BULLETIN 195. 



eaten away. This 

 gives the leaf a 

 lace-like effect, the 

 parts left in cases 

 of bad injury be- 

 ing held together 

 by mere threads. 



The beetle also 

 gouges out strips 

 of the bark of the 

 tender shoots in 

 the same manner 

 as it works on the 

 leaves (Fig. 11). 

 Sometimes the 

 shoot is thus 

 gouged out all the 

 way around and 

 turns brown in 

 color. This loss of 

 bark or covering 

 interferes consid- 

 erably with the 

 conveyance of 

 nourishment to the 

 fruit and growing 

 tip. The petioles 

 of the leaf are 

 similarly attacked, 

 as are also the 

 pedicels of the 

 berry ; and the 

 pedicels being of a 

 small size, a few 

 gougings around 

 them will cause the 

 berry to dry up. 



The berry itself 

 does not escape the 

 attacks of this 

 beetle, and in July 

 berries may be seen 

 that are cracked 



CALIFORNIA GRAPE ROOT- WORM. 



17 



t 



ft f 

 t t t 



FIG. 13. The work of the beetle on the berries. 



FIG. 14. A vine stunted in growth through injury to the roots by 

 the California grape root-worm. Photographed June 6, 1907. 



