. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. Pig. 220.—The fruit tree bark beetle (Eccoptogaster rugulosus): a, adult or beetle; b, same in profile; c, pupa; d, larva. All enlarged about 10 times. (Chittenden.) Eggs.—Deposited in little pockets in the brood gallery or chamber between the bark and sap wood; hatch in 3 to 4 days (Fig. 221). Larva.—Matures in 4 to 5 weeks. A minute legless grub }{q inch long; whitish; head small, larger in front than behind. Larval
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. Pig. 220.—The fruit tree bark beetle (Eccoptogaster rugulosus): a, adult or beetle; b, same in profile; c, pupa; d, larva. All enlarged about 10 times. (Chittenden.) Eggs.—Deposited in little pockets in the brood gallery or chamber between the bark and sap wood; hatch in 3 to 4 days (Fig. 221). Larva.—Matures in 4 to 5 weeks. A minute legless grub }{q inch long; whitish; head small, larger in front than behind. Larval burrows 3 or 4 inches long, filled with reddish dust-like fras and at first at right angles to brood chamber. Pupa.—Pupa formed in a slightly enlarged chamber; duration 7 to 10 days. Adults make their way out through little round holes in the bark. Life-history.—Cycle in about i]-^ months; two generations in a season in the North and more in the South. Second brood larvae winter in the trees. Said to attack preferably unhealthy trees. Parasitized by Chiropachys colon Westw., a chalcid. Control.—Remove and destroy dead or dying trees before May or June; apply a protective wash of whitewash and carbolic acid in June and 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 Lochhead, William, 1864-. Philadelphia, Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
