Glossary Definition
insect
Insects are a group of arthropods distinguished by the following characters:
  • a body divided into head, thorax, and abdomen
  • one pair of antennae, three pairs of mouth appendages, three pairs of legs on thorax, and often one or two pairs of wings

body divided into head, thorax, and abdomen, three pairs of legs on thorax, and often one or two pairs of wings

one pair of antennae, three pairs of mouth appendages

Examples of insects include flies, moths and beetles.

Flies, moths and beetles are all insects

Photos by T. W. Davies © California Academy of Sciences

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