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Subphylum Crustacea - Crustaceans

Phylum Arthropoda - Arthropods
Subphylum Crustacea - Crustaceans

Class Branchiopoda - Branchiopods
Order Anostraca - Brine Shrimp and Fairy Shrimp
Family Artemiidae - Brine shrimp
Genus Artemia
Species monica - Artemia monica
Family Branchinectidae
Family Chirocephalidae
Genus Eubranchipus
Species bundyi - Eubranchipus bundyi
Species vernalis - Eubranchipus vernalis
Species serratus - Eubranchipus serratus
Family Streptocephalidae
Genus Streptocephalus
Species sealii - Streptocephalus sealii
No Taxon ID images
Family Thamnocephalidae
Genus Dendrocephalus
Species proeliator - Dendrocephalus proeliator
Order Diplostraca
Suborder Spinicaudata
Family Limnadiidae
Genus Eulimnadia
Species geayi - Eulimnadia geayi
Suborder Laevicaudata - Clam Shrimp
Family Lynceidae
Genus Lynceus
Species brachyurus - Holarctic Clam Shrimp
Suborder Cladocera - Water Fleas
Infraorder Onychopoda - Onychopods
Family Podonidae
Genus Podon
Species leuckartii - Podon leuckartii
Family Cercopagididae
Genus Bythotrephes
Species longimanus - Spiny Water Flea
Family Polyphemidae
Genus Polyphemus
Species pediculus - Polyphemus pediculus
Infraorder Anomopoda - Anomopods
Family Bosminidae
Genus Bosmina
Species freyi - Bosmina freyi
Family Chydoridae
Genus Chydorus
Genus Eurycercus
Genus Picripleuroxus
Species denticulatus - Picripleuroxus denticulatus
Family Daphniidae
Genus Daphnia
Species galeata - Daphnia galeata
Genus Simocephalus
Species serrulatus - Simocephalus serrulatus
Species mixtus - Simocephalus mixtus
Family Ilyocryptidae
Family Macrothricidae
Infraorder Ctenopoda - Ctenopods
Family Sididae
Genus Sida
Species crystallina - Sida crystallina
Genus Penilia
Species avirostris - Penilia avirostris
Family Holopediidae
Genus Holopedium
Species gibberum - Holopedium gibberum
Species glacialis - Holopedium glacialis
Infraorder Haplopoda - Haplopods
Family Leptodoridae
Genus Leptodora
Species kindtii - Leptodora kindtii
Order Notostraca - Tadpole Shrimp
Family Triopsidae
Genus Lepidurus
Species packardi - Vernal Pool Tadpole Shrimp
Genus Triops
Species longicaudatus - Triops longicaudatus
Class Malacostraca - Malacostracans
Superorder Eucarida - Eucarida (Crabs, Crayfish, Shrimp, etc.)
Order Decapoda - Crabs, Crayfishes, Lobsters, Prawns, and Shrimp
Infraorder Anomura - Hermit Crabs and Mole Crabs
Superfamily Galatheoidea
Family Munididae - Squat Lobsters
Genus Pleuroncodes
Species planipes - Red Crab
Family Porcellanidae - Porcelain Crabs
Genus Euceramus
Species praelongus - Euceramus praelongus
Genus Petrolisthes
Species armatus - Green Porcelain Crab
Species eriomerus - Petrolisthes eriomerus
Genus Polyonyx
Species gibbesi - Polyonyx gibbesi
Genus Pachycheles
Species rudis - Pachycheles rudis
Superfamily Hippoidea
Family Hippidae - Mole Crabs
Genus Emerita
Species analoga - Pacific Mole Crab
Species talpoida - Atlantic Mole Crab
Superfamily Paguroidea - Hermit Crabs
Family Lithodidae
Genus Cryptolithodes
Species sitchensis - Cryptolithodes sitchensis
Genus Paralithodes
Species rathbuni - Spiny King Crab
Family Diogenidae
Genus Clibanarius
Species vittatus - Thinstripe Hermit Crab
Genus Petrochirus
Species diogenes - Petrochirus diogenes
Family Paguridae
Genus Pagurus
Species acadianus - Pagurus acadianus
Species annulipes - Pagurus annulipes
