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SMALL CATERPILLARS INJURING THE LEAVES 
Fic. 402.— Cocoon of the Apple-leaf Bucculatrix. Enlarged and natural size. 
Original. 
In the fall the larve migrate to twigs or branches and make 
small, whitish, ribbed cocoons, often somewhat conspicuous when 
occurring in large numbers. 
The tiny parent moth emerges 
from the cocoon the following 
spring. 
The use of Paris green or arse- 
nate of lead to poison the cater- 
pillars when they begin feeding 
on the surface of the leaf is the 
easiest remedy, although a win- 
ter spraying with lime sulphur 
or 15 per cent kerosene emulsion 
will be likely to kill the overwin- 
Fie. 403.— Adult of the Apple-leaf 
tering form. The species is Bucculatrix. Enlarged and natural 
seldom a genuine pest. size. Original. 
The Spring Canker-worm (Paleacrita vernata Peck) 
A small, naked measuring worm or inchworm attacks the foliage of 
apple trees in early spring. At first small holes are eaten in the leaves, 
