Leptodius
Leptodius is a genus of crabs in the family Xanthidae. They are known as the “smooth-clawed crabs” and are found throughout the Indo-Pacific region. These crabs are generally small in size, with a characteristic smooth, rounded carapace and a pair of smooth, rounded claws. They are typically found in intertidal and shallow subtidal environments, often associated with coral reefs and rocky shores.
Common Names
Crabs in the genus Leptodius are commonly known as "smooth-clawed crabs" due to the smooth texture of their claws. Some species also have more specific common names, such as the "blue-legged crab" (Leptodius exaratus) and the "orange-legged crab" (Leptodius sanguineus).
Characteristics
Crabs in the genus Leptodius share several distinct characteristics:
- Smooth carapace: They have a smooth, rounded carapace with no spines or bumps.
- Smooth claws: Their claws are also smooth and rounded, lacking any teeth or serrations.
- Small size: They are generally small crabs, typically reaching a carapace width of less than 5 cm.
- Varied coloration: They can display a range of colors, including brown, grey, orange, and red. Some species have distinctive markings or patterns.
- Omnivorous diet: They are omnivores and feed on a variety of organisms, including algae, sponges, and small invertebrates.
Environments
Leptodius crabs are found in a variety of marine environments, including:
- Intertidal zones: They are commonly found in rocky intertidal areas, where they live in crevices and under rocks.
- Shallow subtidal zones: They can also be found in shallow subtidal areas, often associated with coral reefs and seagrass beds.
- Mangrove forests: Some species may also inhabit mangrove forests.
References