# List of crustaceans of Ireland

There are 1,774 species of crustaceans recorded in Ireland.
Crustaceans are arthropods of the subphylum Crustacea. Most are aquatic, such as shrimp, barnacles, lobsters, crayfish, krill, but some are also adapted for land living, such as woodlice and crabs.

## Class Branchiopoda (water fleas, etc.)
### Order Anomopoda
#### Family Bosminidae

* Bosmina

#### Family Chydoridae

41 species including
* Kurzia latissima

#### Family Eurycercidae

Eurycercus lamellatus
Eurycercus glacialis

#### Family Ilyocryptidae

* Ilyocryptus sordidus

#### Family Daphniidae

12 species including
* Ceriodaphnia quadrangula
* Daphnia longispina
* Daphnia pulex
* Simocephalus vetulus

#### Family Macrothricidae

8 species

### Order Ctenopoda
#### Family Sididae

3 species
* Sida crystallina
* Latona setifera

#### Family Holopediidae

1 species

### Order Haplopoda
#### Family Leptodoridae

1 species

### Order Onychopoda
#### Family Polyphemidae

1 species
* Polyphemus pediculus

#### Family Cercopagididae

2 species

#### Family Podonidae

4 species

## Class Malacostraca
### Order Leptostraca
#### Family Nebaliidae

2 species including
* Nebalia bipes

### Order Stomatopoda
#### Family Nannosquillidae

1 species

#### Family Squillidae

1 species

### Order Amphipoda
#### Family Aoridae

15 species including
* Aora gracilis
* Lembos websteri
* Microdeutopus anomalus

#### Family Ampeliscidae

15 species including
* Ampelisca aequicornis
* Ampelisca brevicornis
* Ampelisca diadema
* Ampelisca spinipes
* Ampelisca tenuicornis
* Ampelisca typica

#### Family Ampithoidae

6 species including
* Amphitholina cuniculus
* Ampithoe gammaroides
* Ampithoe helleri
* Ampithoe rubricata
* Sunamphitoe pelagica

#### Family Calliopiidae

* Calliopius laeviusculus

#### Family Caprellidae (skeleton shrimps, ghost shrimps)

11 species including
* Caprella acanthifera
* Caprella equilibra
* Caprella linearis
* Caprella mutica (Japanese skeleton shrimp)
* Phtisica marina
* Pariambus typicus

#### Family Cheirocratidae

1 species
* Cheirocratus sundevalli

#### Family Corophiidae

14 species including
* Chelicorophium chelicorne
* Corophium arenarium
* Corophium crassicorne
* Corophium curvispinum
* Corophium volutator
* Ericthonius punctatus

#### Family Crangonyctidae

1 species
* Crangonyx pseudogracilis

#### Family Eusiridae

6 species

#### Family Calliopidae

1 species

#### Family Dexaminidae

8 species including
* Dexamine spinosa

#### Family Eulimnogammaridae

* Eulimnogammarus obtusatus

#### Family Gammaridae

15–16 species
* Echinogammarus marinus
* Echinogammarus pirloti
* Echinogammarus stoerensis
* Gammarus duebeni
* Gammarus finmarchicus
* Gammarus lacustris
* Gammarus locusta
* Gammarus pulex
* Gammarus tigrinus
* Gammarus zaddachi

#### Family Gammarellidae

2 species

#### Family Megaluropidae

1 species
* Megaluropus agilis

#### Family Talitridae (landhoppers, sandhoppers, sand fleas)

6 species
* Arcitalitrus dorrieni
* Orchestia gammarellus
* Orchestia mediterranea
* Pseudorchestoidea brito
* Talitrus saltator
* Talorchestia deshayesii

#### Family Melphidippidae

2 species

#### Family Haustoriidae

1 species
* Haustorius arenarius

#### Family Hyperiidae

7 species including
* Hyperia galba

#### Family Hyalidae

6 species
* Hyale pontica
* Hyale prevostii
* Hyale stebbingi

#### Family Ischyroceridae

14 species including
* Ischyrocerus anguipes
* Jassa falcata (scud)
* Parajassa pelagica
* Siphonoecetes kroyeranus

