insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. Insects have segmented bodies, jointed legs, and external skeletons (exoskeletons).
Apr 19, 2024
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In general, the class Insecta can be classified by having three body regions (head, thorax, and abdomen), one pair of antennae, and three pairs of legs.