等足目
多樣化及分類

等足目屬於囊蝦總目，有特製的育幼袋孵蛋。根據2001年的分類，當時約有11437個物種，分別分類在11個亞目。
Acanthaspidiidae
Ianthopsis Beddard, 1886
Iolanthe Beddard, 1886
Mexicope Hooker, 1985
Mexicope kensleyi Hooker, 1985
Mexicope maletensis Riehl & Schienbein, 2024
Mexicope sushara Bruce, 2004
Mexicope westralia Just, 2001
纺锤水虱科 Aegidae
Agnaridae
Alloniscidae
Amphisopidae
Amphisopodidae
Ancinidae
Antarcturidae
Abyssarcturus Kussakin & Vasina, 1995
Acantharcturus Schultz, 1981
Antarcturus
Caecarcturus Schultz, 1981
Chaetarcturus Brandt, 1990
Cylindrarcturus Schultz, 1981
Fissarcturus Bathyweddellensis, 2007
Fissarcturus Brandt, 1990
Fissarcturus Rossi, 2007
Fissarcturus Sandwichi, 2007
Furcarcturus Baltzer, Held & Wägele, 2000
Glaberarcturus Kussakin & Vasina, 1998
Globarcturus Kussakin & Vasina, 1994
Halearcturus Poore, 2015
Litarcturus Brandt, 1990
Marmachius Poore, 2012
Mixarcturus Brandt, 1990
Oxyarcturus Brandt, 1990
Tuberarcturus Brandt, 1990
Xiphoarcturus Pereira, Roccatagliata & Doti, 2019
背尾水虱科 Antheluridae
Anthuridae
Anuropidae
Archaeoniscidae
Archeoniscidae
Arcturidae
Arcturididae
Armadillidae
球木虱科 Armadillidiidae
Armadilliidae
Asconiscidae
栉水虱科 Asellidae
Atlantasellidae
Atlantidiidae
澳洲水虱科 Austrarcturellidae
Balloniscidae
Barybrotidae
Basserolidae
异深水虱科 Bathynataliidae
Bathynomidae
Bathytropidae
Berytoniscidae
Bisilvestriidae
鳃虱科 Bopyridae
Brasileirinidae
Buddelundiellidae
Cabiropidae
大尾水虱科 Calabozoidae
Capitoniscidae
Chaetilidae
Chaetiliidae
漂水虱科 Cirolanidae
珊瑚水虱科 Corallanidae
Crinoniscidae
Cryptoniscidae
Cryptothiridae
Cumoechidae
Cylisticidae
缩头鱼虱科 Cymothoidae
Cyproniscidae
Dajidae
Delatorreiidae
Dendrotionidae
Desmosomatidae
Detonidae
Dubioniscidae
Echinothambematidae
内虱科 Entoniscidae
Entophilidae
Eubelidae
Excorallanidae ，为Corallanidae的异名
Expanathuridae
Gnathidae
巨颚水虱科 Gnathiidae
Gnathostenetroididae
Hadromastacidae
Halophilosciidae
Haplomunnidae
Haploniscidae
Hekelidae
Hemioniscidae
Holidoteidae
Holognathidae
Hypsimetopidae
Hyssuridae
Idoteidae
Ionidae
Irmaosidae
Ischnomesidae
寄藻水虱科 Janirellidae
Janiridae
Joeropsididae
Katianiridae
Keuphyliidae
Lantoceramiidae
Lepidocharontidae
Leptanthuridae
海蟑螂科 Ligiidae
Limnoriidae
Macrostylidae
Mesamphisopidae
Mesoniscidae
Mesosignidae
小角水虱科 Microcerberidae
Microniscidae
Microparasellidae
Mictosomatidae
浮游水虱科 Munnidae
Munnopsidae
Nannoniscidae
Olibrinidae
海蛆科 Oniscidae
Diacara Budde-Lund, 1908
Exalloniscus Stebbing, 1911
Exalloniscus albus (Dollfus, 1898)
Exalloniscus beroni Taiti & Ferrara, 1988
Exalloniscus bicoloratus Taiti & Ferrara, 1988
Exalloniscus borneanus Taiti & Ferrara, 1988
Exalloniscus brincki Manicastri & Argano, 1986
Exalloniscus burmaensis Taiti & Cardoso, 2020
Exalloniscus caudatus Taiti & Ferrara, 1988
Exalloniscus coecus (Dollfus, 1898)
Exalloniscus convexus Taiti & Cardoso, 2020
Exalloniscus cortii Arcangeli, 1927
Exalloniscus curvispinatus Li & Jiang, 2024
Exalloniscus deharvengi Taiti & Cardoso, 2020
Exalloniscus duospinatus Li & Jiang, 2024
Exalloniscus japonicus Taiti & Gruber, 2008
Exalloniscus kampucheaensis Taiti & Cardoso, 2020
Exalloniscus malaccensis Taiti & Ferrara, 1988
Exalloniscus maschwitzi Taiti & Ferrara, 1988
Exalloniscus nepalensis Schmalfuss, 1983
Exalloniscus papillosus (Budde-Lund, 1912)
Exalloniscus rotundatus Taiti & Ferrara, 1986
Exalloniscus schmalfussi Taiti & Cardoso, 2020
Exalloniscus siamensis Taiti & Cardoso, 2020
Exalloniscus silvestrii Kwon & Taiti, 1993
Exalloniscus stilifer Taiti & Cardoso, 2020
Exalloniscus sumatranus Manicastri & Taiti, 1991
Exalloniscus taitii Li & Jiang, 2024
Exalloniscus thailandensis Dalens, 1987
Exalloniscus tortilis Taiti & Cardoso, 2020
Exalloniscus triangulus Li & Jiang, 2024
Exalloniscus tridentatus Li & Jiang, 2024
Exalloniscus troglophilus Taiti & Gruber, 2008
Exalloniscus tuberculatus Nunomura, 2000
Exalloniscus vietnamensis Taiti & Ferrara, 1988
Hanoniscus Budde-Lund, 1912
Hiatoniscus Barnard, 1932
Hora Barnard, 1932
Krantzia Barnard, 1932
海蛆属 Oniscus Linnaeus, 1758
Oroniscus Verhoeff, 1908
Phalloniscus Budde-Lund, 1908
Rabdoniscus Vandel, 1981
Rodoniscus Arcangeli, 1934
Sardoniscus Arcangeli, 1939
Tasmanoniscus Vandel, 1973
Palaeophreatoicidae
Paramunnidae
Paranthuridae
Paraplatyarthridae
Parasellidae
Periscyphicidae
Philosciidae
Phoratopodidae
坑水虱科 Phreatoicidae
Phreatoicopsidae
Phreatoicopsididae
Plakarthriidae
蚁虱科 Platyarthridae
Pleurocopidae
Podasconidae
Ponderellidae
鼠妇科 Porcellionidae
Protognathiidae
Protojaniridae
Pseudarmadillidae
Pseudidotheidae
Pseudojaniridae
Pudeoniscidae
Rectarcturidae
Rhyscotidae
Santiidae
Schoebliidae
Schweglerellidae
Scleropactidae
Scyphacidae
扁水虱科 Serolidae
Spelaeoniscidae
团水虱科 Sphaeromatidae
Sphaeroniscidae
Stellatoniscidae
Stenasellidae
Stenetriidae
Stenoniscidae
Styloniscidae
Tainisopidae
Tecticipitidae
Tendosphaeridae
Thambematidae
Thermoarcturidae
Titanidae
Trachelipodidae
Tricarinidae
毛潮虫科 Trichoniscidae
Tridentellidae
Turanoniscidae
瘤水虱科 Tylidae
Urdidae
Urstylidae
Vermectiadidae
Xenarcturidae
Xenosellidae
Anhelkocephalon Bill, 1914
Arctasellus Henry & Magniez, 1995
Austrorgathona
Brunnella Polz, 2005
Chimaeroniscus Williams, Boyko & Moritaki, 2022
Congloboniscus Jackson, 1938
Crenisopus Wilson & Keable, 1999
Cryptocotitus Schultz, 1977
Cryptolacruma Schädel, Hörnig, Hyžný & Haug, 2021
Cylisticoides Schmalfuss, 2003
Debodea Hiller, 1999
Discosalaputium Schädel, van Eldijk, Winkelhorst, Reumer & Haug, 2020
Electrolana Schädel, Hyžný & Haug, 2021
Elocryptus Schultz, 1977
Ennurensis Collinge, 1915
Eoarmadillidium Dollfus, 1904
Eobooralana Schädel, Nagler & Hyžný, 2023
Gelrincola Schädel, van Eldijk, Winkelhorst, Reumer & Haug, 2020
Helleria Czerniavsky, 1868
Jaerella Richardson, 1911
Kanthyloma Klompmaker, Artal, van Bakel, Fraaije & Jagt, 2014
Leptaspidia Bate & Westwood, 1868
Mauritaniscus Vandel, 1958
Musconiscus Arcangeli, 1930
Nalocryptus Schultz, 1977
Nococryptus Schultz, 1977
Olincera W.E.Leach
Oniscomorphus Jackson, 1938
Onocryptus Schultz, 1977
Osicryptus Schultz, 1977
Ourachaerus Kinahan, 1859
Paraleptotrichus Arcangeli, 1927
Philoscodillo Jackson, 1938
Platuropodus Pazinato, Haug, Rohn, Adami-Rodrigues, Pirani Ghilardi, Cardoso Langer & Haug, 2021
Platyburmoniscus Schmidt, 2000
Potrerillo de Armas & Juarrero de Varona, 1999
Pseudodiploexochus Taiti, Paoli & Ferrara, 1998
Reboursia Guinot, Wilson & Schram, 2005
Rhacura Richardson, 1908
Rotungus Collinge, 1916
Squilloides Tchindono & Tchesun, 1993
Strigoproavus Schollmann, 1993
Synuropus Richardson, 1901
Thermaloniscus Bourdon, 1983
Tole Ortmann, 1901
Trichopleon Beddard, 1886
Trisopodoniscus Bourdon, 1981
Unusuropode Duarte & Santos, 1962
Urias Richardson, 1911
Vacuotheca Schädel, Perrichot & Haug, 2019
Xostylus Menzies, 1962