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- Species (452)
Lifeforms
- Worms (83)
- Molluscs (55)
- Fishes (46)
- Crustaceans (38)
- Insects (25)
- Birds (21)
- Myriapods (13)
- Mammals (9)
- Spiders and allies (6)
- Amphibians (2)
- Reptiles (2)
Taxon group
- mollusc (58)
- crustacean (44)
- bony fish (Actinopterygii) (36)
- bird (32)
- coelenterate (=cnidarian) (24)
- annelid (22)
- echinoderm (20)
- sponge (Porifera) (19)
- roundworm (Nematoda) (17)
- tapeworm (Cestoda) (13)
- flatworm (Turbellaria) (12)
- tunicate (Urochordata) (10)
- cartilagenous fish (Chondrichthyes) (9)
- millipede (9)
- terrestrial mammal (8)
- acarine (Acari) (6)
- rotifer (6)
- bryozoan (5)
- springtail (Collembola) (5)
- trematode (5)
- centipede (4)
- lampshell (Brachiopoda) (4)
- waterbear (Tardigrada) (4)
- acorn worm (Hemichordata) (3)
- comb jelly (Ctenophora) (3)
- marine mammal (3)
- monogenean (3)
- peanut worm (Sipuncula) (3)
- ribbon worm (Nemertea) (3)
- amphibian (2)
- arrow worm (Chaetognatha) (2)
- entoproct (2)
- gastrotrich (2)
- gnathostomulid (2)
- hairworm (Nematomorpha) (2)
- insect - true fly (Diptera) (2)
- jawless fish (Agnatha) (2)
- mud dragon (Kinorhyncha) (2)
- priapulid (2)
- reptile (2)
- spoon worm (Echiura) (2)
- thorny-headed worm (Acanthocephala) (2)
- unassigned (2)
- cycliophoran (1)
- false scorpion (Pseudoscorpiones) (1)
- harvestman (Opiliones) (1)
- insect - alderfly (Megaloptera) (1)
- insect - beetle (Coleoptera) (1)
- insect - booklouse (Psocoptera) (1)
- insect - bristletail (Archaeognatha) (1)
- insect - caddis fly (Trichoptera) (1)
- insect - cockroach (Dictyoptera) (1)
- insect - dragonfly (Odonata) (1)
- insect - earwig (Dermaptera) (1)
- insect - flea (Siphonaptera) (1)
- insect - hymenopteran (1)
- insect - lacewing (Neuroptera) (1)
- insect - louse (Phthiraptera) (1)
- insect - mantis (Mantodea) (1)
- insect - mayfly (Ephemeroptera) (1)
- insect - orthopteran (1)
- insect - scorpion fly (Mecoptera) (1)
- insect - silverfish (Thysanura) (1)
- insect - snakefly (Raphidioptera) (1)
- insect - stick insect (Phasmida) (1)
- insect - stonefly (Plecoptera) (1)
- insect - stylops (Strepsiptera) (1)
- insect - thrips (Thysanoptera) (1)
- insect - true bug (Hemiptera) (1)
- insect - web-spinner (Embioptera) (1)
- loriciferan (1)
- pauropod (1)
- proturan (1)
- scorpion (1)
- sea spider (Pycnogonida) (1)
- spider (Araneae) (1)
- two-tailed bristletail (Diplura) (1)
Establishment means
- Native (444)
- Non-native (8)
Habitat
- marine (334)
- terrestrial (211)
- freshwater (3)
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Anura – frogs and toads
Order, Amphibian, Freshwater, terrestrial
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Aphelenchida
Order, Roundworm (Nematoda), Terrestrial
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Aphragmophora
Order, Arrow worm (Chaetognatha), Marine
-
Aplousobranchia
Order, Tunicate (Urochordata), Marine
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Apochela
Order, Waterbear (Tardigrada), Terrestrial
-
Apodida
Order, Echinoderm, Marine
-
Apodiformes
Order, Bird
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Araeolaimida
Order, Roundworm (Nematoda), Marine, terrestrial
-
Araneae – spiders
Order, Spider (Araneae), Marine, terrestrial
Spider, Invertebrates (Spiders), damhain-allaidh, damhan-allaidh, pocannan-salainn, poca-salainn
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Archaeogastropoda
Order, Mollusc, Marine
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Archaeognatha
Order, Insect - bristletail (Archaeognatha), Marine, terrestrial
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Architaenioglossa
Order, Mollusc, Marine, terrestrial
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Arcoida
Order, Mollusc, Marine
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Arguloidea
Order, Crustacean, Marine, terrestrial
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Arhynchobdellida
Order, Annelid, Marine, terrestrial
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Arthrotardigrada
Order, Waterbear (Tardigrada), Marine, terrestrial
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Artiodactyla
Order, Terrestrial mammal, Terrestrial
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Ascaridida
Order, Roundworm (Nematoda), Marine
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Aspidochirotida
Order, Echinoderm, Marine
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Aspidogastrida
Order, Trematode