Macrophthalmus is a genus of crabs which are widespread across the Indo-Pacific. It contains the following species :
Callinectes marginatus, commonly known as the sharptooth swimcrab or marbled swimcrab, is a species of swimming crab in the family Portunidae.
Chaceon fenneri, commonly known as the golden crab or golden deepsea crab, is one of several species of crab harvested for food by humans. It was formerly called Geryon fenneri. Like the blue crab, its common name comes from the color of its shell; it is usually cream to tan in color. Both parts of the binomen Chaceon fenneri commemorate Fenner A. Chace Jr. It is found on the ocean floor at depths of 200 to 1,500 m (660–4,920 ft) in the tropical west Atlantic, ranging from the Gulf of Mexico to Brazil. It cannot swim. The carapace of this large crab measures up to 20 cm (7.9 in), making the entire animal similar in size to a dinner plate. Its diet includes benthic (bottom-dwelling) organisms like mollusks and worms.
Herbstia is a genus of crabs, containing the following eleven species:
The Aethridae are a family of crabs in their own superfamily, Aethroidea. It contains these genera :
Hexapodidae is a family of crabs, the only family in the superfamily Hexapodoidea. It has traditionally been treated as a subfamily of the family Goneplacidae, and was originally described as a subfamily of Pinnotheridae. Its members can be distinguished from all other true crabs by the reduction of the thorax, such that only seven sternites are exposed, and only four pairs of pereiopods are present. Not counting the enlarged pair of claws, this leaves only six walking legs, from which the type genus Hexapus, and therefore the whole family, takes its name. Some anomuran "crabs", such as porcelain crabs and king crabs also have only four visible pairs of legs. With the exception of Stevea williamsi, from Mexico, all the extant members are found either in the Indo-Pacific oceans, or around the coast of Africa.
Inachidae is a family of crabs, containing 39 genera:
Macropodia is a genus of crabs, belonging to the family Inachidae. It contains the following species:
Epialtinae is a subfamily of crabs, containing the following genera:
Acanthonyx is a genus of crabs, in the family Epialtidae. Species so far known include:
Sakalia is a genus of crabs in the family Aethridae, and was first described in 1981 by Raymond Manning and Lipke Holthuis.
Karstarma is a genus of karst-dwelling crabs formerly included in Sesarmoides.
Inachus phalangium, Leach's spider crab, is a species of crabs from the north-eastern Atlantic Ocean and Mediterranean Sea. It is up to 20.5 mm (0.81 in) wide, and is very similar to other species in the genus Inachus.
Around 65 species of crab occur in the waters of the British Isles. All are marine, with the exception of the introduced Chinese mitten crab, Eriocheir sinensis, which occurs in fresh and brackish water. They range in size from the deep-water species Paromola cuvieri, which can reach a claw span of 1.2 metres, to the pea crab, which is only 4 mm (0.16 in) wide and lives inside mussel shells.
Achaeus is a genus of crabs comprising the following species:
Heikeopsis is a genus of crabs containing two species, Heikeopsis japonica and Heikeopsis arachnoides. The genus was originally described under the name "Heikea" by Lipke Holthuis and Raymond B. Manning in 1990, but was later determined to be a junior homonym of the gastropod genus Heikea, erected by Orvar Isberg in 1934.
Dorippidae is a small family of crabs, containing the following genera :
Geryonidae is a family of crabs, including the following genera and species:
The Camptandriidae are a family of crabs, with 38 species in 21 genera:
Chaceon is a crab genus in the family Geryonidae, and was first described in 1989 by Raymond Manning and Lipke Holthuis.