Species grainosinanus - Grainyhand Hermit Crab
Species hirsutiusculus - Hairy Hermit Crab
Species longicarpus - Long-Clawed Hermit Crab
Species pollicaris - Flat-clawed Hermit Crab
Species samuelis - Blueband Hermit Crab
Family Coenobitidae
Genus Coenobita
Species clypeatus - Caribbean hermit crab
Infraorder Astacidea - Crayfishes and Lobsters
Superfamily Astacoidea - Crayfish
Family Astacidae
Genus Pacifastacus
Species gambelli - Pacifastacus gambelli
Species leniusculus - Signal Crayfish
Family Cambaridae
Genus Cambarus
No Taxon Subgenus Cambarus
Species bartonii - Cambarus bartonii
Subspecies bartonii - Cambarus bartonii bartonii
No Taxon bartonii complex
No Taxon Subgenus Hiaticambarus
Species speciosus - Beautiful Crayfish
No Taxon Subgenus Jugicambarus
Species dubius - Cambarus dubius
Species asperimanus - Cambarus asperimanus
Species tartarus - Oklahoma cave crayfish
No Taxon Subgenus Lacunicambarus
Species diogenes - Devil Crayfish
No Taxon Subgenus Puncticambarus
Species robustus - Robust Crayfish
No Taxon Subgenus Tubericambarus
Species polychromatus - Cambarus polychromatus
Genus Orconectes
No Taxon Subgenus Cockerinus
Species propinquus - Northern Clearwater Crayfish
Species erichsonianus - Reticulate Crayfish
No Taxon Subgenus Gremicambarus
Species virilis - Virile Crayfish
No Taxon Subgenus Procericambarus
Species rusticus - Rusty Crayfish
No Taxon Subgenus Faxonius
Species limosus - Spiny-Cheek Crayfish
Species obscurus - Allegheny Crayfish
No Taxon Subgenus Orconectes
Species maletae - Orconectes maletae
No Taxon Subgenus Trisellescens
Species validus - Powerful Crayfish
Species immunis - Calico Crayfish
Genus Procambarus
No Taxon Subgenus Scapulicambarus
Species clarkii - Red Swamp Crayfish
No Taxon Subgenus Leconticambarus
Species alleni - Florida Crayfish
No Taxon Subgenus Ortmannicus
Species fallax - Slough Crayfish
Species acutus - White River Crayfish
Subspecies acutus - White River Crayfish
Genus Faxonius
Species luteus - Faxonius luteus
Species palmeri - Faxonius palmeri
Family Nephropidae
Genus Homarus
Species americanus - American Lobster
Infraorder Axiidea
Family Callianassidae - Ghost Shrimp
Genus Neotrypaea
Infraorder Brachyura - True Crabs
Family Calappidae - Box crabs
Genus Calappa
Species flammea - Flame-streaked Box Crab
Family Cancridae - Rock Crabs
Genus Metacarcinus
Species magister - Dungeness Crab
Genus Cancer
Species borealis - Cancer borealis
Species gracilis - Slender Crab
Species irroratus - Atlantic Rock Crab
Species productus - Red Rock Crab
Family Epialtidae - Kelp Crabs and Spider Crabs
Genus Libinia - Spider Crabs
Species dubia - Libinia dubia
Species emarginata - Portly Spider Crab
Genus Loxorhynchus
Species grandis - Sheep crab
Species crispatus - Masking Crab
Genus Pugettia
Species producta - Northern Kelp Crab
Genus Taliepus
Species nuttallii - Southern Kelp Crab
Family Gecarcinidae - Land Crabs
Genus Cardisoma
Species guanhumi - Blue Land Crab
Family Grapsidae - Marsh Crabs, Shore Crabs, and Talon Crabs
Genus Hemigrapsus
Species oregonensis - Green Shore Crab
Species sanguineus - Japanese Shore Crab
Species nudus - Purple Shore Crab
Genus Grapsus
Species grapsus - Sally Lightfoot Crab
Genus Pachygrapsus
Species transversus - Mottled Shore Crab
Species crassipes - Striped Shore Crab
Family Hepatidae
Genus Hepatus
Species epheliticus - Calico Crab
Family Inachidae
