| Persephona mediterranea | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Brachyura |
| Family: | Leucosiidae |
| Genus: | Persephona |
| Species: | P. mediterranea |
| Binomial name | |
| Persephona mediterranea (J. F. W. Herbst, 1794) | |
Persephona mediterranea, the mottled purse crab, is a species of true crab in the family Leucosiidae. [1] [2] It is found in the western Atlantic Ocean. [2]
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting tail-like abdomen, usually hidden entirely under the thorax. They live in all the world's oceans, in freshwater, and on land. They are generally covered with a thick exoskeleton. They generally have five pairs of legs, and they have pincer claws on the ends of the frontmost pair. They first appeared during the Jurassic period, around 200 million years ago.
The Decapoda or decapods are an order of crustaceans within the class Malacostraca, and includes crabs, lobsters, crayfish, shrimp, and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 extant species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp and Anomura including hermit crabs, porcelain crabs, squat lobsters making up the bulk of the remainder. The earliest fossils of the group date to the Devonian.
The Caribbean hermit crab, also known as the soldier crab, West Atlantic crab, tree crab, or purple pincher, is a species of land hermit crab native to the west Atlantic, Belize, southern Florida, Venezuela, and the West Indies.
King crabs are decapod crustaceans of the family Lithodidae that are chiefly found in deep waters and are adapted to cold environments. They are composed of two subfamilies: Lithodinae, which tend to inhabit deep waters, are globally distributed, and comprise the majority of the family's species diversity; and Hapalogastrinae, which are endemic to the North Pacific and inhabit exclusively shallow waters. King crabs superficially resemble true crabs but are generally understood to be closest to the pagurid hermit crabs. This placement of king crabs among the hermit crabs is supported by several anatomical peculiarities which are present only in king crabs and hermit crabs, making them a prominent example of carcinisation among decapods. Several species of king crabs, especially in Alaskan and southern South American waters, are targeted by commercial fisheries and have been subject to overfishing.
Anomura is a group of decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word crab, all true crabs are in the sister group to the Anomura, the Brachyura.
The hairy stone crab is a crab-like anomuran crustacean that lives in the littoral zone of southern Australia from Bunbury, Western Australia, to the Bass Strait. It is the only species in the family Lomisidae. It is 1.5–2.5 cm (0.6–1.0 in) wide, slow-moving, and covered in brown hair which camouflages it against the rocks upon which it lives.
Oziotelphusa gallicola is a species of crab in the family Gecarcinucidae.
Pagurus ikedai is a species of right-handed hermit crab in the family Paguridae.
Crustaceans are invertebrate animals that constitute one group of arthropods that are a part of the subphylum Crustacea, a large, diverse group of mainly aquatic arthropods including decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, opossum shrimps, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed pan-group referred to as Pancrustacea. The three classes Cephalocarida, Branchiopoda and Remipedia are more closely related to the hexapods than they are to any of the other crustaceans.
Persephona is a genus of true crabs in the family Leucosiidae. There are about 5 described species in Persephona.
Loxorhynchus crispatus, known generally as the masking crab or moss crab, is a species of true crab in the family Epialtidae. It is found in the East Pacific.
Taliepus nuttallii, known generally as the southern kelp crab or globose kelp crab, is a species of true crab in the family Epialtidae. It is found in the East Pacific.
Taliepus is a genus of kelp and spider crabs in the family Epialtidae. There are at least three described species in the genus Taliepus.
Randallia ornata, known generally as the globose sand crab or purple globe crab, is a species of true crab in the family Leucosiidae. It is found in the East Pacific.
Pagurus annulipes, the brown banded hermit, is a species of hermit crab in the family Paguridae. It is found in the western Atlantic Ocean. It is the only hermit crab with banded legs on the coast of the NE United States.
Armases is a genus of true crabs in the family Sesarmidae. There are about 13 described species in Armases.
Polyonyx gibbesi, the eastern tube crab, is a species of porcelain crab in the family Porcellanidae. It is found in the western Atlantic Ocean.
Arenaeus is a genus of swimming crabs in the family Portunidae. There are at least two described species in Arenaeus.
Emerita talpoida, known generally as the Atlantic mole crab or Atlantic sand crab, is a species of mole crab in the family Hippidae. It is found in the western Atlantic Ocean and Mexico along the shoreline.
Dissodactylus mellitae, the sand-dollar pea crab, is a species of pea crab in the family Pinnotheridae. It is found in the western Atlantic Ocean.
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