. Common Illinois insects : and why they are interesting. Insects -- Illinois. Periodical Cicada { Magicicada septendecim). Both the 13 year and the 17 year varieties of this insect are found in Illinois. It was formerly contended by superstitious folk that the infrequent appear- ance of swarms of these insects portended war. a belief confirmed by the reddish "W" on the wings! (life size) Skin shed when nymph of com- mon cicada emerged from soil after period of 4 years (time var- ies with different species). (2x) heavily infested tree will l)e made to look unsightly. Damage to trees
. Common Illinois insects : and why they are interesting. Insects -- Illinois. Periodical Cicada { Magicicada septendecim). Both the 13 year and the 17 year varieties of this insect are found in Illinois. It was formerly contended by superstitious folk that the infrequent appear- ance of swarms of these insects portended war. a belief confirmed by the reddish "W" on the wings! (life size) Skin shed when nymph of com- mon cicada emerged from soil after period of 4 years (time var- ies with different species). (2x) heavily infested tree will l)e made to look unsightly. Damage to trees by nymphs is considered of no importance. 2. The Monarch or Milkweed Butterfly. All butterflies and moths (Order Lepidoptera) go through a transformation known as com])lete metamorphosis. There is no resemblance, whatsoever, between the young, called a larva, and the adult, known as an imago. The larva might be considered a sort of food getting machine whose activity permits develop-. 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: 1301px × 1920px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcontributoruniversityofillinoisurbanachamp
