THE GRAPE-BEERY MOTH. 



25 



PL IV, fig. 4), and the latter emerges as an adult moth (PL IV, 

 fig. 1). These moths of the first brood deposit their eggs on the 

 now nearly full-grown berries (see fig. 7). These second-brood eggs 

 are usually more numerous than those of the first brood, if the 

 infestation is at all serious. They are deposited upon the surface 

 of the fruit and are quite conspicuous as white scale-like spots (see 

 fig. 7). When the infestation is very heavy nearly all of the berries 







:f. 











A 



- 



w 





' > ; 



Mk , 1 



rtf^BSlfflj 





Fig. 7.— Cluster of Concord grapes on which many second-brood 

 eggs of the grape-berry moth are present. The white spots indi- 

 cate the appearance and position of the eggs. Eggs with black 

 centers were parasitized. (Original.) 



in the cluster may be attacked and the fruit rendered worthless. 

 The larva feeds upon the pulp of the fruit and sometimes attacks 

 the seeds before these commence to harden. By the time the grape 

 crop is ready to harvest it is not unusual to find large numbers of 

 clusters injured to the extent shown in Plate VI, figure 1. In Plate 

 VI, figure 2, full-grown larvae of the second brood are shown in the 

 act of leaving the fruit for hibernation. 

 60141°— Bull. 116, pt 2—12 3 



. 



