Sphaeromatidae is a family of isopods, often encountered on rocky shores and in shelf waters in temperate zones. The family includes almost 100 genera and 619 known marine species. Within these genera, there are groups that share distinctive morphologies; further research may reclassify these genus-groups as separate families.
Arubolana is a genus of crustacean in the family Cirolanidae, containing the following species:
Curassanthura is a genus of isopod crustaceans in the family Leptanthuridae. It contains the following species:
Mexilana saluposi is a species of crustacean in the family Cirolanidae, the only species in the genus Mexilana. It is endemic to Mexico.
Onchotelson is a genus of isopod crustaceans in the family Phreatoicidae, which is endemic to Tasmania. It contains two species, both of which are listed as vulnerable on the IUCN Red List:
Thermosphaeroma is a genus of crustacean in family Sphaeromatidae. They occur exclusively in hot springs of southwestern United States and central Mexico.
Nichollsia is a genus of isopod crustaceans from India. It comprises two species:
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. It can often be found hiding under rockweed in the intertidal zone, and can be found in depths up to 919 metres (3,015 ft). It was described as Idotea wosnesenskii in 1851, by Johann Friedrich von Brandt, and is named after the Russian biologist Ilya G. Voznesensky. The isopod grows up to 4 centimetres in length and is usually green in colour.
Iais is a genus of isopod crustaceans. Iais species are found in association with larger isopods of the family Sphaeromatidae, usually on the ventral surface of the larger animal, between the pereiopods and on the pleopods. They are native to Australasia and South America, although Iais californica and its host Sphaeroma quoyanum have invaded California, and I. californica was first described from Sausalito, California. Nine species are recognised:
The Cirolanidae are a family of isopod crustaceans, including these genera:
Remasellus parvus, the swimming Florida cave isopod, is an isopod endemic to 4 caves in the Ochlockonee and Aucilla-Suwanee drainages of Florida, United States. It is the only species in the genus Remasellus.
Paracerceis is a genus of isopod crustacean in the family Sphaeromatidae. It contains the following species:
Chiridotea is a genus of isopod crustaceans in the family Chaetiliidae, containing the following species:
Saduria is a genus of benthic isopod crustaceans in the family Chaetiliidae, containing the following species:
Dynoides is a genus of isopod crustaceans in the family Sphaeromatidae, containing the following species:
Dynoides elegans is a species of isopod crustacean in the genus Dynoides. It was originally described in 1923 by Pearl Lee Boone as "Cianella elegans" based on specimens from La Jolla and San Pedro, California. It was transferred to the genus Dynoides in 2000, when Boone's genus was sunk into synonymy with Dynoides.
Porcellio albinus is a species of woodlouse in the genus Porcellio belonging to the family Porcellionidae that can be found in North Africa.
Cirolana is a genus of isopod crustaceans.
Suarezia is a genus of woodlice, in the family Scleropactidae, containing the two species Suarezia differens and Suarezia heterodoxa, both of which are endemic to Madagascar.
Aega is a genus of isopods in the family Aegidae, containing the following species:
