CHAPTER XXIII 
Insect PEsts oF ORCHARD AND SMALL FRUITS 
The Grape Root-worm (Fidia viticida Walsh) 
EvipENcE of the presence of this insect is twofold. Above ground 
Fic. 278.— Roots of grape in- 
jured by the Grape Root-worm. 
Original. 
the parent beetle eats characteristic, 
chainlike holes in the leaves. Be 
neath ground the grubs which hatch 
from eggs laid by the beetles gnaw 
channels and holes in the larger roots 
and entirely destroy the smaller roots 
and root hairs. The serious injury 
is that done by the grubs. 
The adult beetle is one fourth inch 
long, robust, grayish, and covered 
with very short hairs. It emerges in 
Fic. 279.— Adult of the Grape Root- 
worm. Enlarged and natural size. 
Original. 
