The insects: arthropods with a three-part body (head, thorax, abdomen), three pairs of legs, and, in most species, one or two pairs of wings as adults. Insecta is the single most species-rich class of any kind of organism on Earth, and more species of beetle alone have been described than every non-insect animal phylum combined.
Facts
Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Connections
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Long-Form Articles
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