BORING 
of the larva. The adults are 
clear-winged moths, are on 
the wing in late summer, 
and lay eggs on the leaves, 
whence the larve make their 
way to the base of the plant. 
Removal and destruction 
of infested canes and roots 
each spring is the only 
remedy. 
IN THE TRUNK 235 
Fic, 302.— Adult of the Raspberry Root- 
borer. Slightly enlarged. Original. 
The Round-headed Apple-tree Borer (Saperda candida Fab.) 
Apple trees, especially newly set stock, are subject to severe injury 
by a grub that bores in both sapwood and heartwood toward the base 
Fic. 303. — Work and larva of the Round-headed Apple-tree Borer. Original. 
of the trunk. Its work may be recognized by discolorations of the 
bark and the presence of castings pushed out of its burrows. The 
full-grown grub is an inch long, yellowish white, with a small, 
dark head, and a slightly enlarged, brown first segment. 
The parent is a handsome striped beetle. Eggs are laid on the bark, 
