. The book of the garden. Gardening. ated, with a view to make it more adhesive; and tobacco-water has also been employed, ap- plying it both early in the morning andlate in the afternoon. We think, however, the application would be more effective if used during the night, at which time the insect is traversing the foliage, and unprotected by it. Dusting the trees late in the evening with caustic lime is a much more effectual remedy, and of more easy application. The large p6ar astyages—Astyages (Ooleo- pjiora) hemerobiella—&g. 202, although very Fig. 202. SLUG-WOKM AND PERFECT INSECT. ins
. The book of the garden. Gardening. ated, with a view to make it more adhesive; and tobacco-water has also been employed, ap- plying it both early in the morning andlate in the afternoon. We think, however, the application would be more effective if used during the night, at which time the insect is traversing the foliage, and unprotected by it. Dusting the trees late in the evening with caustic lime is a much more effectual remedy, and of more easy application. The large p6ar astyages—Astyages (Ooleo- pjiora) hemerobiella—&g. 202, although very Fig. 202. SLUG-WOKM AND PERFECT INSECT. insect, so far as its effects are concerned, to those who cultivate the pear and the cherry, for it is equally injurious to both, often stripping the trees of their foliage. In their caterpillar state they are both singular and inactive, repos- ing upon the foliage more like black slugs or young tadpoles than the larvae of a sawfly. Their being also covered with a moist slimy mat- ter gives them the appearance of the excrements of birds. The caterpillar has six pectoral, and fourteen abdominal, but no anal feet; the whole body is of a deep bottle-green colour, thorax very much dilated, nearly concealing the whole head. They feed entirely on the upper sides of the foliage, retreating beneath the leaves during the day, and wandering about during the night in search of fresh food. They cast off their bottle-green skins when about a month old, and afterwards appear in a ooat of a buff colour, which has led to their being considered, in this state, as a distinct insect. Shortly after this change they quit the trees, and retreat under the earth, where they repose till about the end of July the following year, when they emerge in their fly state, and commence the process of re- production. Ruricola, in " The Gardeners' Chro- nicle," observes, in describing this insect, that he is inclined to believe that there may be two sorts of this genus which feed upon pear-leaves; for
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
