Bui. 901, U. S. Dept. of Agriculture. 



Plate III. 



Work of Grapevine Flea-Beetles. 



4, Feeding marks of adult beetle of Alt ica chali/bea on leaf of Concord grape. B, Larvae and 

 feeding marks of Attica chalybea on upper surface of grape leaf (thick-leaved variety) C Feed- 

 ing marks of adult beetle of A Itica chalybea on grape leaf (thick-leaved variety) 



