GRAPE INSECTS 



437 



Fig. .377. 

 berry moth, 

 berries. 



- Cluster of green Concord grapes badly infested by the grape- 

 Note the discoloration and the cracking open of the infested 



References 



Cornell Agr. Exp. Sta. Bull. 223. 1904. 

 Ohio Agr. Exp. Sta. Circ. 63. 1906. 



The Grape-blossom Midge 

 Contarinia johnsoni Slingerlaiid 



This grape pest was first discovered in the Chautauqua grape 

 region of western New York in 1904, and as far as kno^^^l is 

 stili confined to that locality. A closely related species causes 