#### Family Leucothoidae

4 species
* Leucothoe lilljeborgi

#### Family Colomastigidae

1 species

#### Family Cressidae

1 species

#### Family Stenothoidae

10 species including
* Stenothoe marina

#### Family Lysianassidae

42 species including
* Lysianassa ceratina
* Orchomenella nana

#### Family Synopiidae

2 species

#### Family Argissidae

1 species

#### Family Iphimediidae

6 species

#### Family Stegocephalidae

1 species

#### Family Acanthonotozomellidae

1 species

#### Family Epimeriidae

1 species

#### Family Liljeborgiidae

3 species

#### Family Pardaliscidae

1 species

#### Family Melitidae

13 species including
* Melita palmata
* Abludomelita obtusata
* Maerella tenuimana

#### Family Niphargidae

3 species
* Microniphargus leruthi
* Niphargus kochianus subsp. irlandicus
* Niphargus wexfordensis

#### Family Oedicerotidae

11 species including
* Perioculodes longimanus
* Pontocrates altamarinus
* Pontocrates arenarius
* Monocorophium acherusicum
* Synchelidium maculatum

#### Family Pleustidae

5 species

#### Family Amphilochidae

5–6 species including
* Amphilochus neapolitanus

#### Family Cyproideidae

1 species

#### Family Phoxocephalidae

8–9 species
* Harpinia antennaria

#### Family Photidae

8 species including
* Gammaropsis nitida
* Gammaropsis maculata

#### Family Pontoporeiidae

7 species
* Ampelisca aequicornis
* Bathyporeia elegans
* Bathyporeia guilliamsoniana
* Bathyporeia nana
* Bathyporeia pelagica
* Bathyporeia pilosa
* Bathyporeia tenuipes

#### Family Urothoidae

3 species
* Urothoe brevicornis
* Urothoe elegans
* Urothoe marina
* Urothoe poseidonis

#### Family Isaeidae

2 species including
* Microprotopus maculatus

#### Family Microprotidae

1 species

#### Family Cheluridae

1 species

#### Family Dulichiidae

2 species

#### Family Podoceridae

3 species

#### Family Phtisicidae

2 species

#### Family Mimonectidae

2? species

#### Family Scinidae

10 species

#### Family Lanceolidae

5 species

#### Family Vibiliidae

4 species

#### Family Cystisomatidae

4 species

#### Family Dairellidae

1 species

#### Family Phronimidae

1 species

#### Family Phrosinidae

3 species

#### Family Pronoidae

1species

#### Family Brachyscelidae

1 species

#### Family Tryphanidae

1 species

#### Family Platyscelidae

1 species

### Order Bathynellacea
#### Family Bathynellidae

1 species
* Antrobathynella stammeri

### Order Cumacea (hooded shrimp, comma shrimp)
#### Family Bodotriidae

9 species including
* Bodotria scorpioides
* Cumopsis fagei
* Cumopsis goodsiri
* Vaunthompsonia cristata

#### Family Diastylidae

12 species including
* Diastylis rugosa
* Diastylis bradyi
* Diastylis laevis
* Diastylis rathkei

#### Family Leuconidae

2 species

#### Family Nannastacidae

6 species

#### Family Pseudocumatidae

2 species
* Pseudocuma longicorne
* Pseudocuma simile

#### Family Lampropidae

2 species

### Order Euphausiacea
#### Family Bentheuphausiidae

1 species

#### Family Euphausiidae

13 species

### Order Decapoda
#### Family Aristeidae

1 species

#### Family Benthesicymidae

2 species

#### Family Solenoceridae

1 species

#### Family Sergestidae

3 species

#### Family Stenopodidae

1 species

#### Family Pasiphaeidae

4 species

#### Family Oplophoridae

9 species

#### Family Bresiliidae

1 species

#### Family Nematocarcinidae

2 species

#### Family Palaemonidae

6 species

#### Family Processidae

2 species

#### Family Lithodidae

2 species

#### Family Chirostylidae

3 species

#### Family Cymonomidae

1 species

#### Family Glyphocrangonidae

1 species

#### Family Laomediidae

1 species

#### Family Polychelidae

8 species

#### Family Akanthophoreidae

* Akanthophoreus gracilis

#### Family Alpheidae (snapping shrimp, pistol shrimp, alpheid shrimp)

3 species including
* Alpheus macrocheles

#### Family Astacidae (freshwater crayfish)

1 species
* Austropotamobius pallipes (white-clawed crayfish, Atlantic stream crayfish)

