This check list is based on Gregory, S.J. (2009) Woodlice and Waterlice in Britain and Ireland. FSC/ BRC.
Nomenclature follows the current World List of Marine, Freshwater and Terrestrial Isopod Crustaceans (invertebrates.si.edu/isopod)
Valid species names are shown in bold type. Click on a species name to access its brief species account.
The most recent synonyms, which include a number of minor spelling mistakes perpetuated by earlier British workers, are listed beneath the current name. * indicates introduced species only found inside heated glasshouses.
Woodlice and Waterlice of Britain and Ireland: systematic check list
CLASS CRUSTACEA ORDER ISOPODA Sub-order ASELLOTA (Aquatic Waterlice) Family Asellidae Asellus aquaticus (Linnaeus, 1758) Proasellus cavaticus (Leydig, 1871) Asellus cavaticus Leydig, 1871 Asellus cavaticus Schiödte, 1871 Proasellus meridianus (Racovitza, 1919) Asellus meridianus Racovitza, 1919 Caecidotea communis (Say, 1818) Asellus communis (Say, 1818) Sub-order ONISCIDEA (Terrestrial Woodlice) Section Diplocheta Family Ligiidae Ligia oceanica (Linnaeus, 1767) Ligidium hypnorum (Cuvier, 1792) Section Synocheta Family Trichoniscidae Androniscus dentiger Verhoeff, 1908 Haplophthalmus danicus Budde-Lund, 1880 Haplophthalmus mengii (Zaddach, 1844) Haplophthalmus mengei (Zaddach, 1844) Haplophthalmus montivagus Verhoeff, 1941 Metatrichoniscoides celticus Oliver & Trew, 1981 Metatrichoniscoides leydigii (Weber, 1880) Metatrichoniscoides leydigi (Weber, 1880) *Miktoniscus linearis (Patience, 1908) Miktoniscus patiencei Vandel, 1946 Oritoniscus flavus (Budde-Lund, 1906) Trichoniscoides albidus (Budde-Lund, 1880) Trichoniscoides helveticus (Carl, 1908) Trichoniscoides helveticus Carl, 1908 Trichoniscoides saeroeensis Lohmander, 1923 Trichoniscoides sarsi Patience, 1908 Trichoniscus provisorius Racovitza, 1908 Trichoniscus pusillus form provisorius Racovitza, 1908 Trichoniscus pusillus Brandt, 1833 Trichoniscus pusillus form pusillus Brandt, 1833 Trichoniscus pygmaeus Sars, 1899 Family Buddelundiellidae Buddelundiella cataractae Verhoeff, 1930 Family Styloniscidae *Cordioniscus stebbingi (Patience, 1907) *Styloniscus mauritiensis (Barnard 1936) *Styloniscus spinosus (Patience, 1907) Cordioniscus spinosus (Patience, 1907) Section Crinocheta Family Halophilosciidae Halophiloscia couchii (Kinahan, 1858) Halophiloscia couchi (Kinahan, 1858) Stenophiloscia glarearum Verhoeff, 1908 Stenophiloscia zosterae Verhoeff, 1928 Family Philosciidae *Burmoniscus meeusei (Holthuis, 1947) Chaetophiloscia meeusei Holthuis, 1947 Chaetophiloscia sp. (females only) *Pseudotyphloscia cf alba Philoscia muscorum (Scopoli, 1763) *“Setaphora” patiencei (Bagnall, 1908) Chaetophiloscia patiencei (Bagnall, 1908) Family Platyarthridae Platyarthrus hoffmannseggii Brandt, 1833 Platyarthrus hoffmannseggi Brandt, 1833 *Trichorhina tomentosa (Budde-Lund, 1893) Family Oniscidae Oniscus asellus ssp. asellus Linnaeus, 1758 Oniscus asellus ssp. occidentalis Bilton, 1994 Family Porcellionidae *Agabiformius lentus (Budde-Lund, 1885) Porcellio dilatatus Brandt, 1833 Porcellio laevis (Latreille, 1804) Porcellio laevis Latreille, 1804 Porcellio scaber Latreille, 1804 Porcellio spinicornis Say, 1818 Porcellio pictus Brandt & Ratzeburg, 1833 Acaeroplastes melanurus (Budde-Lund, 1885) Metoponorthus melanurus Budde-Lund, 1885 Porcellionides cingendus (Kinahan, 1857) Metoponorthus cingendus (Kinahan, 1857) Porcellionides pruinosus (Brandt, 1833) Metoponorthus pruinosus (Brandt, 1833) Family Trachelipodidae *Nagurus cristatus (Dollfus, 1889) *Nagurus nanus (Budde-Lund, 1908) Trachelipus rathkii (Brandt, 1833) Trachelipus rathkei (Brandt, 1833) Family Cylisticidae Cylisticus convexus (De Geer, 1778) Family Armadillidiidae Armadillidium album Dollfus, 1887 Armadillidium depressum Brandt, 1833 Armadillidium nasatum Budde-Lund, 1885 Armadillidium speyeri Jackson, 1923 Armadillidium pictum Brandt, 1833 Armadillidium pulchellum (Zencker, 1798) Armadillidium vulgare (Latreille, 1804) Eluma caelata (Miers, 1877) Eluma caelatum (Miers, 1877) Eluma purpurascens Budde-Lund, 1885 Family Armadillidae *Reductoniscus costulatus Kesselyák, 1930 *Venezillo parvus (Budde-Lund, 1885)