. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. 192 DESTRUCTIVE INSECT:^. oval, brown eggs on the bark of the trunks of the trees from six to eighteen inches from the ground. From the egg there hatches in a week or ten days a minute larva—the young borer—which at once works its way into a crevice of the bark, and soon begins feeding on the inner layers of the bark. It continues to feed in this manner, gradually enlarging its bur- row under the bark, until winter sets in, when it stops feeding and h
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. 192 DESTRUCTIVE INSECT:^. oval, brown eggs on the bark of the trunks of the trees from six to eighteen inches from the ground. From the egg there hatches in a week or ten days a minute larva—the young borer—which at once works its way into a crevice of the bark, and soon begins feeding on the inner layers of the bark. It continues to feed in this manner, gradually enlarging its bur- row under the bark, until winter sets in, when it stops feeding and hibernates during the winter, either in its burrow or in a thin hibernaculum made over itself on the bark near the surface of the soil. The winter is always spent as a larva or borer, a few of them being nearly full-grown, but most of. Fig. 258.—The Peach-Tree Borer, a, Female moth; *, male ; c, full-grown larva ; d, female pupa ; e, male pupa ; /, cocoon with pupa skin partially ex- tended ; all natural size. (U. S. Div. of Entomology.) them being considerably less than one-half grown. In the spring, usually about May ist in New York, they break their winter's fast and grow rapidly for a month or more, most of them getting their full growth in June. They then leave their burrows and spin about themselves a brown cocoon (Fig. 258/) at the base of the tree, usually at the surface of the soil. A few days after its cocoon is made the borer changes to a pupa (Fig. 258 d, e), in which stage it remains for about three weeks, usually in June in New York. From the pupa the moth emerges, thus completing its life-cycle in a year, fully ten months of which are usually spent as a borer in the tree, the remainder or a little more than a month being spent in the 'Cgg, pupa, and adult stages. About the middle of July all stages of the insect may be found in some orchards. The above brief sketch of the life of the peach-tree borer will apply. Please note that these images are extracted fr
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