#### Family Atelecyclidae

1 species
* Atelecyclus rotundatus (circular crab, round crab, old man's face crab)

#### Family Thiidae

1 species

#### Family Axiidae

2 species including
* Calocaris macandreae

#### Family Callianassidae

2 species including
* Callianassa subterranea (mud shrimp, ghost shrimp)

#### Family Calliopiidae

* Apherusa jurinei

#### Family Cancridae

2 species including
* Cancer pagurus (edible crab, brown crab)

#### Family Corystidae

1 species
* Corystes cassivelaunus (masked crab, helmet crab, sand crab)

#### Family Crangonidae

11 species including
* Crangon allmanni
* Crangon crangon (brown shrimp, common shrimp, bay shrimp, sand shrimp)
* Pontophilus spinosus

#### Family Diogenidae (left-handed hermit crabs)

1 species
* Diogenes pugilator (small hermit crab, south-claw hermit crab)

#### Family Epialtidae

* Pisa tetraodon

#### Family Galatheidae

10 species including
* Galathea intermedia
* Galathea nexa
* Galathea squamifera (black squat lobster, Montagu's plated lobster)
* Galathea strigosa
* Munida rugosa (rugose squat lobster, plated lobster)

#### Family Goneplacidae

1 species
* Goneplax rhomboides (angular crab)

#### Family Grapsidae (marsh crabs, shore crabs, talon crabs)

2 species including
* Eriocheir sinensis (Chinese mitten crab, Shanghai hairy crab)

#### Family Hippolytidae (broken-back shrimp, anemone shrimp)

13 species including
* Hippolyte varians
* Thoralus cranchii

#### Family Inachidae

* Inachus dorsettensis (scorpion spider crab)
* Inachus leptochirus
* Inachus phalangium (Leach's spider crab)
* Macropodia rostrata (common spider crab, long-legged spider crab, long-legged crab)
* Macropodia tenuirostris (slender spider crab)

#### Family Leucosiidae

5 species including
* Ebalia tuberosa (Pennant's nut crab)
* Ebalia tumefacta (Bryer's nut crab)

#### Family Majidae

17 species including
* Eurynome aspera
* Eurynome spinosa
* Maja brachydactyla
* Maja squinado (European spider crab, spiny spider crab, spinous spider crab)

#### Family Nephropidae (lobsters)

* Homarus gammarus (European/common lobster)
3 species including
* Nephrops norvegicus (Norway lobster, Dublin Bay prawn, langoustine, scampi)

#### Family Paguridae

11 species including
* Anapagurus chiroacanthus
* Anapagurus hyndmanni
* Anapagurus laevis
* Cestopagurus timidus
* Pagurus bernhardus (common hermit crab, soldier crab)
* Pagurus cuanensis
* Pagurus prideaux
* Pagurus pubescens

#### Family Parapaguridae

1 species

#### Family Oregoniidae

* Hyas araneus (great spider crab)
* Hyas coarctatus

#### Family Palaemonidae

* Palaemon elegans
* Palaemon serratus (common prawn)
* Palaemonetes varians (common ditch shrimp, river shrimp, Atlantic ditch shrimp)

#### Family Palinuridae

2 species including
* Palinurus elephas (European spiny lobster, crayfish, cray, common spiny lobster, Mediterranean lobster, red lobster)

#### Family Pandalidae

5 species including
* Pandalus montagui (pink shrimp, Aesop shrimp, Aesop prawn)

#### Family Pilumnidae

* Pilumnus hirtellus (bristly crab, hairy crab)

#### Family Pinnotheridae

2 species including
* Pinnotheres pisum (pea crab)

#### Family Pirimelidae

1 species
* Pirimela denticulata

#### Family Porcellanidae (porcelain crab)

2 species
* Pisidia longicornis (long-clawed porcelain crab)
* Porcellana platycheles (broad-clawed porcelain crab)

