The Nodose Rubble Crab, scientifically known as Paractaea rufopunctata, is a species of crab belonging to the family Xanthidae. This crab is commonly found in various marine habitats, exhibiting unique characteristics that make it easily identifiable.
Description & Characteristics
The Paractaea rufopunctata is characterized by its distinctive appearance. It possesses a carapace, or shell, that is typically a reddish-brown color and marked with numerous small, raised nodules. These nodules give the crab its common name, “Nodose Rubble Crab.” The carapace can reach a maximum size of about 40 mm in width, making it a relatively small crab. The crab’s legs are also adorned with nodules, and its claws are noticeably large and robust, which are useful for foraging and defense.
Habitat and Occurrence
The Paractaea rufopunctata is a common inhabitant of the intertidal zone, particularly in rocky areas and rubble fields. It is often found hiding beneath rocks, in crevices, or amongst seaweed. This crab is well-adapted to the fluctuating conditions of the intertidal zone, which experiences regular periods of exposure to air and water. Its preferred habitat includes the infralittoral zone, a marine region that extends from the low tide mark to a depth of about 20 meters, making it a prevalent presence in these aquatic ecosystems.
Taxonomy
The species Paractaea rufopunctata is classified within the animal kingdom and belongs to the Phylum Arthropoda. It is further categorized into the Class: Malacostraca, which encompasses a diverse group of crustaceans, and the Order: Decapoda, which includes crabs, lobsters, and shrimp. It is a member of the Family: Xanthidae, a family known for its diverse array of crab species.
Feeding
The Paractaea rufopunctata is a carnivorous crab, feeding primarily on a diet of other crustaceans and invertebrates. Its powerful claws allow it to efficiently capture and break down its prey, making it a formidable predator within its habitat.
Image References