Carapace wider than long with ridges; front with 3 lobes, with five anterolateral teeth. Fifth segment (merus) of claw (cheliped) without distal tooth on inner border; sixth segment (carpus) with strong tooth on inner angle, generally lacking outer tooth; last segment of claw (dactylus) with 3 dorsal ridges. With a broad sharp last segment on the swimming leg (half as wide as long). Up to 26 mm wide.
Swimming crabs swim only poorly and some never swim at all. The most accomplished swimming crabs have broad paddle-like last legs that get them off the bottom where they spend most of their time buried in the sand. Many swimming crabs are active and aggressive. Some taxonomists believe that several species masquerade under this name and that the true corrugatus may not live in Australia.
Intertidal, to 147 m depth.
Atlantic-Indo-west Pacific Oceans including southern Australia.
Not harmful but a nip from large claws could be painful
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed