hordes of the 

 common rose-chafer {Macrodactylus subspinosus Fabricius), leaves, flowers 

 and even the fruit sioffering from the pest. It is a difficult insect to con- 

 trol but a spray of arsenate of lead with molasses is fairly effective. It is 

 important to know that the insect does not often breed in ground kept 

 in clean cultivation. 



' Lowe, V. H. The Apple-tree Tent Caterpillar, N. Y. Sta. Bui. 152:279-293. 1898. 

 'Riley, C. v. An. Rpt. State Etitom. Mo. 2:g^-iOi. 1870. 

 'Ibid. 7:83-90. 1875. 



