Plagusia

Plagusia is a genus of crabs in the family Plagusiidae. They are commonly known as “flat crabs” or “rock crabs”. These crabs are characterized by their flattened bodies and long, narrow legs, allowing them to navigate tightly packed spaces in their preferred rocky habitats.

Characteristics

Crabs in the genus Plagusia are distinguished by several features:

  • Flattened body, which aids in navigating tight spaces.
  • Long, narrow legs for mobility.
  • Smooth, carapace with a slightly raised margin.
  • Eyes located on stalks at the front of the carapace.
  • Small, pointed claws.

Environments

Plagusia crabs are found in intertidal and shallow subtidal zones. They are often found in rocky areas, crevices, and tide pools, where they seek shelter and forage for food.

Distribution

Plagusia crabs are found in the Indo-Pacific region, including Australia, New Zealand, and Southeast Asia.

Species

Several species of Plagusia crabs are recognized, including:

  • Plagusia depressa (Common flat crab)
  • Plagusia chabrus (Small flat crab)
  • Plagusia squamosa (Scaly flat crab)
  • Plagusia dentipes (Toothed flat crab)

References

For further information on Plagusia crabs, consult these reliable online resources: