INSECTS INJURIOUS TO THE GRAPE 



441 



feeds upon the moths and may be a factor in the control of the 

 pest 



The Grape Root-worm * 



The Grape Root-worm is the larva of a small, hairy, chestnut- 

 brown beetle which feeds on the upper surfaces of the leaves 



FIG. 370. The life cycle of the grape root-worm enlarged and natural size. 

 (After Slingerland.) 



eating out series of patches or holes in characteristic chain-like 

 feeding marks which afford an easily recognizable indication of the 



* Fidia viticida Walsh. Family Chrysomdidce. See Quaintance, I.e.; 

 Hartzell, I.e., and Bulletin 453, N. Y. Agr. Exp. Sta.; M. V. Slingerland, 

 Bulletins 184, 208, 224, and 235, Cornell Univ. Agr. Exp. Sta.: E. P. Felt, 

 Bulletin 19, Office State Ent. of N. Y.; Fred Johnson, Bulletin 68, Part VI, 

 Bureau Entomology, U. S. Dept. Agr.; Johnson and Hammar, Bulletin 89, 

 ibid. 



