The Button Crab, scientifically known as Exopalicus maculatus, is a fascinating crustacean found in marine environments. It belongs to a group of crabs known as “button crabs,” characterized by their distinctive, compact bodies. This species is particularly intriguing due to its unique appearance and limited information available regarding its biology.
Description & Characteristics
The Exopalicus maculatus is a small crab, with a maximum size reaching up to 20 millimeters. Its body is characterized by its rounded, flattened shape, resembling a button. The carapace, or shell, is typically smooth with small, scattered bumps or granules, giving it a textured appearance. The color of the Exopalicus maculatus can vary depending on its environment, often blending in with its surroundings to avoid predation. The crab possesses ten legs, with the first pair modified into a pair of small, pincer-like claws used for grasping and defense.
Habitat and Occurrence
The Exopalicus maculatus is a benthic species, meaning it resides on or near the bottom of the ocean floor. This species has been observed in various marine zones, including the Indo-Pacific region. However, due to its small size and cryptic habits, it is often overlooked and its distribution remains somewhat unclear. Further research is required to fully understand its range and abundance.
Taxonomy
The Exopalicus maculatus belongs to the Class Malacostraca, which includes a diverse array of crustaceans, ranging from lobsters and shrimps to crabs and krill. It is further classified within the Order Decapoda, a group characterized by having ten legs, including crabs, lobsters, crayfish, and shrimps. Finally, it is part of the Family Palicidae, which comprises a small number of species, primarily known for their flattened, button-shaped bodies.
Feeding
Food info: No reliable information available
Image References