Which animal phylum includes insects, spiders, and crustaceans?

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Insects, spiders, and crustaceans are all members of the phylum Arthropoda.

As the largest phylum in the animal kingdom, Arthropoda encompasses approximately 84 percent of all known animal species. These organisms are characterized by a segmented body and a jointed exoskeleton composed of chitin and protein.123

The phylum is divided into several subphyla that categorize these diverse groups:
* Hexapoda: Includes insects.12
* Chelicerata: Includes arachnids, such as spiders.12
* Crustacea: Includes crustaceans, such as crabs and lobsters.12