Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from 1 to 340 millimetres and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 species live in fresh water, and the order also includes the terrestrial sandhoppers such as Talitrus saltator.
Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a traditional classification, it encompassed about 7,275 (92%) of the 7,900 species of amphipods described by then, in approximately 1,000 genera, divided among around 125 families. That concept of Gammaridea included almost all freshwater amphipods, while most of the members still were marine.
Odiidae is a family of amphipods, sometimes included in the family Ochlesidae. It includes the following genera:
Corophiida is an infraorder of amphipods that contains the two parvorders Caprellidira and Corophiidira.
Melphidippidae is a family of amphipods which rest upside-down and feed on particles of food suspended in the water. Three genera are recognised:
Lysianassidae is a family of marine amphipods, containing the following genera:
Paracalliopiidae is a family of amphipods, containing the following genera:
Cyproideidae is a family of amphipod crustaceans. Eighteen genera and 43 species have been described as of 2009. They mostly occur mostly in the Southern Hemisphere, where they form associations with corals, sponges, crinoids and hydroids.
Pontogeneiidae is a family of amphipod crustaceans, containing the following genera:
Caprelloidea is a superfamily of marine crustaceans in the order Amphipoda. It includes "untypical" forms of amphipods, such as the skeleton shrimps (Caprellidae) and whale lice (Cyamidae). The group was formerly treated as one of the four amphipod suborders, Caprellidea, but has been moved down to the superfamily rank by Myers & Lowry after phylogenetic studies of the group, and is now contained in the infraorder Corophiida of the suborder Senticaudata. The group includes the following families.
Brandtia is a monotypic genus of amphipod in the Acanthogammaridae family, containing the species Brandtia latissima. Like other members of the family, it is endemic to Lake Baikal. This omnivore is found at depths of 1–65 m (3–213 ft) among stones. It is up to 1.9 cm (0.75 in) long.
Cochinorchestia is a genus of amphipod belonging to the family Talitridae.
Eurythenes is a genus of marine amphipods in the family Eurytheneidae.
Eurythenes thurstoni is a species of amphipod of the genus Eurythenes. It was first described in 2004 and named after Mike Thurston, a marine biologist specialising in deep-sea amphipods.
Amaryllis is a genus of amphipods belonging to the family Amaryllididae. The genus was first described in 1879 by William Aitcheson Haswell, and the type species is Amaryllis macrophthalma Haswell, 1879.
Parawaldeckia is a genus of amphipod crustacean in the family, Lysianassidae. and was first described by Thomas Roscoe Rede Stebbing in 1910. The type species is Parawaldeckia thomsoni.
Bellorchestia marmorata is a marine amphipod in the Talitridae family.
James Kenneth Lowry is a zoologist specialising in amphipods.
Lauren Elizabeth Hughes is an Australian carcinologist and curator. She specialises in the study of amphipods.
Amaryllis carrascoi is a species of crustacean in the family Amaryllididae, and was first described in 2002 by James K. Lowry and Helen E. Stoddart.
