. Economic entomology for the farmer and fruit-grower. Beneficial insects. Fig. Canker-worm, larva of Anisoptcryxpometaria. —a, i5, egg, enlarged ; e, patch of eggs ; c, d, body segments of /", larva ; g-, pupa of female. a, larva of Paleacrita vernata; b, an ^zZy niuch enlarged ; c, d, body segments of larva. trunk below any obstruction that it cannot pass. The young larvae will attempt to get to the leaves, and will, if they find an impassable barrier, starve to death. The best materials, all things considered, are " raupenleim," or " dendrolene," prefer- ably
. Economic entomology for the farmer and fruit-grower. Beneficial insects. Fig. Canker-worm, larva of Anisoptcryxpometaria. —a, i5, egg, enlarged ; e, patch of eggs ; c, d, body segments of /", larva ; g-, pupa of female. a, larva of Paleacrita vernata; b, an ^zZy niuch enlarged ; c, d, body segments of larva. trunk below any obstruction that it cannot pass. The young larvae will attempt to get to the leaves, and will, if they find an impassable barrier, starve to death. The best materials, all things considered, are " raupenleim," or " dendrolene," prefer- ably the latter, as it remains viscid for the full period during which the insects hatch, and forms a perfect barrier beneath or through which no creature can crawl and live. A band six inches in width and a quarter of an inch or more in thickness over thick wrapping-paper will prove a perfect protection. Fluffy wool or cotton may also be employed, and the former is the most lasting, but less certain than the " ; A near relative of these canker-worms is the '' lime-tree moth,'' Hybernia tiliaria, which also attacks a variety of trees, and has at times been decidedly troublesome. The application of the arsenites will prove a complete protection in this case ; indeed, we may say of all the caterpillars belonging to this family, including the "canker-worms," that they can be controlled by the thor- ough application of stomach poisons to the plants upon which they 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 Smith, John Bernhard, 1858-1912. Philadelphia and London, J. B. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbenefic, bookyear1906
