COLEOPTERA. 
579 
and later gnawing holes into the leaves (Figs. 705 and 
706). In May and June the 
brown, sluggish larvae may 
also be found feeding upon 
the upper surface of the 
leaves. The full-grown larva 
is chestnut-brown, marked 
with black spots. The beetles 
can be destroyed in early 
spring by jarring them from 
the vines onto a sheet wet 
with kerosene ; use for this 
purpose a piece of sheeting 
several yards long, with a 
stick fastened to each end so that it 
can be easily moved from vine to 
vine. 
The Wedge-shaped Leaf-beetles .— 
These insects are characterized by the 
peculiar form of the body, which is 
narrow in front and broad behind. In 
f 
Fig. 705. 
Fig. 706. 
most of the species the body is much roughened by deep pits; 
and usually the pits on the wing covers are in regular rows. 
These insects and the tortoise-beetles differ from other leaf- 
beetles in having the fore part of the head prominent, so that 
the mouth is confined to the under surface. Some of the larvae 
