. A manual for the study of insects. Insects. COLEOPTERA. 573 Borer, Saperda Candida (Sa-perMa can'di-da).—Excepting the odlin-moth, which infests the fruit, this is the worst enemy of the apple that we have. Its common name is used to dis- tinguish it from the Flat-headed Apple-tree Borer, already described, the larva of this species being nearly cylindrical in form (Fig. 690). The eggs are laid on the bark at the Dase of the tree late in June or July. The larva at first bores in the soft sap-wood, making a disk-shaped mine ; after this it works in an upward direction in the harder wood, and
. A manual for the study of insects. Insects. COLEOPTERA. 573 Borer, Saperda Candida (Sa-perMa can'di-da).—Excepting the odlin-moth, which infests the fruit, this is the worst enemy of the apple that we have. Its common name is used to dis- tinguish it from the Flat-headed Apple-tree Borer, already described, the larva of this species being nearly cylindrical in form (Fig. 690). The eggs are laid on the bark at the Dase of the tree late in June or July. The larva at first bores in the soft sap-wood, making a disk-shaped mine ; after this it works in an upward direction in the harder wood, and at the close of its larval existence comes to the surface several inches above the place it entered. It requires nearly three years for this larva to attain its growth ; it changes to a pupa, near the upper end of its burrow, about the middle of May, and emerges as a beetle in June. The beetle (Fig. 697) is of a pale-brown color above, with two. Fig. 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
