. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 302. —Adult of the Raspberry Root- borer. Slightly enlarged. Original. The Round-headed Apple-tree Borer {Saperda Candida Fab.) Apple trees, especially newlj- set stock, arc subject to severe injury by a grub that bores in both sapwood and heartwood toward the base. Fig. 303. — Work and larva of the Round-headed Apple-tree Borer. Original. of the trunk. Its work may be recognized bj' discolorations of the bark and the presence of castings pushed out of its burrows. The full-grown grub is an inch long, ye

. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 302. —Adult of the Raspberry Root- borer. Slightly enlarged. Original. The Round-headed Apple-tree Borer {Saperda Candida Fab.) Apple trees, especially newlj- set stock, arc subject to severe injury by a grub that bores in both sapwood and heartwood toward the base. Fig. 303. — Work and larva of the Round-headed Apple-tree Borer. Original. of the trunk. Its work may be recognized bj' discolorations of the bark and the presence of castings pushed out of its burrows. The full-grown grub is an inch long, ye Stock Photo
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. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 302. —Adult of the Raspberry Root- borer. Slightly enlarged. Original. The Round-headed Apple-tree Borer {Saperda Candida Fab.) Apple trees, especially newlj- set stock, arc subject to severe injury by a grub that bores in both sapwood and heartwood toward the base. Fig. 303. — Work and larva of the Round-headed Apple-tree Borer. Original. of the trunk. Its work may be recognized bj' discolorations of the bark and the presence of castings pushed out of its burrows. The full-grown grub is an inch long, yellowish wliite, with a smaU, dark head, and a slightly enlarged, bro'uii first segment. The parent is a handsome striped beetle. Eggs are laid on the bark.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company