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Petrolisthes coccineus is another porcelain crab whose carapace is characterized by short, fine ribs in the stomach and anterior gill area.
Its rostrum is weakly trilobed and has an epibranchial spine at the anterior end of the throat groove.
The gill margin is convex, and the propodus of the chelipeds has short, fine stripes on the dorsal surface.
The walking legs have three horn-like spines and tufts of setae on the flexor margin of each dactylus, carpus, and merus without spines on the margins.
The propodia and dactyli of the walking legs are red, with the propodia each having two or three white bands.
The carapace reaches a size of just under 1 cm.
The porcelain crab likes to stay under stones, where it stirs up sediment and filters out organic particles with the help of its elongated hairs on its mouthparts.
In living animals, the carapace and chelipeds are dark brown or greenish-brown.
Synonyms:
Petrolisthes nipponensis Miyake, 1937 · unaccepted > junior subjective synonym
Porcellana barbata Heller, 1862 · unaccepted > junior subjective synonym
Porcellana coccinea Owen, 1839 · unaccepted > superseded combination
Its rostrum is weakly trilobed and has an epibranchial spine at the anterior end of the throat groove.
The gill margin is convex, and the propodus of the chelipeds has short, fine stripes on the dorsal surface.
The walking legs have three horn-like spines and tufts of setae on the flexor margin of each dactylus, carpus, and merus without spines on the margins.
The propodia and dactyli of the walking legs are red, with the propodia each having two or three white bands.
The carapace reaches a size of just under 1 cm.
The porcelain crab likes to stay under stones, where it stirs up sediment and filters out organic particles with the help of its elongated hairs on its mouthparts.
In living animals, the carapace and chelipeds are dark brown or greenish-brown.
Synonyms:
Petrolisthes nipponensis Miyake, 1937 · unaccepted > junior subjective synonym
Porcellana barbata Heller, 1862 · unaccepted > junior subjective synonym
Porcellana coccinea Owen, 1839 · unaccepted > superseded combination
