List of nematode families

List of Nematoda has 25,000 recorded species from the Nematode phylum. There are estimated to be a million.

Class Chromadorea
Subclass Chromadoria
 * Order Araeolaimida
 * Superfamily Axonolaimoidea Filipjev, 1918
 * Axonolaimidae Filipjev, 1918
 * Bodonematidae Jensen, 1991
 * Comesomatidae Filipjev, 1918
 * Coninckiidae Lorenzen, 1981
 * Diplopeltidae Filipjev, 1918
 * Order Ascaridida
 * Order Chromadorida
 * Suborder Chromadorina
 * Superfamily Chromadoroidea Filipjev, 1917
 * Achromadoridae Gerlach & Riemann, 1973
 * Chromadoridae Filipjev, 1917
 * Cyatholaimidae Filipjev, 1918
 * Ethmolaimidae Filipjev & Schuurmans Stekhoven, 1941
 * Neotonchidae Wieser & Hopper, 1966
 * Selachinematidae Cobb, 1915
 * Order Desmodorida
 * Suborder Desmodorina
 * Superfamily Desmodoroidea Filipjev, 1922
 * Desmodoridae Filipjev, 1922
 * Draconematidae Filipjev, 1918
 * Epsilonematidae Steiner, 1927
 * Superfamily Microlaimoidea Micoletzky, 1922
 * Aponchiidae Gerlach, 1963
 * Microlaimidae Micoletzky, 1922
 * Monoposthiidae Filipjev, 1934
 * Order Desmoscolecida
 * Suborder Desmoscolecina
 * Superfamily Desmoscolecoidea Shipley, 1896
 * Cyartonematidae Tchesunov, 1990
 * Desmoscolecidae Shipley, 1896
 * †Eophasmidae Poinar, 2011
 * Meyliidae de Coninck, 1965
 * Order Monhysterida
 * Suborder Linhomoeina
 * Superfamily Siphonolaimoidea Filipjev, 1918
 * Fusivermidae Tchesunov, 1996
 * Linhomoeidae Filipjev, 1922
 * Siphonolaimidae Filipjev, 1918
 * Suborder Monhysterina
 * Superfamily Monhysteroidea Filipjev, 1929
 * Monhysteridae de Man, 1876
 * Superfamily Sphaerolaimoidea Filipjev, 1918
 * Sphaerolaimidae Filipjev, 1918
 * Xyalidae Chitwood, 1951
 * Order Plectida
 * Suborder Ceramonematina
 * Superfamily Ceramonematoidea Cobb, 1933
 * Ceramonematidae Cobb, 1933
 * Diplopeltoididae Tchesunov, 1990
 * Paramicrolaimidae Lorenzen, 1981
 * Tarvaiidae Lorenzen, 1981
 * Tubolaimoididae Lorenzen, 1981
 * Incertae sedis
 * Superfamily Haliplectoidea Chitwood, 1951
 * Haliplectidae Chitwood, 1951
 * Aegialoalaimidae Lorenzen, 1981
 * Aulolaimidae Jairajpuri & Hopper, 1968
 * Suborder Plectina
 * Superfamily Camacolaimoidea Micoletzky, 1924
 * Camacolaimidae Micoletzky, 1924
 * Rhadinematidae Lorenzen, 1981
 * Superfamily Leptolaimoidea Örley, 1880
 * Aphanolaimidae Chitwood, 1936
 * Leptolaimidae Örley, 1880
 * Superfamily Ohridioidea (Andrassy, 1976)
 * Creagrocercidae Baylis, 1943
 * Ohridiidae Andrássy, 1976
 * Superfamily Plectoidea Örley, 1880
 * Chronogastridae Gagarin, 1975
 * Metateratocephalidae Eroshenko, 1973
 * Plectidae Örley, 1880
 * Order Rhabditida
 * Incertae sedis
 * Brevibuccidae Paramonov, 1956
 * Chambersiellidae Thorne, 1937
 * Teratocephalidae Andrassy, 1958
 * Suborder Myolaimina
 * Superfamily Myolaimoidea Andrassy, 1958
 * Myolaimidae Andrassy, 1958
 * Suborder Rhabditina
 * Infraorder Bunonematomorpha
 * Superfamily Bunonematoidea Micoletzky, 1922
 * Bunonematidae Micoletzky, 1922
 * Pterygorhabditidae Goodey, 1963
 * Infraorder Diplogasteromorpha
 * Superfamily Cylindrocorporoidea Goodey, 1939
 * Cylindrocorporidae Goodey, 1939
 * Superfamily Diplogasteroidea Micoletzky, 1922
 * Cephalobiidae Filipjev, 1934
 * Diplogasteridae Micoletzky, 1922
 * Diplogasteroididae Filipjev & Schuurmans Stekhoven, 1941
 * Mehdinematidae Farooqui, 1967
 * Neodiplogasteridae Paramonov, 1952
 * Pseudodiplogasteroididae Körner, 1954
 * Superfamily Odontopharyngoidea Micoletzky, 1922
 * Odontopharyngidae Micoletzky, 1922
 * Infraorder Rhabditomorpha
 * Incertae sedis
 * Agfidae Dougherty, 1955
 * Carabonematidae Stammer & Wachek, 1952
 * Superfamily Mesorhabditoidea Andrassy, 1976
 * Mesorhabditidae Andrassy, 1976
 * Peloderidae Andrassy, 1976
 * Superfamily Rhabditoidea Örley, 1880
 * Diploscapteridae Micoletzky, 1922
 * Rhabditidae Örley, 1880
 * Superfamily Strongyloidea Baird, 1853
 * Ancylostomatidae Looss, 1905
 * Diaphanocephalidae Travassos, 1920
 * Heligmosomidae Cram, 1927
 * Heterorhabditidae Poinar, 1976
 * Metastrongylidae Diesing, 1851
 * Moleinidae Durette-Desset & Chabaud, 1977
 * Strongylidae Baird, 1853
 * Trichostrongylidae Leiper, 1912
 * Suborder Spirurina
 * Infraorder Ascaridomorpha
 * Superfamily Ascaridoidea Baird, 1853
 * Acanthocheilidae Wülker, 1929
 * Anisakidae Railliet & Henry, 1912
 * Ascarididae Baird, 1853
 * Heterocheilidae Railliet & Henry, 1915
 * Raphidascarididae Hartwich, 1954
 * Superfamily Cosmocercoidea Travassos, 1925
 * Atractidae Travassos, 1919
 * Cosmocercidae Travassos, 1925
 * Kathlaniidae Travassos, 1918
 * Superfamily Heterakoidea Railliet & Henry, 1912
 * Ascaridiidae Travassos, 1919
 * Aspidoderidae Skrjabin & Shikhobalova, 1947
 * Heterakidae Railliet & Henry, 1912
 * Superfamily Seuratoidea Railliet, 1906
 * Chitwoodchabaudiidae Puylaert, 1970
 * Cucullanidae Cobbold, 1864
 * Quimperiidae Gendre, 1928
 * Schneidernematidae Freitas, 1956
 * Seuratidae Railliet, 1906
 * Superfamily Subuluroidea Yorke & Maplestone, 1926
 * Maupasinidae Inglis, 1959
 * Subuluridae Yorke & Maplestone, 1926
 * Infraorder Gnathostomatomorpha
 * Superfamily Gnathostomatoidea Railliet, 1895
 * Gnathostomatidae Railliet, 1895
 * Incertae sedis
 * Superfamily Dracunculoidea Stiles, 1907
 * Anguillicolidae Yamaguti, 1935
 * Daniconematidae Moravec & Køie, 1987
 * Dracunculidae Stiles, 1907
 * Guyanemidae Petter, 1975
 * Micropleuridae Baylis & Daubney, 1926
 * Philometridae Baylis & Daubney, 1926
 * Skrjabillanidae Shigin & Shigina, 1958
 * Infraorder Oxyuridomorpha
 * Superfamily Oxyuroidea Cobbold, 1864
 * Heteroxynematidae Skrjabin & Shikhobalova, 1948
 * Oxyuridae Cobbold, 1864
 * Pharyngodonidae Travassos, 1919
 * Superfamily Thelastomatoidea Travassos, 1929
 * Hystrignathidae Travassos, 1929
 * Protrelloididae Chitwood, 1932
 * Thelastomatidae Travassos, 1929
 * Travassosinematidae Rao, 1958
 * Infraorder Rhigonematomorpha
 * Superfamily Ransomnematoidea Travassos, 1930
 * Camoyidae Travassos & Kloss, 1960
 * Hethidae Travassos & Kloss, 1960
 * Ransomnematidae Travassos, 1930
 * Superfamily Rhigonematoidea Artigas, 1930
 * Ichthyocephalidae Travassos & Kloss, 1958
 * Rhigonematidae Artigas, 1930
