{{Short description|Genus of crustaceans}} {{other uses}} {{Automatic taxobox | image = Asellus aquaticus.jpg | image_caption = ''Asellus aquaticus'' | taxon = Asellus | authority = Geoffroy, 1762 | type_species = ''Oniscus aquaticus'' | type_species_authority = Linnaeus, 1758 }}
'''''Asellus''''' is a genus of isopod crustaceans in the family Asellidae.<ref name=WoRMS/> '''Asellus''' isopods are commonly called waterlouse, waterslaters, Eurasian waterslaters, and more.<ref>{{Cite web |date=2026-04-25 |title=Asellus (Eurasian Waterslaters): Identification, Facts, and Taxonomy |url=https://bugswithmike.com/guide/arthropoda/crustacea/malacostraca/peracarida/isopoda/asellota/aselloidea/asellidae/asellus |access-date=2026-05-18 |website=Bugs With Mike |language=en}}</ref> They are found in canals, lakes, ponds, and other slow-moving water enviornments.
==Species== ''Asellus'' is divided into three subgenera which contain the following species:<ref name=WoRMS>{{WoRMS |title=''Asellus'' Geoffroy, 1762 |db=Isopod |id=148666 |access-date=20 August 2023}}</ref>{{#tag:ref|A binomial authority in parentheses indicates that the species was originally described in a genus other than ''Asellus''.|group=lower-alpha}}
===''Asellus (Asellus)'' <small>Geoffroy, 1762</small>=== * ''Asellus amamiensis'' <small>Matsumoto, 1961</small> * ''Asellus aquaticus'' <small>(Linnaeus, 1758)</small> * ''Asellus balcanicus'' <small>Karaman, 1952</small> * ''Asellus epimeralis'' <small>Birstein, 1947</small> * ''Asellus ezoensis'' <small>Matsumoto, 1962</small> * ''Asellus hyugaensis'' <small>Matsumoto, 1960</small> * ''Asellus ismailsezarii'' <small>Malek-Hosseini, Jugovic, Fatemi & Douady, 2022</small><ref>{{cite journal |last1=Malek-Hosseini |first1=Mohammad Javad |last2=Jugovic |first2=Jure |last3=Fatemi |first3=Yaser |last4=Kuntner |first4=Matjaž |last5=Kostanjšek |first5=Rok |last6=Douady |first6=Christophe J. |last7=Malard |first7=Florian |title=A new obligate groundwater species of ''Asellus'' (Isopoda, Asellidae) from Iran |journal= Subterranean Biology |volume=42 |pages=97–124 |doi=10.3897/subtbiol.42.79447 |url=http://dx.doi.org/10.3897/subtbiol.42.79447|doi-access=free }}</ref> * ''Asellus kosswigi'' <small>Verovnik, Prevorcnik & Jugovic, 2009</small> * ''Asellus kumaensis'' <small>Matsumoto, 1960</small> * ''Asellus levanidovorum'' <small>Henry & Magniez, 1995</small> * ''Asellus monticola'' <small>Birstein, 1932</small> * ''Asellus musashiensis'' <small>Matsumoto, 1961</small> * ''Asellus primoryensis'' <small>Henry & Magniez, 1993</small> * ''Asellus shikokuensis'' <small>Matsumoto, 1960</small> * ''Asellus tamaensis'' <small>Matsumoto, 1960</small> * ''Asellus turanaicus'' <small>Sidorov & Prevorčnik, 2016</small> * ''Asellus hilgendorfii'' <small>Bovallius, 1886</small>
===''Asellus (Arctasellus)'' <small>Henry & Magniez, 1995</small>=== * ''Asellus alaskensis'' <small>Bowman & Holmquist, 1975</small><ref>{{cite journal |last1=Bowman |first1=Thomas E. |last2=Holmquist |first2=C. |title=''Asellus (Asellus) alaskensis'', n. sp., the first Alaskan ''Asellus'', with remarks on its Asian affinities (Crustacea: Isopoda: Asellidae) |journal=Proceedings of the Biological Society of Washington |date=1975 |volume=88 |pages=59–72 |url=https://www.biodiversitylibrary.org/part/44170 }}</ref> * ''Asellus birsteini'' <small>Levanidov, 1976</small> * ''Asellus latifrons'' <small>Birstein, 1947</small>
===''Asellus (Mesoasellus)'' <small>Birstein, 1939</small>=== *''Asellus dybowskii'' <small>Semenkevich, 1924</small>
==Notes== {{notelist}}
==References== {{Reflist|refs=
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Category:Asellidae Category:Isopod genera Category:Taxa named by Étienne Louis Geoffroy
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