Checklist of Nordic Collembola With notes on habitat preferences and presence/absence in individual countries. Arne Fjellberg (Updated February 2007) A: Arctic islands of Norway D: Denmark Fa: Faroe Islands Fi: Finland I: Iceland N: Norway S: Sweden Subclass ARTHROPLEONA Marine littoral. Few records (D). Hypogastrura manubrialis (Tullberg, 1869) Section Poduromorpha Compost, organic debris. Uncommon (D,Fi,I,S). Hypogastrura vernalis (Carl, 1901) Dry seashore meadows. Common (D,Fi,N,S). Hypogastrura purpurescens (Lubbock, 1867) Poduridae Compost, seashores and rich soil. Common (D,Fa,Fi,I,N,S) Hypogastrura distincta (Axelson, 1902) Podura aquatica Linné, 1758 Compost, garden soil. Rare (Fi). Wetlands, ponds. Widespread (D,Fi,S,N) Hypogastrura socialis (Uzel, 1891) Inland coniferous forest floor, often on snow. Boeal (Fi,N,S). Hypogastrura sahlbergi (Reuter, 1895) Hypogastruridae Wetlands, seashores. Scattered records (Fi,N,S). Hypogastrura lapponica (Axelson, 1902) Choreutinula inermis (Tullberg, 1871) On bark of trees, on snow in winter. Northern (Fi,N,S). Coniferous forest, in bark and litter. Common (Fi,N,S). Choreutinula kulla Fjellberg, 2007 Ceratophysella longispina (Tullberg, 1876) Sand/gravel meadows near sea. Uncommon (N,S) Wet arctic tundra (A). Ceratophysella granulata Stach, 1949 Schoettella ununguiculata (Tullberg, 1869) Rich forest soil, rare (D,N). Forest, meadows, seashores. Common (D,Fi,N,S). Ceratophysella scotica (Carpenter & Evans, 1899) Damp habitats, most common in mountains (D,Fi,N,S). Hypogastrura tullbergi (Schäffer, 1900) Ceratophysella bengtssoni (Ågren, 1904) Various arctic tundra, often dry (A). Compost and humus-rich soil. Common (D,Fa,Fi,I,N,S). Hypogastrura concolor (Carpenter, 1900) Ceratophysella denticulata (Bagnall, 1941) Various arctic tundra, often humid (A). Humid habitats, rich soil. Very common (D,Fa,Fi,I,N,S). Hypogastrura sensilis (Folsom, 1919) Ceratophysella engadinensis (Gisin, 1949) Wet arctic habitats, seashores. Rare (A). Various soils. Rare (D,Fa,Fi). Hypogastrura litoralis (Linnaniemi, 1907) Ceratophysella succinea Gisin, 1949 Wet habitats, seashores. Scattered records (D,Fi,S). Various soils, mostly seashores. Widely distributed Hypogastrura viatica (Tullberg, 1872) (A,Fi,I,N,S). Marine littoral, often abundant in wrack beds Ceratophysella gibbosa (Bagnall, 1940) (A,D,Fa,Fi,I,N,S). Compost, introduced species. Rare (N). Hypogastrura arctandria Fjellberg, 1988 Wrack on sandy beaches. West coast (I,N). Schaefferia willemi (Bonet, 1930) Hypogastrura assimilis Krausbauer, 1898 Rich forest soil, rotten wood, gardens. Scattered records (N). Meadows and grasslands, often manured (D,Fi,I,N,S). Hypogastrura neglecta (Börner, 1901) Bonetogastrura variabilis Christiansen, 1951 Humus rich soil, gardens. Rare (Fi,S). Hypogastrura serrata (Ågren, 1904) Arctic birdcliffs (A). Humus rich soil, compost. Rare (Fa,I,S). Bonetogastrura nivalis (Martynova, 1973) Hypogastrura gisini Strenzke, 1954 Arctic tundra, rich soil (A). 