Asellota is a suborder of
isopod
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, an ...
crustacean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...
s found in marine and
freshwater
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...
environments.
Roughly one-quarter of all
marine isopods belong to this suborder.
Members of this suborder are readily distinguished from other isopods by their complex copulatory apparatus. Other characteristics include six-jointed antennal peduncle, the styliform
uropod
Uropods are posterior appendages found on a wide variety of crustaceans. They typically have functions in locomotion.
Definition
Uropods are often defined as the appendages of the last body segment of a crustacean. An alternative definition sugge ...
s (a character shared with some other isopod groups), the fusion of pleonites 5, 4 and sometimes 3 to the pleotelson, and absence of the first
pleopod
The decapod ( crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various ...
in females.
Classification
The suborder Asellota comprises these families:
Some classifications also include the
Microcerberidea
The Microcerberidea are a suborder of isopod crustaceans. They are less than long, and live interstitially. They may be found in the eastern Pacific Ocean, and around the coasts of South America, Africa, the Mediterranean Sea, and India
...
within Asellota.
*
Acanthaspidiidae
Acanthaspidiidae is a family of crustaceans belonging to the order Isopoda.
Genera:
* '' Ianthopsis'' Beddard, 1886
* ''Iolanthe
''Iolanthe; or, The Peer and the Peri'' () is a comic opera with music by Arthur Sullivan and libretto by W. ...
Menzies, 1962
*
Dendrotiidae Vanhöffen, 1914
*
Desmosomatidae
Desmosomatidae is a family of isopods belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeletons, ...
Sars, 1899
*
Echinothambematidae Menzies, 1956
*
Haplomunnidae
Haplomunnidae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeleton ...
Wilson, 1976
*
Haploniscidae
Haploniscidae is a family of isopods belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeletons, ...
Hansen, 1916
*
Ischnomesidae
Ischnomesidae is a family of isopods belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeletons, ...
Hansen, 1916
*
Janirellidae
Janirellidae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeleton ...
Menzies, 1956
*
Janiridae
Janiridae is a family of isopods in the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeletons, two pairs of ...
Sars, 1897
*
Joeropsis Koehler, 1885[http://www.marinespecies.org/aphia.php?p=taxdetails&id=118369 WoRMS]
*
Joeropsididae
Joeropsididae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeleto ...
Nordenstam, 1933
*
Katianiridae
Katianiridae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeleton ...
Svavarsson, 1987
*
Macrostylidae
Macrostylidae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeleto ...
Hansen, 1916
*
Mesosignidae Schultz, 1969
*
Microparasellidae
Microparasellidae is a family of crustaceans belonging to the order Isopoda.
Genera:
* ''Angeliera'' Chappuis & Delamare-Deboutteville, 1952
* ''Microparasellus'' Karaman, 1933
References
Isopod families
{{isopod-stub ...
Karaman, 1933
*
Mictosomatidae Wolff, 1965
*
Munnidae Sars, 1897
*
Munnopsidae Lilljeborg, 1864
*
Nannoniscidae
Nannoniscidae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeleto ...
Hansen, 1916
*
Paramunnidae Vanhöffen, 1914
*
Pleurocopidae
''Pleurocope'' is a genus of crustaceans belonging to the monotypic family Pleurocopidae.
The species of this genus are found in Central America.
Species:
*''Pleurocope dasyura''
*''Pleurocope floridensis''
*''Pleurocope iriomotensis''
*''P ...
Fresi & Schiecke, 1972
*
Santiidae Wilson, 1987
*
Thambematidae Stebbing, 1913
Aselloidea Latreille, 1802
*
Asellidae
The Asellidae are a family of isopod crustaceans, one of the largest families of freshwater isopods, living in both epigean and hypogean habitats in North America and Europe. The family includes these genera:
*'' Asellus'' Geoffroy, 1762
*'' Bai ...
Latreille, 1802
*
Stenasellidae Dudich, 1924
Stenetrioidea Hansen, 1905
*
Pseudojaniridae
Pseudojaniridae is a family of crustaceans belonging to the order Isopoda
Isopoda is an order of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskele ...
Wilson, 1986
*
Stenetriidae Hansen, 1905
Gnathostenetroidoidea Kussakin, 1967
*
Gnathostenetroididae Kussakin, 1967
*
Protojaniridae Fresi, Idato & Scipione, 1980
*
Vermectiadidae
''Vermectias'' is a genus of crustaceans belonging to the monotypic family Vermectiadidae.
Species:
*''Vermectias caudiculata''
*''Vermectias nelladanae''
References
Isopod genera
{{isopod-stub ...
Just & Poore, 1992
References
External links
*
Isopoda
{{isopod-stub