Insects injurious to fruits . ker-worms cluster upon and consume the tender leaves, and, onthe approach of cold or wet weather, creep for shelter into thebosom of the expanding buJ or into the opening newly-hatched caterpillar is of a pale olive-green color,with the head and horny part of the second segment of a verypale hue. When full grown, it measures about an inch inlength, presenting the appearance shown at/. Fig. 59 ; in thesame figure, c represents a side view of one of the segmentsof the body, enlarged so as to show its markings. Thesecaterpillars are called loopers, becaus
Insects injurious to fruits . ker-worms cluster upon and consume the tender leaves, and, onthe approach of cold or wet weather, creep for shelter into thebosom of the expanding buJ or into the opening newly-hatched caterpillar is of a pale olive-green color,with the head and horny part of the second segment of a verypale hue. When full grown, it measures about an inch inlength, presenting the appearance shown at/. Fig. 59 ; in thesame figure, c represents a side view of one of the segmentsof the body, enlarged so as to show its markings. Thesecaterpillars are called loopers, because they alternately loopand extend their bodies when in motion. Tney are alsoknown as measuring-worms. They vary in color fromgreenish yellow to dusky or even dark brown, with broadlongitudinal yellowish or paler stripes along each side. Whennot , they usually assume a stiff posture, either flatand parallel with the twigs on which they rest, or at an angleof about forty-five degrees; in either case, since they closely 6. 66 INSECTS INJURIOUS TO THE APPLE. resemble in color the branch on which they rest, they usu-ally elude detection. When full grown, they leave the treeseither by creeping down the trunk or by letting themselvesdown by silken threads from the branches. When thus sus-pended in great numbers, as is frequently the case, under thelimbs of trees overhanging roads and sidewalks, they becomea great annoyance, especially to sensitive people, and are oftenswept off by passing vehicles, and in this manner sometimesdistributed over a considerable area. Having reached the ground, they burrow into it to a depthof from two to six inches, where they make a rather toughcocoon of buff-colored silk, interwoven with particles ofearth. The chrysalis is about half an inch long^ of a lightgrayish-brown color, that of the male slendei and furnishedwith wing-cases, that of the female larger and without wing-cases. The chrysalids remain in the ground throughout thesummer, and the
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Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
