Despite having the common name ‘crab’, hermit crabs are not ‘true’ crabs, meaning they are not a part of the clade Brachyura. They belong to its sister group, Anomura, which also contains porcelain crabs, squat lobsters, mole crabs, and king crabs. Broadly speaking, hermit crabs encompass the superfamily Paguroidea which includes the king crabs.
