Cyclograpsus
Cyclograpsus is a genus of crabs belonging to the family Grapsidae, commonly known as the shore crabs. These crabs are found in intertidal and subtidal zones, primarily along the coasts of the Indo-Pacific region.
Common Names
Members of the genus Cyclograpsus are often referred to as "cyclic crabs" or "circle crabs" due to their tendency to move in circular patterns. Some species may also have specific common names, such as the "orange-footed crab" (Cyclograpsus granulatus) or the "red-legged crab" (Cyclograpsus punctatus).
Characteristics
Cyclograpsus crabs are typically small to medium-sized, with a carapace width ranging from a few millimeters to several centimeters. They have a distinctive, almost circular carapace, with a slightly wider front than back. Their eyes are prominent, and their antennae are short and stout. Their legs are strong and adapted for walking, and some species, such as Cyclograpsus granulatus, have brightly colored legs.
Environment
Cyclograpsus crabs are found in a variety of intertidal and subtidal habitats, including rocky shores, sandy beaches, and mangrove forests. They are often found under rocks, in crevices, or amongst seaweed, where they feed on algae, detritus, and small invertebrates.
Distribution
The genus Cyclograpsus is distributed throughout the Indo-Pacific region, from the eastern coast of Africa to the western coast of the Americas. Different species have distinct geographic ranges, with some being restricted to specific areas, while others are more widely distributed.
Notable Species
- Cyclograpsus granulatus (Orange-footed crab)
- Cyclograpsus punctatus (Red-legged crab)
- Cyclograpsus lavauxi
- Cyclograpsus integer