GRAPEVINE ROOT WORM 81 



EXPLANATION OF PliATES 



Plate li 



Fig. 



1 Beetle, much enlarged 



2 Leaf badlj riddled by the beetle 



3 Eggs on last year's wood, the loose bark has been lifted so 



as to expose them. 



4 Larva or grub, much enlarged 



5 Work of larva or grub on larger roots 



6 Pupa or " turtle stage " in cell 



7 Same much enlarged 



Plate 2 



Vineyard badly injured by the grapevine root worm. Observe 

 that very few of the vines extend to the top wire. The wires 

 and posts would ordinarily be concealed in a thrifty vineyard. 



Plate 3 



Vineyard more seriously infested than the preceding. A por- 

 tion of this was uprooted last spring, and the area shown was 

 kept simply for experimental purposes. 



Plate 4 



Portion of two vines represented on the preceding plate and 

 showing how badly the beetles may eat the foliage when 

 abundant. 



Plate 5 



Leaves from badly eaten vine, illustrating the peculiar, chain- 

 like eaten areas. 



Plate 6 



Beetle catcher devised by Messrs Hough and Barden. 



1 Executed from nature under the author's direction by L. H. Joutel. 



