. Canadian butterflies worth knowing [microform]. Butterflies; Papillons. 8 BUTTERFLIES The Change to the Chrysalis (See plate, pages SSSS.) A week or ten days after the last moult of its caterpillar growth the larva commonly becomes full fed and ready to change to the chrysalis state. The details of the way in which this IS accomplished vary greatly with different butterflies, aa will be noted in the stories of many species later in this book. In general, however, the caterpillar provides a web of silk which it spins against some surface where the chrysalis will be secure and in this web it e
. Canadian butterflies worth knowing [microform]. Butterflies; Papillons. 8 BUTTERFLIES The Change to the Chrysalis (See plate, pages SSSS.) A week or ten days after the last moult of its caterpillar growth the larva commonly becomes full fed and ready to change to the chrysalis state. The details of the way in which this IS accomplished vary greatly with different butterflies, aa will be noted in the stories of many species later in this book. In general, however, the caterpillar provides a web of silk which it spins against some surface where the chrysalis will be secure and in this web it en- tangles its hind legs. Sometimes there is the additional protection of a loop of silk over the front end of the body. After the legs have become entangled the caterpillar hangs downward until the skin splits open along the median line of the back and gradually shrinks upward until it is almost free, showing as it comes off a curious creature which has some of the characteristic featiu-es of a chrysalis. It is seldom at this stage of the same shape as the chrysalis. When the caterpillar's skin is nearly off this chrysalis-like object usually wriggles its body qmckly in a manner to entangle a curious set of hooks attached to the upper end in the web of silken thread. This hook-like projectio'. is called the cremaster, and it serves a very important purpose in holding the chrysalis m Swallowtail Chrysalis, •bowing f») the loop of silk over thorax. (ATttf Riley). 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 Weed, Clarence M. (Clarence Moores), 1864-1947. Toronto : Musson
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Keywords: ., bookcentury1900, bookdecade1910, bookpubl, booksubjectbutterflies
