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Porcelain crabs are an example of carcinisation, whereby a noncrab-like animal (in this case a relative of a squat lobster) evolves into an animal that resembles a true crab. [5] [6] Porcelain crabs can be distinguished from true crabs by the apparent number of walking legs (three instead of four pairs; the fourth pair is reduced and held ...
Petrolisthes cabrilloi, also known as the Cabrillo porcelain crab, is a species of crab. [1] Native to the Pacific coast of North America, it was first described to science by Steve Glassell in 1945. [2] [3] Its range is believed to be from Morro Bay to Baja California. [4]
Neopetrolisthes maculatus is a species of porcelain crab from the Indo-Pacific region. [2] It is a small, colourful crustacean with a porcelain-like shell. This porcelain crab is usually found within the stinging tentacles of a number of sea anemone species.
Porcelain crabs resemble true crabs, but are more closely related to squat lobsters and hermit crabs. [1]Carcinisation (American English: carcinization) is a form of convergent evolution in which non-crab crustaceans evolve a crab-like body plan.
Porcelain crabs differs from true crabs in having four rather than five pereiopods or walking limbs normally visible, and are more closely related to king crabs and hermit crabs. [2] This small porcelain crab has a carapace up to 20 millimetres (0.79 in) wide with a rounded outline. The body, limbs and claws are flattened dorsally.
Petrolisthes armatus, the green porcelain crab, is a species of small porcelain crab in the family Porcellanidae. It is believed to be native to Brazil but has spread to other parts of the world. Populations in the south eastern part of the United States have increased dramatically and the species is considered to be an invasive species.
Pisidia longicornis, the long-clawed porcelain crab, is a species of porcelain crab that lives in the north-eastern Atlantic Ocean. It varies from reddish to white, and grows to a carapace width of 1 cm (0.4 in). It was first named by Carl Linnaeus in 1767, although the etymology remains unclear.
Petrolisthes cinctipes is a species of marine porcelain crab found in the eastern Pacific Ocean, from British Columbia to Mexico. [1] This species was first described by John Witt Randall in 1840. [2]