Insect artizans and their work . Cocoons of a Silk-moth. Page 10 Three cocoons of the Cecropia-moth, the lowest example cut open to show structure and chrysalis. It will be seen that there are really two cocoons of firm texture with an intermediate packing of looser silk. The provision for easy exit of the moth is also evident. Photo by A SPINNERS AND WEAVERS n beautiful green shaded with blue, and from each ofthe rings or segments of its body there stand outfive stout fleshy spines of red, blue, and yellow,some of them knobbed, and the knobs supportingsharp black bristles. There are
Insect artizans and their work . Cocoons of a Silk-moth. Page 10 Three cocoons of the Cecropia-moth, the lowest example cut open to show structure and chrysalis. It will be seen that there are really two cocoons of firm texture with an intermediate packing of looser silk. The provision for easy exit of the moth is also evident. Photo by A SPINNERS AND WEAVERS n beautiful green shaded with blue, and from each ofthe rings or segments of its body there stand outfive stout fleshy spines of red, blue, and yellow,some of them knobbed, and the knobs supportingsharp black bristles. There are several other large moths, both inAmerica and India, that produce large silk cocoonsof varying texture. In that of the Cecropia Moththe outer portion is so closely woven and theinterstices filled in with liquid silk that it is astough and firm as vellum; the inner cocoon is ofsimilar consistence, though thinner. An Indianspecies is described as having the cocoon of leather-like consistence, and Colonel Sykes says it is cutinto strips by the Mahrattas and used as thongsto bind the barrel and stock of their guns of the insects that have to make their waythrough such resisting cocoons when they reachmaturity are helped by the chrysalis having a sharpspine in front of the head, with which the moresolid envelope may be pierced. In
Size: 1219px × 2050px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
