. Common Illinois insects : and why they are interesting. Insects -- Illinois. 3 is much better than none at all, but one of the doublets or trip- lets is recommended. The well- known net is essential if one wants to collect for keeps. Also a killing jar which can be a pickle-bottle with tight fitting lid. A small wad of cotton should be fastened to the lid and soaked with cleaning fluid (carbon tetrachloride). Turn over boards, look under bark, visit the beds of wild and cul- tivated flowers. The close tie-in that al- ways exists between the plant and animal worlds is wonder- fidly displayed
. Common Illinois insects : and why they are interesting. Insects -- Illinois. 3 is much better than none at all, but one of the doublets or trip- lets is recommended. The well- known net is essential if one wants to collect for keeps. Also a killing jar which can be a pickle-bottle with tight fitting lid. A small wad of cotton should be fastened to the lid and soaked with cleaning fluid (carbon tetrachloride). Turn over boards, look under bark, visit the beds of wild and cul- tivated flowers. The close tie-in that al- ways exists between the plant and animal worlds is wonder- fidly displayed by insects. Everyone knows that animals depend on plants for food. (Platers of other animals de- vour plant-eaters primarily.) It is among the plant-eating insects that most intimate and complex relationships are maintained between these two great kingdoms of living organisms. This point will again come up when bees and pollenization are discussed. The frequent use of specific food plants, called hosts, is well illustrated by the milkweed bug, whose young, called nymphs, feed exclusively on plants of the milkweed family. One may find these black and orange insects on any of several kinds of milkweed from J une to October. The great consumers of green foliage are the caterpillars. Some caterpillars feed on practically every kind of growing plant. They are the young or lar\ae of moths and butterflies and are as varied as the adults. A large group are known as measuring worms, inch worms, or. Measuring worm ( Species unknown ) Walks with loop, becomes a moth (Family Geometridae). White specks are eggs of wasp parasite. (4x). 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
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