168 INSECT PESTS OF BERRIES AND GRAPES 



Attacking the Fruit. 



The Grape Curculio (Craponius incequalis Say). This beetle 

 (Fig. 184) is black in color, sprinkled with grayish spots, and is 

 one-tenth of an inch long. It hibernates in the adult stage, and 

 eggs are laid on the young grapes in early summer. 



Injury. The larva or grub, upon hatching, enters the fruit 

 and feeds within. Its presence causes a discolora- 

 tion of one side of the berry as of premature ripen- 

 ing. The berry remains plump, but sometimes 

 drops before becoming ripe. The grub, becoming 

 full grown before the crop ripens, leaves the berry, 

 drops to the ground, and buries itself a short 

 distance below the surface. It changes to a pupa, 

 FIG. 184. The from which the beetle escapes some time in Sep- 



grape curculio. 



Control Measures. Jar the vines occasionally in June, placing 

 a sheet on the ground beneath to catch the weevils, which can then 

 be destroyed. 



The Grape-berry Moth. This insect is a serious pest in vine- 

 yards, and the injury it causes resembles that of the grape curculio. 



FIG. 185. The grape-berry moth: a, b, larva; c, pupa; d, case with empty pupal skins; 

 all enlarged; /, grapes with worm, natural size, hair lines indicate size of a, b, c, and d. 

 (U. S. Bu. Ent.) 



The pest when a moth (Polychrosis viteana Clem.) has fore-wings 

 of a pale, dull bluish shade, and hind-wings dull brown. 



Injury. The caterpillar enters the grape early in July, produces 

 a discolored spot; and spores entering the grape at the puncture 



