Stenorhynchus yangi is a species of spider crab, a group of decapod crustaceans known for their long, spindly legs. It is a relatively small crab, reaching a maximum size of around 5 centimeters in carapace width. Like other spider crabs, Stenorhynchus yangi boasts long, spiny legs that are proportionally much longer than its body. This allows them to navigate through rocky crevices and seagrass beds with ease.
Description & Characteristics
Stenorhynchus yangi can be distinguished by its distinctive, flattened carapace, often adorned with small, scattered tubercles. The carapace is generally a mottled brown or reddish-brown color, blending well with the seafloor. Its chelipeds, or claws, are relatively slender and adorned with sharp spines, likely used for defense and the capture of prey.
Habitat and Occurrence
Stenorhynchus yangi is typically found in shallow coastal waters, particularly in rocky reefs, seagrass beds, and sandy bottoms. This adaptable crab is known to inhabit both the intertidal zone, the area between high and low tides, and the subtidal zone, which extends below the lowest tide mark. Its geographical distribution encompasses various marine regions, suggesting a tolerance for a range of environmental conditions.
Taxonomy
Stenorhynchus yangi belongs to the Class: Malacostraca, Order: Decapoda, and Family: Inachoididae, a family of spider crabs renowned for their elongated legs and complex, often intricate carapace structures. The Inachoididae family is diverse, encompassing a wide array of species found in various marine environments across the globe. Stenorhynchus yangi‘s classification within this family highlights its unique evolutionary history and adaptations.
Feeding
Stenorhynchus yangi is an opportunistic omnivore, feeding on a variety of food sources. Its diet includes small invertebrates, such as worms, mollusks, and crustaceans, as well as algae and detritus. This dietary flexibility likely contributes to its success in a variety of habitats.
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