Elementary entomology (1912) Elementary entomology elementaryento00sand Year: 1912 66 ELEMENTARY ENTOMOLOGY will wriggle a little, but otherwise it hangs there mute and helpless. On the inside, however, the tissues are being made over in such a wonderful way that in about two weeks, from the mummy case into which the caterpillar entered, there comes a beautiful butterfly. When it first breaks the mummy shell its wings are very small, although its body, ' feelers,' and legs are well developed. By means of the latter it clings to the empty chrysalis while the wings expand. A butterfly in this p
Elementary entomology (1912) Elementary entomology elementaryento00sand Year: 1912 66 ELEMENTARY ENTOMOLOGY will wriggle a little, but otherwise it hangs there mute and helpless. On the inside, however, the tissues are being made over in such a wonderful way that in about two weeks, from the mummy case into which the caterpillar entered, there comes a beautiful butterfly. When it first breaks the mummy shell its wings are very small, although its body, ' feelers,' and legs are well developed. By means of the latter it clings to the empty chrysalis while the wings expand. A butterfly in this position, with its wings nearly expanded, is shown in Fig. 86, from a photograph taken from a living specimen. In the course of half an hour the wings become fully de- veloped, and the butterfly is likely to crawl to some firmer support, where it will rest an hour or so before venturing on its first flight. In New Hampshire there seems to be but a single gen- eration a year, the newly emerged butterflies appear- ing in July or August and dis- appearing during August and September, though they are seen occasionally on warm days in late fall. Under the side of a log, beneath the loose bark of a dead tree, in woodpiles, and in similar sit- uations the butterflies are to be found during the winter lying flat on the side, sus- pended under a culvert, or in a hollow tree. Apparently they are dead, but if taken into a warm room, they will quickly revive and fly about, and if given a little sugar-water for food, will live for some time. Often in summer they will drop on one side, motionless, evidently feigning death, and if lying on a background of dead leaves, are very difficult to see. Fig. 86. Newly emerged mourning cloak butterfly hanging to empty chrysalis while its wings expand and harden (Photograph by Weed)
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Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
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