#### Family Portunidae (swimming crabs)

14 species including
* Carcinus maenas (European green crab, European shore crab)
* Liocarcinus corrugatus (wrinkled swimming crab)
* Liocarcinus depurator (harbour crab, sandy swimming crab)
* Liocarcinus holsatus (flying crab)
* Liocarcinus marmoreus (marbled swimming crab)
* Liocarcinus navigator (arch-fronted swimming crab)
* Liocarcinus pusillus (dwarf swimming crab)
* Necora puber (velvet crab)
* Portumnus latipes (pennant's swimming crab)

#### Family Geryonidae

3 species

#### Family Thoridae (broken-back shrimp, anemone shrimp)

* Eualus occultus
* Eualus pusiolus

#### Family Upogebiidae

2 species
* Upogebia deltaura
* Upogebia stellata

#### Family Xanthidae (mud crabs, pebble crabs, rubble crabs)

6 species including
* Xantho hydrophilus
* Xantho pilipes

### Order Isopoda
#### Family Anthuridae

* Cyathura carinata

#### Family Arcturidae

3 species
* Astacilla longicornis

#### Family Armadillidiidae (pill bugs, roly polies, doodle bugs)

7 species
* Armadillidium album
* Armadillidium vulgare (pill-bug, pill woodlouse, roly-poly, doodle bug, potato bug, carpenter)

#### Family Asellidae

* Asellus aquaticus (waterlouse, aquatic sowbug, water hoglouse)
* Proasellus meridianus (one-spotted waterlouse, one-spotted water-slater)

#### Family Atylidae

* Nototropis swammerdamei
* Nototropis falcatus

#### Family Cirolanidae

10 species
* Eurydice pulchra (speckled sea louse)
* Eurydice affinis

#### Family Idoteidae

8 species
* Idotea baltica
* Idotea chelipes
* Idotea granulosa
* Idotea linearis
* Idotea neglecta
* Idotea pelagica

#### Family Janiridae

10 species
* Ianiropsis breviremis
* Jaera albifrons
* Jaera forsmani
* Jaera nordmanni
* Janira maculosa

#### Family Ligiidae

1 species
* Ligia oceanica (sea slater, common sea slater, sea roach)

#### Family Limnoriidae (gribble worms)

2 species
* Limnoria lignorum (gribble)

#### Family Munnidae

4 species
* Munna kroyeri

#### Family Oniscidae

1 species
* Oniscus asellus (common woodlouse)

#### Family Philosciidae

1 species
* Philoscia muscorum (common striped woodlouse, fast woodlouse)

#### Family Porcellionidae

8 species
* Porcellio scaber (common rough woodlouse)
* Porcellionides pruinosus

#### Family Sphaeromatidae

* Dynamene bidentata
* Lekanesphaera hookeri
* Lekanesphaera rugicauda (Sphaeroma rugicauda)
* Sphaeroma serratum

#### Family Trichoniscidae

13 species
* Androniscus dentiger (rosy / pink woodlouse)
* Trichoniscus pusillus (common pygmy woodlouse)

#### Family Paramunnidae

2 species

#### Family Pleurogonidae

2 species

#### Family Thambematidae

1 species

#### Family Desmosomatidae

2 species

#### Family Eurycopidae

6 species

#### Family Ischnomesidae

2 species

#### Family Munnopsididae

2 species

#### Family Bopyridae

7 species

#### Family Hemioniscidae

1 species

#### Family Phryxidae

3 species

#### Family Styloniscidae

1 species

#### Family Halophilosciidae

1 species

#### Family Platyarthridae

1 species

#### Family Cylisticidae

1 species

#### Family Leptanthuridae

1 species

#### Family Ancinidae

1 species

#### Family Aegidae

6 species

#### Family Dendrotiidae

2 species

#### Family Haploniscidae

10 species

#### Family Ilyarachnidae

1 species

### Order Mysida (opossum shrimps)
#### Family Petalophthalmidae

3 species

#### Family Mysidae

66 species including
* Gastrosaccus spinifer
* Hemimysis anomala (bloody-red mysid)
* Leptomysis gracilis
* Leptomysis lingvura
* Mysis relicta
* Neomysis integer
* Praunus flexuosus (chameleon shrimp)