2 Mesogastrura libyca (Caroli, 1914) Sandy seashores. Scattered records (D,I,N,S). Soil & litter. Rare, introduced (S). Friesea danica Fjelberg, 1998 Sand dunes alond seashores, rare (D) Mesachorutes quadriocellatus Absolon, 1900 Friesea quinquespinosa Wahlgren, 1900 Bird nest in hollow tree, rare (D). Rich tundra sites, bird cliffs (A) Friesea sublimis Macnamara, 1921 Xenylla humicola (Fabricius, 1780) Compost, introduced (N). Rich organic soils, mostly seashores (A,D,Fa,Fi,I,N,S). Xenylla mucronata Axelson, 1903 Pseudachorutella asigillata (Börner, 1901) Coniferous forest litter, boreal (Fi,S) Forest litter, under bark. Scattered records (D,Fi,N,S). Xenylla boerneri Axelson, 1905 Moss on trees and rocks, forest litter (D,Fi,N,S). Pseudachorutes dubius Krausbauer, 1898 Xenylla acauda Gisin, 1947 Forest litter, common (D,Fi,N,S). Sandy, dry beach meadows, uncommon (D,N,S). Pseudachorutes subcrassus Tullberg, 1871 Xenylla tullbergi Börner, 1903 Forest litter, common (D,Fi,N,S). Forest litter, meadows, dead trees. Rare (N). Pseudachorutes parvulus Börner, 1901 Xenylla brevicauda Tullberg, 1869 Mostly under bark, dead trees. Common (D,Fi,I,N,S). Coniferous forest litter. Boreal (Fi,N,S). Pseudachorutes boerneri Schött, 1902 Xenylla maritima Tullberg, 1869 Moss/lichens on live trees. Scattered records (N,S). Common in dry, exposed habitats (D,Fi,N,S). Pseudachorutes corticicolus Schäffer, 1896 Xenylla xavieri Gama, 1959 Under bark, also forest litter. Common (D,Fi,N,S). Dry, warm meadows & rocks. Uncommon (D,Fa,N,S). Xenylla mediterranea Gama, 1964 Pratanuriuda cassagnaui Rusek, 1973 Dry meadows, rocks, seashores. Uncommon (D,N,S). Dry beach meadows, rare (S). Xenylla corticalis Börner, 1901 Under bark, dead trees. Widely distributed (Fi,N,S). Micranurida granulata (Agrell, 1943) Xenylla grisea Axelson, 1900 Forest litter, deep soil. Scattered records (D,Fi,N,S). Rich soil, dead trees. (D,Fi,N,S). Micranurida pygmaea (Börner, 1901) Common in various soil types (A,D,Fa,Fi,I,N,S). Willemia anophthalma Börner, 1901 Micranurida balta Fjellberg, 1998 Common in meadows, forest litter, acidic soils Sand dunes, seashores. Rare (D,S). (A,D,Fa,Fi,I,N,S). Micranurida sensillata (Gisin, 1953) Willemia intermedia Mills, 1934 Meadows, forest litter. Rare (D). Meadows, seashores. Scattered records (A,D,Fi,N,S). Micranurida forsslundi Gisin, 1949 Willemia similis Mills, 1934 Acidic soils in forest and heaths. Common (D,Fa,Fi,N,S). Tundra soils. (A,I). Micranurida anophthalmica Stach, 1949 Willemia scandinavica Stach, 1949 Moss on rotten wood. Rare (S). Mostly sandy seashore habitats, also tundra (A,Fa,D,I,N,S). Willemia denisi Mills, 1932 Anuridella marina Willem, 1906 Forest litter. Common (D,Fa,Fi,I,N,S). Marine littoral. Uncommon, west coast (N) Willemia multilobata Gers & Deharveng, 1985 Anuridella submarina Bagnall, 1934 Meadows, rare (D) Marine littoral, interstitial. Uncommon (I,N) Willemia unispina Fjellberg, 2007 Anuridella immsiana Bagnall, 1939 Rich hardwood forest. Rare, west coast. (N) Marine littoral. Rare (I) Anurida ellipsoides Stach, 1949 Brachystomellidae Damp forest habitats, streambanks. Rare (Fi,N,S). Anurida uniformis Gisin, 1953 Brachystomella parvula (Schäffer, 1896) Damp forest, streambanks. Rare (N,S). Damp meadows, sometimes in forests (D,Fi,N,S). Anurida denisi Bagnall, 1939 Under stones in the marine littoral. Rare (N) Anurida