 * Infraorder Spiruromorpha
 * Superfamily Acuarioidea Railliet, Henry & Sisoff, 1912
 * Acuariidae Railliet, Henry & Sisoff, 1912
 * Superfamily Aproctoidea Skrjabin & Shikhobalova, 1945
 * Aproctidae Skrjabin & Shikhobalova, 1945
 * Desmidocercidae Cram, 1927
 * Superfamily Camallanoidea Travassos, 1920
 * Camallanidae Railliet & Henry, 1915
 * Superfamily Diplotriaenoidea Anderson, 1958
 * Diplotriaenidae Anderson, 1958
 * Oswaldofilariidae Chabaud & Choquet, 1953
 * Superfamily Filarioidea Chabaud & Anderson, 1959
 * Filariidae Chabaud & Anderson, 1959
 * Onchocercidae Leiper, 1911
 * Superfamily Habronematoidea Ivaschkin, 1961
 * Cystidicolidae Skrjabin, 1946
 * Habronematidae Ivaschkin, 1961
 * Hedruridae Railliet, 1916
 * Tetrameridae Travassos, 1914
 * Superfamily Physalopteroidea Railliet, 1893
 * Physalopteridae Railliet, 1893
 * Superfamily Rictularoidea Railliet, 1916
 * Rictulariidae Railliet, 1916
 * Superfamily Spiruroidea Oerley, 1885
 * Gongylonematidae Sobolev, 1949
 * Hartertiidae Quentin, 1970
 * Spirocercidae Chitwood & Wehr, 1932
 * Spiruridae Oerley, 1885
 * Superfamily Thelazioidea Skrjabin, 1915
 * Pneumospiruridae Wu & Hu, 1938
 * Rhabdochonidae Skrjabin, 1946
 * Thelaziidae Skrjabin, 1915
 * Suborder Tylenchina
 * Infraorder Cephalobomorpha
 * Superfamily Cephaloboidea Filipjev, 1934
 * Alirhabditidae Suryawanshi, 1971
 * Bicirronematidae Andrassy, 1978
 * Cephalobidae Filipjev, 1934
 * Elaphonematidae Heyns, 1962
 * Osstellidae Heyns, 1962
 * Infraorder Drilonematomorpha
 * Superfamily Drilonematoidea Pierantoni, 1916
 * Drilonematidae Pierantoni, 1916
 * Homungellidae Timm, 1966
 * Pharyngonematidae Chitwood, 1950
 * Ungellidae Chitwood, 1950
 * Incertae sedis
 * Superfamily Anguinoidea Nicoll, 1935
 * Infraorder Panagrolaimomorpha
 * Superfamily Panagrolaimoidea Thorne, 1937
 * Panagrolaimidae Thorne, 1937
 * Superfamily Strongyloidoidea Chitwood & McIntosh, 1934
 * Alloionematidae Chitwood & McIntosh, 1934
 * Rhabdiasidae Railliet, 1916
 * Steinernematidae Filipjev, 1934
 * Strongyloididae Chitwood & McIntosh, 1934
 * Infraorder Tylenchomorpha
 * Superfamily Aphelenchoidea Fuchs, 1937
 * Aphelenchidae Fuchs, 1937
 * Aphelenchoididae Skarbilovich, 1947
 * Superfamily Criconematoidea Taylor, 1936
 * Criconematidae Taylor, 1936
 * Hemicycliophoridae Skarbilovich, 1959
 * Tylenchulidae Skarbilovich, 1947
 * Superfamily Myenchoidea Pereira, 1931
 * Myenchidae Pereira, 1931
 * Superfamily Sphaerularioidea Lubbock, 1861
 * Anguinidae Nicoll, 1935
 * Iotonchidae Goodey, 1935
 * Neotylenchidae Thorne, 1941
 * Sphaerulariidae Lubbock, 1861
 * Superfamily Tylenchoidea Örley, 1880
 * Belonolaimidae Whitehead, 1959
 * Dolichodoridae Chitwood, 1950
 * Hoplolaimidae Filipjev, 1934
 * Meloidogynidae Skarbilovich, 1959
 * Pratylenchidae Thorne, 1949
 * Tylenchidae Örley, 1880
 * Order Spirurida
 * Suborder Camallanina
 * Order Strongylida
 * Superfamily Metastrongyloidea Lane, 1917
 * Pseudaliidae Railliet & Henry, 1909
 * Superfamily Trichostrongyloidea (Durette-Desset, 1985)
 * Amidostomatidae Baylis & Daubney, 1926

