Cyclograpsus henshawi

, Cyclograpsus henshawi
Water Type: Marine

Cyclograpsus henshawi is a species of crab that belongs to the family Varunidae. It is commonly known as the “henshaw’s crab” and is a fascinating and intriguing creature that plays a vital role in its marine environment.

Description & Characteristics

Cyclograpsus henshawi is a small, round crab that typically grows to a maximum size of around 2.5 centimeters in width. Its carapace is smooth and slightly convex, often displaying a range of colors from gray to brown to reddish-brown. The crab’s legs are relatively short and stout, and its claws are small and pointed. The underside of the crab is covered in hair-like setae, which help it to grip onto surfaces.

Habitat and Occurrence

Cyclograpsus henshawi is a common inhabitant of rocky intertidal zones, often found in tide pools and on exposed rocks. This species is frequently found in the littoral zone, a marine zone that lies between the high tide mark and the low tide mark. This zone is subject to fluctuating water levels and temperature variations, making it a challenging environment for many marine organisms. Cyclograpsus henshawi is well-adapted to these conditions, with its ability to tolerate both air exposure and immersion in water. Its distribution extends across the Pacific Ocean, where it can be found along the coasts of California, Oregon, and Washington. This crab’s prevalence in these coastal areas highlights its adaptability and resilience in these unique ecosystems.

Taxonomy

Cyclograpsus henshawi is classified within the animal kingdom, belonging to the phylum Arthropoda, which encompasses a vast array of invertebrate species. Specifically, it falls under the Class: Malacostraca, which includes a diverse group of crustaceans, including crabs, lobsters, shrimp, and crayfish. The crab’s order is Decapoda, which includes all decapod crustaceans, characterized by their ten legs, and the family Varunidae, which contains various crab species found across the globe.

Feeding

Cyclograpsus henshawi is primarily an omnivorous crab, meaning it consumes a variety of food sources. Its diet often consists of algae, detritus, and small invertebrates. These crabs are crucial in their ecosystem, contributing to the breakdown of organic matter and contributing to the cycling of nutrients within their habitats.

Associated Species

Image References

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