### Order Tanaidacea (tanaids)

* Pseudoparatanais batei (incerta sedis)

#### Family Tanaidae

1 species
* Tanais dulongii

#### Family Paratanaidae

2 species

#### Family Anarthruridae

3 species

#### Family Typhlotanaidae

2 species

#### Family Nototanaidae

1species

#### Family Neotanaidae

2 species

#### Family Apseudidae

1 species

#### Family Sphyrapidae

2 species

## Class Maxillopoda
### Order Arguloida
#### Family Argulidae (carp lice, fish lice)

2 species including
* Argulus foliaceus (common fish louse)

### Order Misophrioida
#### Family Misophriidae

1 species

### Order Calanoida
#### Family Calocalanidae

5 species including
* Calocalanus contractus

#### Family Diaptomidae

6 species including
* Diaptomus castor

#### Family Temoridae

4 species

#### Family Metridinidae

10 species

#### Family Centropagidae

6 species

#### Family Lucicutiidae

8 species

#### Family Heterorhabdidae

12 species

#### Family Augaptilidae

28 species

#### Family Arietellidae

6 species

#### Family Nullosetigeridae

2 species

#### Family Pseudocyclopidae

2 species

#### Family Candaciidae

6 species

#### Family Pontellidae

4 species

#### Family Parapontellidae

1 species

#### Family Bathypontiidae

1 species

#### Family Acartiidae

4 species

#### Family Clausocalanidae

5 species

#### Family Calanidae

7 species

#### Family Mecynoceridae

1 species

#### Family Eucalanidae

4 species

#### Family Megacalanidae

3 species

#### Family Paracalanidae

3 species

#### Family Spinocalanidae

7 species

#### Family Aetideidae

35 species

#### Family Euchaetidae

12 species

#### Family Phaennidae

12 species

#### Family Scolecitrichidae

22 species

#### Family Diaixidae

2 species

#### Family Stephidae

3 species

#### Family Tharybidae

3 species

#### Family Pseudocyclopiidae

1 species

### Order Kentrogonida
#### Family Sacculinidae

1 species
* Sacculina carcini

### Order Apygophora
#### Family Trypetesidae

2 species

### Order Cyclopoida
#### Family Enteropsidae

* Mychophilus roseus

#### Family Oithonidae

6 species

#### Family Cyclopinidae

8 species

#### Family Oithonidae

6 species

#### Family Cyclopinidae

8 species

#### Family Cyclopidae

41 species

#### Family Notodelphyidae

23 species

#### Family Ascidicolidae

12 species

### Order Harpacticoida
#### Family Cylindropsyllidae

3 species
* Cylindropsyllus laevis

#### Family Dactylopusiidae

* Diarthrodes roscoffensis

#### Family Harpacticidae

12 species
* Tigriopus brevicornis (tigger-pod)

