Majidae

arthropod family - any of the arthropods

Brachyura, suborder Brachyura - an order of crustaceans (including true crabs) having a reduced abdomen folded against the ventral surface

spider crab - any of numerous crabs with very long legs and small triangular bodies

genus Maia, genus Maja, Maia, Maja - type genus of the Majidae; nearly cosmopolitan in distribution

genus Macrocheira, Macrocheira - giant crabs of Japan