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Insects

Insecta | Hexapoda

Insects are invertebrate arthropods (class Insecta/Hexapoda) with a chitinous exoskeleton and a body divided into three main regions: head, thorax, and abdomen. The head typically bears the mouthparts, eyes, and one pair of antennae; the thorax has three pairs of jointed legs and usually one or two pairs of wings in adults; and the abdomen contains most digestive, excretory, and reproductive organs. Insects are extraordinarily diverse: there are about 1,000,000 described species, representing roughly three-fourths of all described animal species.

Insects are invertebrate arthropods (class Insecta/Hexapoda) with a chitinous exoskeleton and a body divided into three main regions: head, thorax, and abdomen. The head typically bears the mouthparts, eyes, and one pair of antennae; the thorax has three pairs of jointed legs and usually one or two pairs of wings in adults; and the abdomen contains most digestive, excretory, and reproductive organs. Insects are extraordinarily diverse: there are about 1,000,000 described species, representing roughly three-fourths of all described animal species.