This page lists all described species of the spider family Linyphiidae as of July 12, 2020, from I to P, of World Spider Catalog version 21.0
Ibadana
Ibadana Locket & Russell-Smith, 1980
Ibadana cuspidata Locket & Russell-Smith, 1980 – Nigeria, Cameroon
Iberoneta
Iberoneta Deeleman-Reinhold, 1984
Iberoneta nasewoa Deeleman-Reinhold, 1984 – Spain
Icariella
Icariella Brignoli, 1979
Icariella hauseri Brignoli, 1979 – Greece
Idionella
Idionella Banks, 1893
Idionella anomala (Gertsch & Ivie, 1936) – USA
Idionella deserta (Gertsch & Ivie, 1936) – USA
Idionella formosa (Banks, 1892) (type species) – USA
Idionella formosa pista (Chamberlin, 1949) – USA
Idionella nesiotes (Crosby, 1924) – USA
Idionella rugosa (Crosby, 1905) – USA
Idionella sclerata (Ivie & Barrows, 1935) – USA, Mexico
Idionella titivillitium (Crosby & Bishop, 1925) – USA
Idionella tugana (Chamberlin, 1949) – USA
Improphantes
Improphantes Saaristo & Tanasevitch, 1996
Improphantes biconicus (Tanasevitch, 1992) – Russia, Japan
Improphantes breviscapus Tanasevitch, 2013 – Israel
Improphantes complicatus (Emerton, 1882) – Holarctic
Improphantes contus Tanasevitch & Piterkina, 2007 – Kazakhstan
Improphantes cypriot Tanasevitch, 2011 – Cyprus
Improphantes decolor (Westring, 1861) – Europe, North Africa
Improphantes djazairi (Bosmans, 1985) – Algeria
Improphantes falcatus (Bosmans, 1979) – Kenya
Improphantes flexilis (Tanasevitch, 1986) – Russia
Improphantes furcabilis (Wunderlich, 1987) – Canary Islands
Improphantes geniculatus (Kulczynski, 1898) – Europe, Russia
Improphantes holmi (Kronestedt, 1975) – Sweden, Russia
Improphantes huberti (Wunderlich, 1980) – Corsica
Improphantes improbulus (Simon, 1929) (type species) – Palearctic
Improphantes mauensis (Caporiacco, 1949) – Kenya
Improphantes multidentatus (Wunderlich, 1987) – Canary Islands
Improphantes nitidus (Thorell, 1875) – Europe
Improphantes pamiricus (Tanasevitch, 1989) – Tajikistan
Improphantes potanini (Tanasevitch, 1989) – Kyrgyzstan
Improphantes turok Tanasevitch, 2011 – Turkey
Incestophantes
Incestophantes Tanasevitch, 1992
Incestophantes altaicus Tanasevitch, 2000 – Russia
Incestophantes amotus (Tanasevitch, 1990) – Russia, Georgia, Kazakhstan
Incestophantes ancus Tanasevitch, 1996 – Russia
Incestophantes annulatus (Kulczynski, 1882) – Eastern Europe
Incestophantes bonus Tanasevitch, 1996 – Russia
Incestophantes brevilamellus Tanasevitch, 2013 – Russia
Incestophantes camtchadalicus (Tanasevitch, 1988) – Russia
Incestophantes crucifer (Menge, 1866) – Palearctic
Incestophantes cymbialis (Tanasevitch, 1988) – Russia
Incestophantes duplicatus (Emerton, 1913) – USA, Canada, Alaska
Incestophantes frigidus (Simon, 1884) – Europe
Incestophantes incestoides (Tanasevitch & Eskov, 1987) – Russia
Incestophantes incestus (L. Koch, 1879) (type species) – Russia, Mongolia
Incestophantes khakassicus Tanasevitch, 1996 – Russia
Incestophantes kochiellus (Strand, 1900) – Norway, Sweden, Finland, Russia, China Incestophantes kotulai (Kulczynski, 1905) – Central Europe Incestophantes lamprus (Chamberlin, 1920) – USA, Canada Incestophantes laricetorum (Tanasevitch & Eskov, 1987) – Russia Incestophantes logunovi Tanasevitch, 1996 – Russia Incestophantes mercedes (Chamberlin & Ivie, 1943) – USA Incestophantes shetekaurii Otto & Tanasevitch, 2015 Incestophantes tuvensis Tanasevitch, 1996 – Russia Incestophantes washingtoni (Zorsch, 1937) – USA, Canada