Pagurus | |
---|---|
Black-eyed hermit crab, Pagurus armatus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Malacostraca |
Order: | Decapoda |
Suborder: | Pleocyemata |
Infraorder: | Anomura |
Family: | Paguridae |
Genus: | Pagurus Fabricius, 1775 [1] |
Type species | |
Cancer bernhardus |
Pagurus is a genus of hermit crabs in the family Paguridae. Like other hermit crabs, their abdomen is not calcified and they use snail shells as protection. These marine decapod crustaceans are omnivorous, but mostly prey on small animals and scavenge carrion. Trigonocheirus and Pagurixus used to be considered subgenera of Pagurus, but the former is nowadays included in Orthopagurus , while the latter has been separated as a distinct genus. [3]
Some 170 species are presently placed in Pagurus; many others have been placed here at one time but are now assigned to other genera of Paguroidea. The following list is current as of June 2012 [update] : [3]
The following are all nomina nuda . They have never been validly described as new species, but only mentioned under these names: [3]
King crabs are a taxon of decapod crustaceans that are chiefly found in cold seas. Because of their large size and the taste of their meat, many species are widely caught and sold as food with the most common being the red king crab.
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.
Clibanarius is a genus of hermit crabs in the family Diogenidae. Like other hermit crabs, their abdomen is soft-shelled and sheltered in a gastropod shell. Typically marine like all their relatives, the genus includes C. fonticola, the only known hermit crab species that spends all its life in freshwater. The feeding rates of Clibanarius species change with temperature which, given their broad distributions, may have considerable consequences for the stability reef systems as sea temperatures rise in the future.
The Diogenidae are a family of hermit crabs, sometimes known as "left-handed hermit crabs" because in contrast to most other hermit crabs, its left chela (claw) is enlarged instead of the right. It comprises 429 extant species, and a further 46 extinct species, making it the second-largest family of marine hermit crabs, after the Paguridae.
Coenobita cavipes is a species of land hermit crab native to the eastern parts of Africa, the Indonesia, Philippines, China, Japan, Malaysia, Taiwan, Polynesia, and Micronesia. While these hermit crabs are terrestrial, they prefer to reside near the shores for access of both water and land.
The Paguridae are a family of hermit crabs of the order Decapoda. The king crabs, Lithodoidea, are now widely understood to be derived from deep within the Paguridae, with some authors placing their ancestors within the genus Pagurus.
Calcinus is a genus of hermit crabs in the family Diogenidae, containing the following species:
Paguristes is a genus of hermit crab in the family Diogenidae. It includes the following species :
Dardanus is a genus of hermit crabs belonging to the Diogenidae family.
Hapalogastridae is a family of decapod crustaceans, belonging to king crabs in the broadest sense, containing the following species:
Munida is the largest genus of squat lobsters in the family Munididae, with over 240 species.
Diogenes is a genus of hermit crabs.
Uroptychus is a genus of squat lobsters in the family Chirostylidae found across the Indo-Pacific. The genus Uroptychus contains the following species:
The Galatheoidea are a superfamily of decapod crustaceans comprising the porcelain crabs and some squat lobsters. Squat lobsters within the three families of the superfamily Chirostyloidea are not closely related to the squat lobsters within the Galatheoidea. The fossil record of the superfamily extends back to the Middle Jurassic genus Palaeomunidopsis.
Leucosiidae is a family of crabs containing three subfamilies and a number of genera incertae sedis:
Pisinae is a subfamily of crabs in the family Epialtidae, comprising the following genera:
Cancellus is a genus of hermit crabs in the family Diogenidae. Members of this genus are most commonly found living in small crevices in the outer continental shelf at mesophotic depths. They can be found living in rocks, sponges, and algae among other places. The genus has a cosmopolitan distribution. Four species are known from the western Atlantic.
Pylopaguropsis is a genus of hermit crabs containing the following species:
Pachycheles is a genus of porcelain crabs in the family Porcellanidae. There are more than 40 described species in Pachycheles.
Pseudopaguristes is a genus of hermit crabs in the family Diogenidae.