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Isopoda is an order of crustaceans.Members of this group are called isopods and include both aquatic species and terrestrial species such as woodlice.All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, and five pairs of branching appendages on the abdomen that are used in respiration.
The IUCN Red List lists the Socorro isopod as extinct in the wild (EW). [13] This listing is likely out of date since the isopod was last assessed on August 1, 1996. Based on the five-year review from the USFWS the isopod is likely Vulnerable (VU). [3] It was the first crustacean ever listed on the endangered species list. [14]
Giant isopods are a good example of deep-sea gigantism (cf. giant squid), as they are far larger than the "typical" isopods that are up to 5 cm (2.0 in). Bathynomus can be divided into "giant" species where the adults generally are between 8 and 15 cm (3.1 and 5.9 in) long and "supergiant" species where the adults are typically between 17 and ...
Their name is derived from being often found in old wood, [2] and from louse, a parasitic insect, [3] although woodlice are neither parasitic nor insects. Woodlice evolved from marine isopods which are presumed to have colonised land in the Carboniferous, though the oldest known fossils are from the Cretaceous period. [4]
Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are a part of the subphylum Crustacea (/ k r ə ˈ s t eɪ ʃ ə /), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods, fish lice, krill, remipedes, isopods ...
Hemilepistus reaumuri is a species of woodlouse or isopod that lives in and around the deserts of North Africa and the Middle East, "the driest habitat conquered by any species of crustacean, not including insects which are now known to be crustaceans pancrustacea". [3]
Porcellio hoffmannseggii, commonly called the titan isopod, is a species of woodlouse of the genus Porcellio described in 1833. This very large species is native to the southern Iberian Peninsula , Morocco and the Balearic Islands.
Pentidotea wosnesenskii is a marine isopod which lives on seaweed on rocky shores along the British Columbia and Washington coastlines, as far south as San Francisco. [2] It can often be found hiding under rockweed (Fucus distichus) in the intertidal zone, and can be found in depths up to 919 metres (3,015 ft). [3]