Herbstia

Herbstia is a genus of crabs in the family Xanthidae. They are commonly known as “flat crabs” due to their flattened carapace. The genus encompasses several species distributed across the Atlantic and Indo-Pacific regions. These crabs are characterized by their flattened bodies, often resembling small, flattened, and somewhat oval-shaped rocks. They are typically found in intertidal and shallow-water environments.

Herbstia camptacantha

Common Names

While the scientific name is Herbstia, members of this genus are often referred to by various common names, including:

  • Flat crabs
  • Rock crabs
  • Sand crabs

Characteristics

Herbstia crabs exhibit a number of distinguishing features, including:

  • Flattened carapace: This characteristic gives them their common name "flat crabs." The carapace is usually broad and oval-shaped.
  • Small size: Herbstia crabs are relatively small, typically reaching a maximum carapace width of a few inches.
  • Coloration: They often display a mottled or speckled pattern, often with shades of brown, gray, or reddish-brown, helping them blend into their environment.
  • Antennae: Their antennae are relatively short and stout.
  • Chelipeds: They possess a pair of chelipeds, or claws, which are often used for defense and feeding.

Environment

Herbstia crabs are typically found in intertidal and shallow-water environments, such as rocky shores, sand flats, and seagrass beds. They are often found under rocks, in crevices, or buried in the sediment. These crabs are often active during the day, foraging for food and moving around their environment.

References

For further information on Herbstia crabs, refer to these reliable sources: