. Common Illinois insects : and why they are interesting. Insects -- Illinois. Cecropia caterpillar, feeds on maple. Monarch Caterpillar on leaf of food plant apple, elm and 5 0 other trees and (Milkweed). (3x) shrubs. (Ux) A. Cecropia cocoon is a tough, water-proof, two layered case of silk bound tightly to a twig and made inconspicuous by leaf fragments stuck on the outside. In this capsule the helpless pupa spends the winter, emerging in May or June as an adult. Cecropia cocoon opened to show pupa a few weeks before emergence, (life size.) The silk is produced from glands under the skin tha
. Common Illinois insects : and why they are interesting. Insects -- Illinois. Cecropia caterpillar, feeds on maple. Monarch Caterpillar on leaf of food plant apple, elm and 5 0 other trees and (Milkweed). (3x) shrubs. (Ux) A. Cecropia cocoon is a tough, water-proof, two layered case of silk bound tightly to a twig and made inconspicuous by leaf fragments stuck on the outside. In this capsule the helpless pupa spends the winter, emerging in May or June as an adult. Cecropia cocoon opened to show pupa a few weeks before emergence, (life size.) The silk is produced from glands under the skin that open on the upper lip. It is distributed all around the caterpillar and then inside the cocoon by zig-zag mo- tions of the 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 Wright, A. Gilbert (Arthur Gilbert), 1909-. Springfield, Il. : Dept. of Registration and Education
Size: 1896px × 1318px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcontributoruniversityofillinoisurbanachamp
