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Superorder Peracarida - Marsupial Crustaceans

Phylum Arthropoda - Arthropods
Subphylum Crustacea - Crustaceans
Class Malacostraca - Malacostracans
Superorder Peracarida - Marsupial Crustaceans

Order Amphipoda - Amphipods
Suborder Senticaudata
Family Anisogammaridae
Family Bathyporeiidae
Genus Amphiporeia
Species virginiana - Amphiporeia virginiana
Family Calliopiidae
Genus Calliopius
Species laeviusculus - Calliopius laeviusculus
Family Caprellidae
Genus Aeginina
Species longicornis - Aeginina longicornis
Genus Caprella
Species californica - Caprella californica
Species mutica - Caprella mutica
Species verrucosa - Caprella verrucosa
Family Corophiidae
Genus Monocorophium
Species cylindricum - Monocorophium cylindricum
Family Crangonyctidae
Genus Stygobromus
Species pecki - Peck's Cave Amphipod
Species russelli - Stygobromus russelli
Genus Crangonyx
Species gracilis - Crangonyx gracilis
Species richmondensis - Crangonyx richmondensis
Family Gammaridae - Scuds
Genus Gammarus
Species fasciatus - Gammarus fasciatus
Species lacustris - Gammarus lacustris
Species locusta - Gammarus locusta
Species mucronatus - Gammarus mucronatus
Species pseudolimnaeus - Gammarus pseudolimnaeus
Species seideli - Gammarus seideli
Family Hadziidae
Genus Mexiweckelia
Species hardeni - Mexiweckelia hardeni
Family Hyalellidae
Genus Hyalella
Species wellborni - Hyalella wellborni
Species azteca - Hyalella azteca
Family Ischyroceridae
Genus Ericthonius
Species rubricornis - Ericthonius rubricornis
Genus Jassa
Species marmorata - Jassa marmorata
Family Talitridae - Beach Hoppers
Genus Americorchestia
Species longicornis - Americorchestia longicornis
Species megalophthalma - Americorchestia megalophthalma
Genus Arcitalitrus
Species sylvaticus - Lawn Shrimp
Genus Megalorchestia
Species californiana - California beach flea
Species corniculata - Megalorchestia corniculata
Genus Orchestia
Species grillus - Orchestia grillus
Genus Platorchestia
Species platensis - Platorchestia platensis
Genus Talitroides
Species alluaudi - Talitroides alluaudi
Genus Traskorchestia
Species traskiana - Traskorchestia traskiana
Genus Uhlorchestia
Species uhleri - Uhlorchestia uhleri
Family Unciolidae
Genus Unciola
Suborder Gammaridea
Family Haustoriidae
Genus Haustorius
Species canadensis - Haustorius canadensis
Suborder Hyperiidea
Family Phronimidae
Genus Phronima
Family Hyperiidae
Genus Hyperia
Order Isopoda - Isopods
Suborder Asellota - Asellotes
Superfamily Janiroidea
Family Janiridae
Genus Jaera
No Taxon albifrons complex
Species albifrons - Jaera albifrons
Genus Carpias
Species minutus - Carpias minutus
Superfamily Aselloidea - Waterslaters
Family Asellidae - Common Waterslaters
Genus Caecidotea
No Taxon forbesi group
Species racovitzai - Caecidotea racovitzai
Subspecies australis - Caecidotea racovitzai australis 0
Subspecies racovitzai - Caecidotea racovitzai racovitzai
Species communis - Caecidotea communis
No Taxon hobbsi group
Species kenki - Potamic Springslater
Species tomalensis - Caecidotea tomalensis
Genus Lirceolus
Genus Lirceus
Genus Asellus
No Taxon Asellus
No Taxon Arctasellus
Family Stenasellidae
Superfamily Stenetrioidea
Superfamily Gnathostenetroidoidea
Suborder Microcerberidea
No Taxon Scutocoxifera
Suborder Cymothoida - Predatory and Parasitic Isopods
Family Cirolanidae
Genus Bathynomus - Giant Isopods
Genus Cirolanides
Species texensis - Cirolanides texensis
Genus Cirolana
Genus Excirolana
Species chiltoni - Excirolana chiltoni
Infraorder Epicaridea - Crustacean-parasitic Isopods
Family Aegidae
Family Cymothoidae
Genus Anilocra
Species acuta - Anilocra acuta
Genus Elthusa
Species californica - Elthusa californica
Suborder Oniscidea - Woodlice
Infraorder Holoverticata
No Taxon Tylida
Family Tylidae
Genus Tylos
Species punctatus - Tylos punctatus
Species niveus - Tylos niveus
No Taxon Orthogonopoda
No Taxon Synocheta
Family Styloniscidae
Genus Cordioniscus
Species stebbingi - Cordioniscus stebbingi
Family Trichoniscidae
Genus Androniscus
Species dentiger - Androniscus dentiger
Genus Brackenridgia
Species heroldi - Brackenridgia heroldi
Genus Haplophthalmus
Species danicus - Spurred Ridgeback
Genus Hyloniscus
Species riparius - Hyloniscus riparius
Genus Miktoniscus
Species medcofi - Miktoniscus medcofi
Species spinosus - Miktoniscus spinosus 0
Genus Trichoniscus
Species pygmaeus - Trichoniscus pygmaeus
No Taxon Crinocheta
Family Alloniscidae
Genus Alloniscus
Species mirabilis - Alloniscus mirabilis
Species perconvexus - Alloniscus perconvexus
Family Armadillidae - Tropical and Southern Pillbugs
Genus Cubaris
Species benitensis - Cubaris benitensis
Species murina - Little Sea Pillbug
Genus Gabunillo - Gabunillo 0
Genus Venezillo
Species microphthalmus - Venezillo microphthalmus
Species arizonicus - Venezillo arizonicus
Species parvus - Venezillo parvus
Species pisum - Venezillo pisum 0
Family Armadillidiidae - European Pillbugs
Genus Armadillidium
Species nasatum - Nosy Pillbug
Species vulgare - Common Pillbug
Family Cylisticidae
Genus Cylisticus
Species convexus - Curly Woodlouse
Family Detonidae
Genus Detonella
Species papillicornis - Detonella papillicornis
Genus Armadilloniscus
Species coronacapitalis - Armadilloniscus coronacapitalis
Species holmesi - Armadilloniscus holmesi
Species lindahli - Armadilloniscus lindahli
Species ellipticus - Armadilloniscus ellipticus
Family Eubelidae
Genus Elumoides
Family Oniscidae - Sowbugs
Genus Oniscus
Species asellus - European Sowbug
Family Philosciidae
Genus Atlantoscia
Species floridana - Florida Fast Woodlouse
Genus Chaetophiloscia
Species sicula - Chaetophiloscia sicula
Genus Littorophiloscia
Species richardsonae - Littorophiloscia richardsonae
Species vittata - Littorophiloscia vittata
Genus Philoscia
Species muscorum - Philoscia muscorum
Family Platyarthridae
Genus Niambia
Species capensis - Niambia capensis
Genus Platyarthrus - Ant Woodlice
Species hoffmannseggii - Ant woodlouse
Species aiasensis - Platyarthrus aiasensis
Family Porcellionidae
Genus Acaeroplastes
Genus Porcellio
Species dilatatus - Giant Canyon Woodlouse
Species laevis - Swift Woodlouse
Species scaber - Common Rough Woodlouse
Species spinicornis - Brickwork Woodlouse
Genus Porcellionides
Species floria - Porcellionides floria
Species pruinosus - Plum Woodlouse
Species virgatus - Porcellionides virgatus
Genus Proporcellio
Species vulcanius - Proporcellio vulcanius
Family Trachelipodidae
Genus Nagurus
Species cristatus - Dwarf Gray Striped Isopod
Genus Trachelipus
Species rathkii - Rathke's Woodlouse
Family Rhyscotidae
Genus Rhyscotus
Species texensis - Rhyscotus texensis
Infraorder Diplocheta
Family Ligiidae - Seaslaters and Rockslaters
Genus Ligidium
Species blueridgensis - Ligidium blueridgensis
Species elrodii - Ligidium elrodii
Species gracile - Ligidium gracile
Species kofoidi - Ligidium kofoidi
Species lapetum - Ligidium lapetum
Species latum - Ligidium latum
Genus Ligia - Seaslaters
Species baudiniana - Ligia baudiniana
Species exotica - Wharf Roach
Species occidentalis - Western Seaslater
Species oceanica - European Seaslater
Species pallasii - Ligia pallasii
Suborder Valvifera - Valve-tailed Isopods
Family Chaetiliidae
Genus Chiridotea
Species coeca - sand isopod
Genus Saduria
Species entomon - Saduria entomon
Family Idoteidae
Genus Idotea
Species urotoma - Idotea urotoma
Species metallica - Idotea metallica
Species balthica - Idotea balthica
Species phosphorea - Idotea phosphorea
Genus Pentidotea
Species montereyensis - Pentidotea montereyensis
Species aculeata - Pentidotea aculeata
Species resecata - Eelgrass Isopod
Species wosnesenskii - Rockweed Isopod
Suborder Sphaeromatidea - Seapills and allies
Superfamily Seroloidea
Superfamily Sphaeromatoidea - Seapills
Family Sphaeromatidae - Typical Seapills
Genus Cassidinidea
Species ovalis - Cassidinidea ovalis
Genus Dynamenella
Genus Exosphaeroma
Species diminutum - "Exosphaeroma" diminutum
Species inornata - Exosphaeroma inornata
Genus Gnorimosphaeroma
Species noblei - Gnorimosphaeroma noblei
Species oregonense - Gnorimosphaeroma oregonense
Genus Paracerceis
Genus Sphaeroma
Species papillae - Sphaeroma papillae
Species quadridentatum - Sphaeroma quadridentatum
Genus Thermosphaeroma - Spring-Seapills
Species thermophilum - Socorro Isopod
Family Ancinidae
Family Tecticipitidae
Suborder Limnoriidea - Gribbles and Allies
Order Mysida - Mysid Shrimp
Family Mysidae
Order Tanaidacea
Family Leptocheliidae
Genus Hargeria
Species rapax - Hargeria rapax
Family Tanaididae
Genus Synaptotanais
Species notabilis - Synaptotanais notabilis
Genus Tanais
Species dulongii - Tanais dulongii