. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE LEAVES. g5 closely, we find it to be almost transparent, and one is led to wonder why so frail a creature should select so bleak a season in which to appear; but, delicate as its structure seems to be, it is nevertheless one of the hardiest of its race, requiring, indeed, a considerable degree of cold for its perfect develop- ment. These are the male moths of the canker-worm, and chiefly those of pometaria, the fall canker-worm. The females are wingless. The eggs of this species (a and
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE LEAVES. g5 closely, we find it to be almost transparent, and one is led to wonder why so frail a creature should select so bleak a season in which to appear; but, delicate as its structure seems to be, it is nevertheless one of the hardiest of its race, requiring, indeed, a considerable degree of cold for its perfect develop- ment. These are the male moths of the canker-worm, and chiefly those of pometaria, the fall canker-worm. The females are wingless. The eggs of this species (a and b, Fig. 59) are flattened above, have a central puncture and a brown circle near the border, are laid side by side in regular masses [e, Jb ig. ov), oiten as many as a hundred together, and generally placed in exposed situations on the twigs or branches of the tree. They usually hatch about the time when the young leaves of the apple push from the bud, when the little canker- worms cluster upon and consume the tender leaves, and, on the approach of cold or wet weather, creep for shelter into the bosom of the expanding bud or into the opening flowers. The newly-hatched caterpillar is of a pale olive-green color, with the head and horny part of the second segment of a very pale hue. When full grown, it measures about an inch in length, presenting the appearance shown at/. Fig. 59 ; in the same figure, c represents a side view of one of the segments of the body, enlarged so as to show its markings. These caterpillars are called loopers, because they alternately loop and extend their bodies when in motion. They are also known as measuring-worms. They vary in color from greenish yellow to dusky or even dark brown, with broad longitudinal yellowish or paler stripes along each side. When not eating, they usually assume a stiff posture, either flat and parallel with the twigs on which they rest, or at an angle of about forty-five degrees; in either case, since they closely 5. Please n
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
