27 



manv species of weeds. By a close inspection of the plants about 

 the beginning of July, the spot where the borer entered, which is 

 generally quite a distance from the ground, may be detected, and the 

 caterpillar cut out without injury to the plant. This plan is imprac- 

 ticable for an extensive crop, but by destroying the borers found in 

 the vines that wilt suddenly, one can lessen the number another year. 



THE PYRAMIDAL GRAPE-VINE CATERPILLAR. 



iropMla pyramidoides (Guen.). 



Fig. 21. 



This caterpillar, Fig. 21, is generally found on grape vines early in 

 June, but also feeds on apple, plum, raspberry, maple, poplar, etc. 

 It is about an inch and a half in length, with the body tapering towards 

 the head ; of a whitish green color, darker on the sides ; with a longi- 

 tudinal white stripe on the back, broader on the last segments. Low 

 down on each side is a bright yellow stripe, between this and the one 

 on the back is another less distinct, and the under surface of the body 

 is pale green. 



The caterpillar is fully grown about the middle or the last of June, 

 when it descends to the ground, draws together some of the fallen 

 leaves, and makes a cocoon in which it soon changes to a mahogany- 

 brown pupa. 



Fig. 22. 

 In the latter part of July the perfect moth, Fig. 22, emerges, meas- 

 uring, when its wings are expanded, about one and three-fourths 

 inches ; the fore wings are dark brown shaded with lighter, with dots 

 and wavy lines of dull white. The hind wings are reddish, or of a 

 bright copper color, shading to brown on the outer angle of the front 