#### Family Longipediidae

6 species

#### Family Canuellidae

2 species

#### Family Aegisthidae

2 species

#### Family Ectinosomatidae

16-17 species

#### Family Darcythompsoniidae

2 species

#### Family Euterpinidae

1 species

#### Family Tachidiidae

5 species

#### Family Thompsonulidae

1 species

#### Family Tisbidae

18 species

#### Family Porcellidiidae

4-5 species

#### Family Peltidiidae

8 species

#### Family Clytemnestridae

2 species

#### Family Tegastidae

4 species

#### Family Thalestridae

34 species

#### Family Ambunguipedidae

1 species

#### Family Balaenophilidae

1 species

#### Family Parastenheliidae

1 species

#### Family Diosaccidae

38 species

#### Family Metidae

1 species

#### Family Ameiridae

23 species

#### Family Paramesochridae

5 species

#### Family Tetragonicipitidae

6 species

#### Family Canthocamptidae

26 species

#### Family Orthopsyllidae

1 species

#### Family Leptastacidae

2 species

#### Family Cletodidae

8 species

#### Family Huntemanniidae

1 species

#### Family Rhizothricidae

3 species

#### Family Argestidae

2 species

#### Family Laophontidae

36 species

#### Family Laophontopsidae

1 species

#### Family Normanellidae

2 species

#### Family Ancorabolidae

3 species

### Order Mormonilloida
#### Family Mormonillidae

2 species

### Order Poecilostomatoida
#### Family Ergasilidae

3 species

#### Family Rhynchomolgidae

4 species

#### Family Macrochironidae

1 species

#### Family Sabelliphilidae

4 species

#### Family Lichomolgidae

16-17 species

#### Family Pseudanthessiidae

5 species

#### Family Oncaeidae

14 species

#### Family Sapphirinidae

2 species

#### Family Clausidiidae

3 species

#### Family Synaptiphilidae

1 species

#### Family Mytilicolidae

3 species

#### Family Anthessiidae

1 species

#### Family Myicolidae

1 species

#### Family Corycaeidae

2-3 species

#### Family Bomolochidae

2 species

#### Family Taeniacanthidae

2 species

#### Family Chondracanthidae

6 species

#### Family Splanchnotrophidae

3 species

#### Family Philichthyidae

1 species

#### Family Lamippidae

2 species

#### Family Synapticolidae

1 species

#### Family Phyllodicolidae

1 species

#### Family Herpyllobiidae

1 species

### Order Siphonostomatoida
#### Family Rataniidae

1 species

#### Family Asterocheridae

16 species

#### Family Artotrogidae

1 species

#### Family Dyspontiidae

5 species

#### Family Nanaspididae

1 species

#### Family Micropontiidae

1 species

#### Family Cancerillidae

2 species

#### Family Nicothoidae

8 species

#### Family Melinnacheridae

1 species

#### Family Caligidae

18 species including
* Lepeophtheirus pectoralis

#### Family Trebiidae

1 species

#### Family Pandaridae

3 species

#### Family Cecropidae

3 species

#### Family Dichelesthiidae

1species

#### Family Hatschekiidae

1 species

#### Family Lernanthropidae

1 species

#### Family Pennellidae

6 species

#### Family Sphyriidae

2 species

#### Family Lernaeopodidae

10-11 species

### Order Monstrilloida
#### Family Monstrillidae

7 species

### Order Scalpellomorpha
#### Family Lepadidae

6 species
* Lepas anatifera (pelagic gooseneck barnacle, smooth gooseneck barnacle)
* Dosima fascicularis

### Order Scalpelliformes
#### Family Scalpellidae

4 species including
* Scalpellum scalpellum

### Order Sessilia (acorn barnacles)
#### Family Coronulidae

2 species

#### Family Tetraclitidae

1 species

#### Family Archaeobalanidae

3 species including
* Semibalanus balanoides

#### Family Balanidae

6-7 species including
* Balanus balanus
* Balanus crenatus
* Balanus perforatus
* Elminius modestus

#### Family Chthamalidae

2 species
* Chthamalus montagui (Montagu's stellate barnacle)
* Chthamalus stellatus (Poli's stellate barnacle)

#### Family Pyrgomatidae

1 species
* Megatrema anglicum (Boscia anglica)

#### Family Verrucidae

1 species
* Verruca stroemia

### Order Porocephalida
#### Family Linguatulidae

1 species

### Order Platycopioida
#### Family Platycopiidae

1species

## Class Ostracoda (seed shrimps)
### Order Myodocopida
#### Family Cylindroleberididae

2 species

#### Family Philomedidae

1species

### Order Halocyprida
#### Family Polycopidae

2 species

### Order Podocopida
#### Family Bythocytheridae

2-3 species

#### Family Cytheridae

1species

#### Family Cytherideidae

4 species

#### Family Krithidae

1 species

#### Family Cuneocytheridae

1 species

#### Family Cytheruridae

13 species

#### Family Hemicytheridae

5 species

#### Family Leptocytheridae

4 species

#### Family Limnocytheridae

5 species

#### Family Loxoconchidae

8 species

#### Family Neocytherideidae

1 species

#### Family Paradoxostomatidae

11 species

#### Family Trachyleberididae

6 species

#### Family Xestoleberididae

2 species

#### Family Darwinulidae

2 species

#### Family Candonidae

22 species including
* Candona candida

#### Family Cyprididae

25 species including
* Cypris

#### Family Ilyocyprididae

2 species

#### Family Pontocyprididae

3 species