Beetles Ch4[chaa' ; Ch1[chaa'

Beetles are the most numerous and common of all insect groups. They belong to the order Coleoptera. As many as 300,000 different species of beetles have been identified. They live everywhere except in the ocean. Most live on land but some live in fresh water. Beetles have horny front wings that serve as a protective shell-like covering. This covering protects them from injury and dehydration. Most beetles lead solitary lives. Adult beetles die within months after mating, leaving the young beetles to develop without parents. There are a few types of beetles that are social and spend at least some time in a family group.

Beetles differ in their sources of food. Some feed on crops, trees, or stored food. Others, such as ladybugs, eat the insects that threaten crops, and still others eat dead plants and animals, helping to remove them from the environment. Some common beetles are: ladybugs, fireflies, weevils, leaf beetles, ground beetles, rove beetles, scarabs, and click beetles.

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