CHAPTER XXIII 



Insect Pests of Orchard and Small Fruits 



The Grape Root-worm {Fidia viticida Walsh) 



Evidence of the presence of tliis insect is twofold. Above ground 



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 



Fig. 278. — Roots of grape in- 

 jured by the Grape Root-worm. 

 Original. 



Fig. 279. — Adult of the Grape Root- 

 worm. Enlarged and natural size. 

 Original. 



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