Subclass Dorylaimia

 * Order Dioctophymatida
 * Suborder Dioctophymatina
 * Dioctophymidae Railliet, 1915
 * Soboliphymatidae Petrov, 1930
 * Order Dorylaimida
 * Suborder Dorylaimina
 * Superfamily Belondiroidea Thorne, 1964
 * Belondiridae Thorne, 1939
 * Superfamily Dorylaimoidea de Man, 1876
 * Actinolaimidae Thorne, 1939
 * Aporcelaimidae Heyns, 1965
 * Dorylaimidae de Man, 1876
 * Longidoridae Thorne, 1935
 * Nordiidae Jairajpuri & Siddiqi, 1964
 * Qudsianematidae Jairajpuri, 1965
 * Incertae sedis
 * Thornenematidae Siddiqi, 1969
 * Thorniidae de Coninck, 1965
 * Superfamily Tylencholaimoidea Filipjev, 1934
 * Aulolaimoididae Jairajpuri, 1964
 * Leptonchidae Thorne, 1935
 * Mydonomidae Thorne, 1964
 * Tylencholaimellidae Jairajpuri, 1964
 * Tylencholaimidae Filipjev, 1934
 * Suborder Nygolaimina
 * Superfamily Nygolaimoidea Thorne, 1935
 * Aetholaimidae Jairajpuri, 1965
 * Nygellidae Andrassy, 1958
 * Nygolaimellidae Clark, 1961
 * Nygolaimidae Thorne, 1935
 * Order Isolaimida
 * Superfamily Isolaimoidea Timm, 1969
 * Isolaimiidae Cobb, 1920
 * Order Marimermithida
 * Marimermithidae Rubtzov & Platonova, 1974
 * Order Mermithida
 * Suborder Mermithina
 * Superfamily Mermithoidea Braun, 1883
 * Mermithidae Braun, 1883
 * Tetradonematidae Cobb, 1919
 * Order Mononchida
 * Suborder Bathyodontina
 * Superfamily Cryptonchoidea Chitwood, 1937
 * Bathyodontidae Clark, 1961
 * Cryptonchidae Chitwood, 1937
 * Superfamily Mononchuloidea de Coninck, 1965
 * Mononchulidae de Coninck, 1965
 * Suborder Mononchina
 * Superfamily Anatonchoidea Jairajpuri, 1969
 * Anatonchidae Jairajpuri, 1969
 * Incertae sedis
 * Cobbonchidae Jairajpuri, 1969
 * Iotonchidae Jairajpuri, 1969
 * Superfamily Mononchoidea Filipjev, 1934
 * Mononchidae Filipjev, 1934
 * Mylonchulidae Jairajpuri, 1969
 * Order Muspiceida
 * Suborder Muspiceina
 * Muspiceidae Bain & Chabaud, 1959
 * Robertdollfusiidae Chabaud & Campana, 1950
 * Order Trichinellida
 * Superfamily Trichinelloidea Ward, 1907
 * Anatrichosomatidae Yamaguti, 1961
 * Capillariidae Railliet, 1915
 * Cystoopsidae Skrjabin, 1923
 * Trichinellidae Ward, 1907
 * Trichosomoididae Yorke & Maplestone, 1926
 * Trichuridae Railliet, 1915

Subclass Enoplia

 * Order Enoplida
 * Suborder Alaimina
 * Superfamily Alaimoidea Micoletzky, 1922
 * Alaimidae Micoletzky, 1922
 * Suborder Campydorina
 * Superfamily Campydoroidea Jairajpuri, 1976
 * Campydoridae (Thorne, 1935)
 * Suborder Dioctophymina
 * Suborder Enoplina
 * Superfamily Enoploidea Dujardin, 1845
 * Anoplostomatidae Gerlach & Riemann, 1974
 * Anticomidae Filipjev, 1918
 * Enoplidae Dujardin, 1845
 * Phanodermatidae Filipjev, 1927
 * Thoracostomopsidae Filipjev, 1927
 * Incertae sedis
 * Andrassyidae Tchesunov & Gagarin, 1999
 * Suborder Ironina
 * Superfamily Ironoidea de Man, 1876
 * Ironidae de Man, 1876
 * Leptosomatidae Filipjev, 1916
 * Oxystominidae Chitwood, 1935
 * Suborder Oncholaimina
 * Superfamily Oncholaimoidea Filipjev, 1916
 * Enchelidiidae Filipjev, 1918
 * Oncholaimidae Filipjev, 1916
 * Thalassogeneridae Orton Williams & Jairajpuri, 1984
 * Suborder Trefusiina
 * Superfamily Trefusioidea Gerlach, 1966
 * Lauratonematidae Gerlach, 1953
 * Simpliconematidae Blome & Schrage, 1985
 * Trefusiidae Gerlach, 1966
 * Trischistomatidae Andrassy, 2007
 * Xenellidae de Coninck, 1965
 * Suborder Trichinellina
 * Suborder Tripyloidina
 * Superfamily Tripyloidoidea Filipjev, 1928
 * Tripyloididae Filipjev, 1918
 * Order Triplonchida
 * Suborder Diphtherophorina
 * Superfamily Diphtherophoroidea Micoletzkyi, 1922
 * Diphtherophoridae Micoletzky, 1922
 * Trichodoridae Thorne, 1935
 * Incertae sedis
 * Bastianiidae de Coninck, 1965
 * Odontolaimidae Gerlach & Riemann, 1974
 * Suborder Tobrilina
 * Superfamily Prismatolaimoidea Micoletzky, 1922
 * Prismatolaimidae Micoletzky, 1922
 * Superfamily Tobriloidea Filipjev, 1918
 * Pandolaimidae Belogurov, 1980
 * Rhabdodemaniidae Filipjev, 1934
 * Tobrilidae de Coninck, 1965
 * Triodontolaimidae de Coninck, 1965
 * Suborder Tripylina
 * Superfamily Tripyloidea de Man, 1876
 * Tripyloidea de Man, 1876
 * Tripylidae de Man, 1876

