. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. 60 INSECTS INJURIOUS TO THE APPLE. Since the female is wingless^ and invariably attaches her eggs to the outside of her own cocoon, the insect can only spread by the wanderings of the caterpillars, or the careless introduction of eggs on young trees. No doubt the latter has been the most prolific source of mischief. Although not usually very injurious, it becomes at times a perfect pest to the fruit-grower, stripping the trees almost bare of leaves and disfiguring the fruit by gnawing its surface. W
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. 60 INSECTS INJURIOUS TO THE APPLE. Since the female is wingless^ and invariably attaches her eggs to the outside of her own cocoon, the insect can only spread by the wanderings of the caterpillars, or the careless introduction of eggs on young trees. No doubt the latter has been the most prolific source of mischief. Although not usually very injurious, it becomes at times a perfect pest to the fruit-grower, stripping the trees almost bare of leaves and disfiguring the fruit by gnawing its surface. While very partial to the apple, it attacks also the plum and pear, and is said to feed occasionally on the elm, maple, horse-chest- nut, and oak. Remedies,âThe increase of this insect may be easily pre- vented by collecting and destroying the eggs during the win- ter months. In gathering the cocoons, all those having no egg-masses attached should be left, as they contain either the empty chrysalids of the male or the chrysalids of parasites. Nine different species of flies, four-winged and two-winged, are known to be parasitic on this insect in the caterpillar state. No. 23.âThe Yellow-necked Apple-tree Caterpillar. Datana ministra (Drury). The moth of this species was first described by Mr. Drury, an eminent English entomologist, in 1773, from specimens received by him from New York. It measures, when its wings are expanded, about two inches across (see Fig. 54), and is of a /^â 5^jf '^1^^^^^^-^^ light-brown color, with the ' ' '"^ " "*' head and a large spot on the thorax chestnut-brown. On the fore wings there are from three to ^ve transverse brown lines, one or two spots near the middle (sometimes wanting), and the outer margin also of the same color. The hind wings are pale yellow, without markings. When in repose, the hinder part of its. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabi
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