Genus Stenorhynchus
Species seticornis - Yellowline Arrow Crab
Family Leucosiidae
Genus Persephona
Species mediterranea - Mottled Purse Crab
Genus Randallia
Species ornata - Globose Sand Crab
Family Ocypodidae - Fiddler Crabs and Ghost Crabs
Genus Ocypode - Ghost Crabs
Species quadrata - Atlantic Ghost Crab
Genus Uca - Fiddler Crabs
Species crenulata - Mexican Fiddler Crab
Species longisignalis - Longwave Gulf Fiddler
Species minax - Red-jointed Fiddler Crab
Species pugilator - Atlantic Sand Fiddler Crab
Species pugnax - Atlantic Marsh Fiddler Crab
Species thayeri - Atlantic Mangrove Fiddler Crab
Family Panopeidae
Genus Lophopanopeus
Species bellus - Lophopanopeus bellus
Genus Dyspanopeus
Species sayi - Say's Mud Crab
Genus Panopeus
Species lacustris - Knot-fingered mud crab
Family Pilumnidae
Genus Pilumnus
Species sayi - Spineback Hairy Crab
Family Pinnotheridae - Pea Crabs
Genus Dissodactylus
Species mellitae - Sand-dollar Pea Crab
Genus Pinnixa
Species chaetopterana - Tube Pea Crab
Family Portunidae - Swimming Crabs
Genus Achelous
Species spinimanus - Achelous spinimanus
Genus Arenaeus
Species cribrarius - Speckled Swimming Crab
Genus Callinectes
Species ornatus - Callinectes ornatus
Species sapidus - Atlantic Blue Crab
Genus Carcinus
Species maenas - Green Crab
Genus Ovalipes
Species ocellatus - Lady Crab
Genus Portunus
Species sayi - Portunus sayi
Family Sesarmidae
Genus Armases
Species cinereum - Squareback Marsh Crab
Genus Aratus
Species pisonii - Mangrove Tree Crab
Family Ucididae
Genus Ucides
Species cordatus - Mangrove crab
Family Xanthidae - Mud Crabs
Genus Menippe
Species mercenaria - Menippe mercenaria
Infraorder Stenopodidea
Family Stenopodidae
Genus Stenopus
Species hispidus - Banded Coral Shrimp
Infraorder Caridea - Caridean shrimps
Family Crangonidae
Genus Crangon
Species septemspinosa - Crangon septemspinosa
Family Hippolytidae
Genus Latreutes
Species fucorum - Latreutes fucorum
Genus Lysmata
Species californica - Red Rock Shrimp
Family Palaemonidae
Genus Palaemon
Species elegans - Palaemon elegans
Species intermedius - Palaemon intermedius
Species pugio - Palaemon pugio
Species vulgaris - Palaemon vulgaris
Family Pandalidae
Genus Pandalus
Species platyceros - California Spot Prawn
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 Crangonyx
Species richmondensis - Crangonyx richmondensis
Species gracilis - Crangonyx gracilis
Genus Stygobromus
Species russelli - Stygobromus russelli
Species pecki - Peck's Cave Amphipod
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 Jassa
Species marmorata - Jassa marmorata
Genus Ericthonius
Species rubricornis - Ericthonius rubricornis
Family Talitridae - Beach Hoppers
Genus Americorchestia
Species megalophthalma - Americorchestia megalophthalma
Species longicornis - Americorchestia longicornis
Genus Arcitalitrus
Species sylvaticus - Lawn Shrimp
Genus Megalorchestia
Species corniculata - Megalorchestia corniculata
Species californiana - California beach flea
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 Hyperiidae
Genus Hyperia
Family Phronimidae
Genus Phronima
Order Isopoda - Isopods
Suborder Asellota - Asellotes
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 Gnathostenetroidoidea
Superfamily Stenetrioidea
Superfamily Janiroidea
Family Janiridae
Genus Jaera
No Taxon albifrons complex
Species albifrons - Jaera albifrons
Genus Carpias
