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Guide to the study of insects; and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists

Guide to the study of insects; and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists in Vernon, BC

By None

Current price: $32.36
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Guide to the study of insects; and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists

Coles

Guide to the study of insects; and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists in Vernon, BC

By None

Current price: $32.36
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Size: Paperback

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1872 Excerpt: ...ocellated patch on the inner angle, which line is edged with a coppery tint. The moth lays its eggs on apple and pear trees early in summer in the blossomend of the fruit, and the larva hatches in a few days, burrowing into the core. It matures in three weeks, when the apple drops to the ground and the larva transforms in a thin cocoon in crevices in bark, etc., and in a few days another brood of moths appear, though most of them remain in their cocoons through the winter as lame, where we have found them under the loosened bark early in May. This formidable pest may be partially destroyed by gathering "wind-falls," though the larva often deserts the worm-eaten apple before it falls. The best remedy is that suggested by Dr. Trimble, who binds bands of hay about the trees from July until the middle of September. The larvae crawl under these bands and there spin their silken cocoons, when every few da''s the bands can be removed and the worms destroyed. Tixeidje Leach. The Tineids are a family of great extent, and the species are very destructive to vegetation, having innumerable modes of attack. They may be distinguished from the Tortricidw by their smaller size, while the narrow wings which lie on the top of, or are rolled around the body when at rest, are often falcate, or pointed acutely, and edged with a long fringe of exceeding delicacy. The maxillary palpi are greatly developed, while the labial palpi are of the usual size, and usually recurved in front of the head. The antenna? are long and filiform. The larva; are cylindrical, variously wrinkled transversely, and with from fourteen to sixteen feet. They often construct cases in which they live, and usually spin a slight silken cocoon. About 1,200 species are already known in Europe alone. Th...
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1872 Excerpt: ...ocellated patch on the inner angle, which line is edged with a coppery tint. The moth lays its eggs on apple and pear trees early in summer in the blossomend of the fruit, and the larva hatches in a few days, burrowing into the core. It matures in three weeks, when the apple drops to the ground and the larva transforms in a thin cocoon in crevices in bark, etc., and in a few days another brood of moths appear, though most of them remain in their cocoons through the winter as lame, where we have found them under the loosened bark early in May. This formidable pest may be partially destroyed by gathering "wind-falls," though the larva often deserts the worm-eaten apple before it falls. The best remedy is that suggested by Dr. Trimble, who binds bands of hay about the trees from July until the middle of September. The larvae crawl under these bands and there spin their silken cocoons, when every few da''s the bands can be removed and the worms destroyed. Tixeidje Leach. The Tineids are a family of great extent, and the species are very destructive to vegetation, having innumerable modes of attack. They may be distinguished from the Tortricidw by their smaller size, while the narrow wings which lie on the top of, or are rolled around the body when at rest, are often falcate, or pointed acutely, and edged with a long fringe of exceeding delicacy. The maxillary palpi are greatly developed, while the labial palpi are of the usual size, and usually recurved in front of the head. The antenna? are long and filiform. The larva; are cylindrical, variously wrinkled transversely, and with from fourteen to sixteen feet. They often construct cases in which they live, and usually spin a slight silken cocoon. About 1,200 species are already known in Europe alone. Th...

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