Incertae sedis

 * Order Benthimermithida
 * Benthimermithidae Petter, 1980
 * Order Rhaptothyreida
 * Rhaptothyreidae Hope & Murphy, 1969

Class Secernentea

 * Order Camallanida (sometimes included in Spirurida)
 * Family Anguillicolidae
 * Family Camallanidae
 * Family Dracunculidae
 * Family Micropleudidae
 * Family Philometridae
 * Order Drilonematida (sometimes included in Spirurida)
 * Order Oxyurida (= Rhabdiasida)
 * Family Heteroxynematidae
 * Family Oxyuridae
 * Family Pharyngodonidae
 * Family Thelastomatidae
 * Order Rhigonematida (formerly in Tylenchia)
 * Order Spirurida
 * Superfamily Acuarioidea
 * Superfamily Aproctoidea
 * Superfamily Diplotriaenoidea
 * Superfamily Filarioidea
 * Superfamily Gnathostomatoidea
 * Superfamily Habronematoidea
 * Superfamily Physalopteroidea
 * Superfamily Rictularioidea
 * Superfamily Spiruroidea
 * Superfamily Thelazioidea

Subclass Diplogasteria
(may belong in Rhabditia)
 * Order Diplogasterida
 * Suborder Chambersiellina Hodda 2007
 * Superfamily Chambersielloidea Thorne 1937
 * Family Chambersiellidae Thorne 1937 (Sanwal 1957)
 * Suborder Diplogasterina Paramonov 1952
 * Superfamily Cylindrocorporoidea T. Goodey 1939
 * Family Cylindrocorporidae T. Goodey 1939
 * Family Odontopharyngidae Micoletzky 1922
 * Superfamily Diplogasteroidea Micoletzky 1922
 * Family Cephalobiidae Travassos & Kloss 1960a
 * Family Diplogasteridae Micoletzky 1922
 * Family Diplogasteroididae Paramonov 1952
 * Family Neodiplogasteridae Paramonov 1952
 * Family Pseudodiplogasteroididae De Ley & Blaxter 2002
 * Family Tylopharyngidae Filipjev 1918
 * Suborder Myolaimina Inglis 1983
 * Superfamily Carabonematoidea Stammer & Wachek 1952
 * Family Carabonematidae Stammer & Wachek 1952
 * Superfamily Myolaimoidea Goodey 1963
 * Family Myolaimidae Goodey 1963

Subclass Tylenchia
(may belong in Rhabditia)
 * Order Aphelenchida
 * Family Aphelenchidae
 * Family Aphelenchoididae
 * Family Myenchildae
 * Family Paraphelenchidae
 * Order Tylenchida
 * Superfamily Criconematoidea
 * Family Criconematidae
 * Family Tylenchulidae
 * Superfamily Tylenchoidea
 * Family Anguinidae
 * Family Belonolaimidae
 * Family Dolichodoridae
 * Family Ecphyadophoridae
 * Family Hoplolaimidae
 * Family Heteroderidae
 * Family Pratylenchidae
 * Family Tylenchidae
 * Superfamily Sphaerularina
 * Family Allantonematidae
 * Family Fergusobiidae
 * Family Iotonchiidae
 * Family Parasitylenchidae
 * Family Sphaerulariidae