Species minutus - Carpias minutus
Suborder Microcerberidea
No Taxon Scutocoxifera
Suborder Cymothoida - Predatory and Parasitic Isopods
Family Cirolanidae
Genus Bathynomus - Giant Isopods
Genus Cirolanides
Species texensis - Cirolanides texensis
Genus Excirolana
Species chiltoni - Excirolana chiltoni
Genus Cirolana
Family Aegidae
Family Cymothoidae
Genus Anilocra
Species acuta - Anilocra acuta
Genus Elthusa
Species californica - Elthusa californica
Infraorder Epicaridea - Crustacean-parasitic Isopods
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 spinosus - Miktoniscus spinosus 0
Species medcofi - Miktoniscus medcofi
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 Armadilloniscus
Species ellipticus - Armadilloniscus ellipticus
Species lindahli - Armadilloniscus lindahli
Species holmesi - Armadilloniscus holmesi
Genus Detonella
Species papillicornis - Detonella papillicornis
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 Trachelipus
Species rathkii - Rathke's Woodlouse
Genus Nagurus
Species cristatus - Dwarf Gray Striped Isopod
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 Saduria
Species entomon - Saduria entomon
Genus Chiridotea
Species coeca - sand isopod
Family Idoteidae
Genus Idotea
Species urotoma - Idotea urotoma
Species metallica - Idotea metallica
Species balthica - Idotea balthica
Species phosphorea - Idotea phosphorea
Genus Pentidotea
Species aculeata - Pentidotea aculeata
Species montereyensis - Pentidotea montereyensis
Species resecata - Eelgrass Isopod
Species wosnesenskii - Rockweed Isopod
Suborder Sphaeromatidea - Seapills and allies
Superfamily Sphaeromatoidea - Seapills
Family Sphaeromatidae - Typical Seapills
Genus Cassidinidea
Species ovalis - Cassidinidea ovalis
Genus Dynamenella
Genus Exosphaeroma
Species inornata - Exosphaeroma inornata
Species diminutum - "Exosphaeroma" diminutum
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
Superfamily Seroloidea
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
Order Stomatopoda - Mantis Shrimps
Family Squillidae
Genus Squilla
Species empusa - Squilla empusa
Class Maxillopoda - Maxillopods
Subclass Branchiura
Order Arguloida
Family Argulidae - Fish Lice
Genus Argulus
Subclass Copepoda - Copepods
Order Calanoida - Calanoid copepods
Family Acartiidae
Genus Acartia
Family Calanidae
Family Centropagidae
Family Diaptomidae
Family Temoridae
Genus Temora
Genus Epischura
Species lacustris - Epischura lacustris
Order Cyclopoida - Cyclopoid copepods
Family Cyclopidae
Genus Acanthocyclops
Genus Diacyclops
Species thomasi - Diacyclops thomasi
Family Lernaeidae
Genus Lernaea
Species cyprinacea - Anchor Worm
Order Poecilostomatoida
Family Oncaeidae
Genus Oncaea
Family Sapphirinidae
Genus Sapphirina
Order Siphonostomatoida
Family Lernaeopodidae
Genus Salmincola
Species californiensis - Salmincola californiensis
Family Caligidae
Order Harpacticoida - Harpacticoid copepods
Subclass Thecostraca
Order Lepadiformes
Family Lepadidae
Genus Lepas
Genus Conchoderma
Species auritum - Conchoderma auritum
Order Sessilia - Sessile Barnacles
Family Chthamalidae
Genus Chthamalus
Species dalli - Chthamalus dalli
Family Balanidae
Genus Amphibalanus
Species amphitrite - Amphibalanus amphitrite
Genus Balanus
Species nubilus - Giant Acorn Barnacle
Family Coronulidae
Genus Coronula
Species diadema - Coronula diadema
Class Ostracoda - Ostracods