| Romaleon | |
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| California rock crab, Romaleon antennarium | |
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| Romaleon jordani female | |
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| Genus: | Romaleon Gistl, 1848 |
| Type species | |
| Romaleon gibbosulus [1] Rathbun, 1898 | |
Romaleon is a genus of marine crabs formerly considered in the genus Cancer . [1]
The genus, as currently circumscribed, contains seven species: [2]
Mary Jane Rathbun was an American zoologist who specialized in crustaceans. She worked at the Smithsonian Institution, often unaided, from 1884 until her death. She described more than a thousand new species and subspecies and many higher taxa.
Chionoecetes is a genus of crabs that live in the northern Pacific and Atlantic Oceans.
Xanthidae is a family of crabs known as gorilla crabs, mud crabs, pebble crabs or rubble crabs. Xanthid crabs are often brightly coloured and are highly poisonous, containing toxins which are not destroyed by cooking and for which no antidote is known. The toxins are similar to the tetrodotoxin and saxitoxin produced by puffer fish, and may be produced by bacteria in the genus Vibrio living in symbiosis with the crabs, mostly V. alginolyticus and V. parahaemolyticus.
Pinnotheres is a genus of crabs, including the pea crab. Many species formerly in Pinnotheres have been placed in new genera, such as Zaops ostreus, the oyster crab and Nepinnotheres novaezelandiae, the New Zealand pea crab. The species currently recognised in the genus Pinnotheres are:
Cancer is a genus of marine crabs in the family Cancridae. It includes eight extant species and three extinct species, including familiar crabs of the littoral zone, such as the European edible crab, the Jonah crab and the red rock crab. It is thought to have evolved from related genera in the Pacific Ocean in the Miocene.
Calappa is a genus of crabs known commonly as box crabs or shame-faced crabs. The name box crab comes from their distinctly bulky carapace, and the name shame-faced is from anthropomorphising the way the crab's chelae (claws) fold up and cover its face, as if it were hiding its face in shame.
Macrophthalmus is a genus of crabs which are widespread across the Indo-Pacific. It contains the following species :
Sesarma is a genus of terrestrial crabs endemic to the Americas.
Pugettia is a genus of kelp crabs, in the family Epialtidae. It comprises the following species:
Leucosiidae is a family of crabs containing three subfamilies and a number of genera incertae sedis:
Palapedia is a genus of crabs in the family Xanthidae, containing the following species:
Liomera is a genus of crabs in the family Xanthidae, containing the following species:
Neoliomera is a genus of crabs in the family Xanthidae, containing the following species:
Cyrtocarcinus truncatus is a species of crab in the family Xanthidae that lives in the waters around Hawaii. It was described in 1906 by Mary J. Rathbun as Harrovia truncata, based on a single immature male specimen caught near Kauai. Masatsune Takeda transferred the species to his new genus Glyptocarcinus in 1979, and Peter Ng and Diana Chia erected a new genus, Cyrtocarcinus, for this species alone, in 1994.
Jacforus cavatus is a species of crab in the monotypic genus Jacforus in the family Xanthidae.
Marratha angusta is a species of crabs in the family Xanthidae, the only species in the genus Marratha. It was originally described as Cycloxanthops angustus by Mary J. Rathbun in 1906, but was moved to a new genus in 2003; the name of the genus, Marratha, is an "arbitrary abbreviation" of Rathbun's name. It has been recorded from the Amirante Islands (Seychelles), Hawaii and the South China Sea.
Nanocassiope is a genus of crabs in the family Xanthidae, containing the following species:
Xanthias is a genus of crabs in the family Xanthidae, containing two exclusively fossil species and the following extant species:
Banareia is a genus of crabs in the family Xanthidae, containing the following species:
Hyastenus is a genus of crabs in the family Epialtidae, subfamily Pisinae, containing the following extant species:
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