Arenaeus

Arenaeus is a genus of swimming crabs in the family Portunidae. There are at least two described species in Arenaeus.

Species
These two species belong to the genus Arenaeus:
 * Arenaeus cribrarius (Lamarck, 1818) (speckled swimming crab)
 * Arenaeus mexicanus (Gerstaecker, 1856)