SAWFLY LARV.E EATING THE LEAVES 287 
The Raspberry Sawfly (\Jonophadnoides rubi Harr.) 
Greenish, spiny worms eat the foliage of raspberry and blackberry, 
stripping the bushes and leaving only the main leaf veins. The full- 
grown larva is three fourths of an inch long and covered with short 
Fig. 421.— Larva of the Raspberry Fic. 422.—The Raspberry Sawfly. 
Sawfly. Original. Enlarged and natural size. Orig- 
inal. 
spines, which are dark on its back but light on its sides. When ma- 
ture, the worms enter the ground, and remain there until the follow- 
ing spring, when the transformation to the adult sawfly takes place. 
Paris green or ar- 
senate of lead may be 
used to poison the 
worms until the fruit 
is set. After that use 
hellebore. 
The Grape Sawfly 
(Selandria vitis Say) 
Greenish or yellowish 
slugs, their bodies 
dotted with black, feed 
in groups on the leaves 
of grapes, usually on 
the under side of the leaf. The adult is a sawfly. There are two 
broods annually. 
Fig. 423.— The Grape Sawfly. Enlarged and 
natural size. Original. 