maritima (Guérin, 1836) Neanuridae Marine littoral. Common (A,N,S). Anurida granaria (Nicolet, 1847) Friesea mirabilis (Tullberg, 1871) Seashores and stream banks (A,D,Fa,Fi,I,N,S). Common in meadows, forests, seashores (D,Fa,Fi,I, N,S). Anurida thalassophila (Bagnall, 1939) Friesea truncata Cassagnau, 1958 Marine littoral, often uder stones. Common (D,Fa,Fi,I,N,S). Forests, meadows. Common (D,Fa,Fi,I,N,S). Anurida polaris (Hammer, 1954) Friesea claviseta Axelson, 1900 Wet arctic & alpine tundra (A,N,S). Bark on trees, also moss on rocks. Common (D,Fi,I,N,S). Anurida alpina Agrell, 1939 Friesea baltica Szeptycki, 1964 Damp alpine habitats, along streams. Rare (N,S). 3 Anurida tullbergi Schött, 1901 Thalassaphorura debilis (Moniez, 1890) Wetlands along sea and lakes, uncommon (D,Fi,I,N). Common in the marine littoral (A,D,I,N). Thalassaphorura duplopunctata (Strenzke, 1954) Paranura sexpunctata Axelson, 1902 Seashores & bird cliffs, mainly Arctic (A,Fa,I,N,F). Under bark, dead treas. Uncommon, boreal (Fi,N,S). Thalassaphorura halophila (Bagnall, 1935) Marine littoral, wrack beds. Rare (N,S). Deutonura stachi (Gisin, 1952) Thalassaphorura encarpata (Denis, 1931) Rich hardwood forest. Rare (N). Greenhouse, introduced. Rare (N) Neanura muscorum (Templeton, 1835) Protaphorura armata (Tullberg, 1869) Common, various habitats (D,Fa,Fi,I,N,S). Forests and meadows, often in dry habitats (D,Fa,Fi,I,N,S). Neanura reticulata Axelson, 1905 Protaphorura tricampata (Gisin, 1956) Wet habitats. Rare, boreal (Fi,S). Meadows, mostly seashores. Widespread (D,Fa,Fi,I,N,S). Neanura coronifera Axelson, 1905 Protaphorura subuliginata Gisin, 1956 Old records only, identity unclear (Fi). Forest litter, meadow, seashores. Common (D,Fa,Fi,I,N,S). Protaphorura cancellata (Gisin, 1952) Meadows, forest litter. Scattered records (D,I,N,S). Odontellidae Protaphorura boedvarssoni Pomorski, 1993 Forest litter, meadows, lake shores. Few records Xenyllodes armatus Axelson, 1903 (D,Fa,Fi,I,N,S). Protaphorura vanderdrifti Gisin, 1952 Forest litter, streambanks, seashores. Common (D,Fi,I,N,S). Mostly seashores. Few records (D,Fa,I,N,S). Axenyllodes echinatus Fjellberg, 1988 Protaphorura pseudovanderdrifti (Gisin, 1957) Forest litter, meadows. Common in the alpine (D,Fa,Fi,I,N,S). Dry, sandy meadows. Rare (N). Protaphorura humata Gisin, 1952 Pseudostachia populosa (Selga, 1963) Seashores. Rare (N). Protaphorura pannonica Haybach, 1960 Dry, sandy seashore meadows. Rare (D,S). Forest litter, seashores. Few records (D,Fa,Fi,I,S). Odontella lamellifera (Axelson, 1903) Protaphorura procampata (Gisin, 1956) Meadows, forest litter, seashores. Widespread (D,Fa,I,N,S). Under bark, in forest litter. Rare (D,Fi,S). Protaphorura campata (Gisin, 1952) Meadows. Rare (I) Onychiuridae Protaphorura bicampata (Gisin, 1956) Seashores, meadows, often dry. Widesprea (D,Fa,I,N,S). Protaphorura islandica (Bödvarsson, 1959) Archaphorura serratotuberculata (Stach, 1933) Seashore meadows and wrack beds. Uncommon (D,I,N). Forest litter. Scattered records (D,Fi,N). Protaphorura fimata (Gisin, 1952) Compost, seashore debris. Few records (D,Fi,I,N,F). Micraphorura absoloni (Börner, 1901) Protaphorura macfadyeni