. A treatise on some of the insects injurious to vegetation . Insect pests. 432 LEPIDOPTEEA. Fig. 214. There are a few short, whitish hairs thinly scattered over the body, which is pale yellow, with three slender black lines on the back, and a broad dusky stijpe, also marked with three black lines, on each side; and the head, fore legs, and spiracles are black. When fully grown, these caterpillars measure about an inch and a half in length. They live together, in swarms of twenty or more individuals, in a nest (Fig. 214) made of a single leaf fold- ed or curled at the sides, and lined with a t
. A treatise on some of the insects injurious to vegetation . Insect pests. 432 LEPIDOPTEEA. Fig. 214. There are a few short, whitish hairs thinly scattered over the body, which is pale yellow, with three slender black lines on the back, and a broad dusky stijpe, also marked with three black lines, on each side; and the head, fore legs, and spiracles are black. When fully grown, these caterpillars measure about an inch and a half in length. They live together, in swarms of twenty or more individuals, in a nest (Fig. 214) made of a single leaf fold- ed or curled at the sides, and lined with a thin web of silk. An opening is left at each end of the nest; through the lower one the dirt made by the in- sects falls, and through the up- per one, which is next to the leaf-stalk, the caterpillars go out to feed upon the leaves near to their nests.' When young they sometimes fold up one side of a leaf for a nest, and eat the other half. The stalks of the leaves, to which their nests are hung, become covered with silk from the threads car- ried along by the caterpillars in going over them; and these threads help to secure the nests to the branches. They eat all parts of the leaves except the stalks and larger veins, and frequently strip long shoots of their foliage in a very few days. Towards the end of Sep- tember or early in October, according to the age of the different broods, they descend from the trees, disperse, and seek a shelter in crevices or under leaves and rubbish on the ground, where they make their cocoons. These are thin, irregular, silken webs, so loosely spun that the in-. 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 Harris, Thaddeus William, 1795-1856; Flint, Charles Louis, 1824-1889. Boston : William White, printer to the state
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