INSECTS INFESTING THE GRAPE. 



193 



Yis. 178. 



Fig. 178. — Grape- 

 vine Flea-beetle and 

 LarvjB; a, several lar- 

 vae on a leaf; 6, a lar- 

 va enlarged — colors, 

 brown and black ; c, 

 the cocoon ; (i, the 

 beetle enlarged — col- 

 or, steel-blue. 



These beetles have 

 the hind thighs 

 greatly enlarged, 

 which enables them 

 to leap to a consid- 

 erable distance, like 

 a flea ; it is from this 

 peculiarity that they 

 take the name of 

 " flea-beetles." They spend the Winter in some sheltered situa- 

 tion, and come forth early in the following Spring and feed upon 

 the buds of grapevines, usually hollowing them out. As soon 

 as the leaves are expanded the females deposit their eggs upon 

 them ; in a few days the young are hatched, and immediately 

 begin to feed upon the leaves. When fully grown (Fig. 1786) 

 they descend to the ground, which they enter, and form small 

 cells (Fig. 178c) in which to pass the pupa state. These 

 insects are very destructive to grapevines, and every effort 

 should be made to exterminate them. 



Remedies. — Xo. 19, 20, 21 or 102. On young non-bearing 

 grapevines, etc., use No. 103, or No. 10 may be used instead. 



