Acanthonchus rostratus Wieser, 1959 represented as Acanthonchus (Seuratiella) rostratus Wieser, 1959 (basis of record)
Acanthonchus setoi Wieser, 1955 represented as Acanthonchus (Acanthonchus) setoi Wieser, 1955 (basis of record)
Acanthopharyngoides Chitwood, 1936 (additional source)
Acanthopharyngoides bidentatus Jensen, 1985 (basis of record)
Acanthopharyngoides chitwoodi Wieser, 1954 (basis of record)
Acanthopharyngoides duplex Gerlach, 1963 (basis of record)
Acanthopharyngoides quintus Riemann & Schrage, 1977 (basis of record)
Acanthopharyngoides scleratus Chitwood, 1936 (basis of record)
Acanthopharyngoides tyrrhenicus Wieser, 1954 (additional source)
Acanthopharynx affinis Marion, 1870 (additional source)
Acanthopharynx denticulatus Wieser, 1954 (basis of record)
Acanthopharynx japonica Steiner & Hoeppli, 1926 (basis of record)
Acanthopharynx micans (Eberth, 1863) Marion, 1870 (additional source)
Acanthopharynx micramphis Schuurmans Stekhoven, 1942 (additional source)
Acanthopharynx nuda (Cobb, 1920) Gerlach, 1963 (basis of record)
Acanthopharynx perarmata Marion, 1870 (additional source)
Acanthopharynx rigida Schuurmans Stekhoven, 1950 (additional source)
Achromadora buikensis (Steiner, 1921) Micoletzky, 1925 accepted as Achromadora micoletzkyi (Stefanski, 1915) Micoletzky, 1925 (basis of record)
Achromadora inermis Altherr, 1952 (basis of record)
Achromadora longicauda Schneider, 1937 (basis of record)
Achromadora longiseta Schuurmans Stekhoven, 1951 (basis of record)
Achromadora micoletzkyi (Stefanski, 1915) Micoletzky, 1925 (basis of record)
Achromadora pseudomicoletzkyi Van der Linde, 1938 (additional source)
Achromadora ruricola (De Man, 1880) Micoletzky, 1924 (basis of record)
Achromadora semiarmata Altherr, 1952 (basis of record)
Achromadora subdubia Gagarin, 1971 (basis of record)
Achromadora tenax (de Man, 1876) Micoletzky, 1925 (basis of record)
Achromadora tenera (Schneider, 1925) Micoletzky, 1925 (basis of record)
Achromadoridae Gerlach & Riemann, 1973 (basis of record)
Achromadorinae Gerlach & Riemann, 1973 (basis of record)
Actinonema Cobb, 1920 (additional source)
Actinonema celtica Boucher, 1976 (additional source)
Actinonema fidatum Vitiello, 1970 (additional source)
Actinonema grafi Jensen, 1991 (basis of record)
Actinonema longicaudatum (Steiner, 1918) Wieser, 1954 (additional source)
Actinonema pachydermatum Cobb, 1920 (additional source)
Adelphos rolandi Ott, 1997 (basis of record)
Adoncholaiminae Gerlach & Riemann, 1974 (additional source)
Adorus astridae Jensen, 1979 (basis of record)
Adorus tenuis Cobb in Thorne, 1939 (basis of record)
Aegialoalaimidae Lorenzen, 1981 (additional source)
Aegialoalaimus de Man, 1907 (additional source)
Aegialoalaimus elegans de Man, 1907 (additional source)
Aegialoalaimus setosa Bouwman, 1981 (basis of record)
Aegialoalaimus tenuicaudatus Allgén, 1932 (additional source)
Africanema interstitialis Vincx & Furstenberg, 1988 (basis of record)
Africanthion nudum Inglis, 1964 (basis of record)
Akanthepsilonema Gourbault & Decraemer, 1991 (basis of record)
Alaimella Cobb, 1920 (additional source)
Alaimella cincta Cobb, 1920 (additional source)
Alaimella truncata Cobb, 1920 (basis of record)
Alaimidae Micoletzky, 1922 (additional source)
Alaimus aculeatus Andrássy, 1968 (basis of record)
Alaimus acutus Thorne, 1939 (basis of record)
Alaimus andrassyi Sabova, 1967 (basis of record)
Alaimus arcuatus Thorne, 1939 (basis of record)
Alaimus depressus Loof, 1971 (basis of record)
Alaimus editorus Siddiqi & Husain, 1967 (basis of record)
Alaimus elongatus de Man, 1907 (basis of record)
Alaimus filiformis Daday, 1898 (basis of record)
Alaimus glissus Thorne, 1939 (basis of record)
Alaimus hamulus Siddiqi & Husain, 1967 (basis of record)
Alaimus himatangiensis Yeates, 1967 (basis of record)
Alaimus jaulasali Siddiqi & Husain, 1967 (basis of record)
Alaimus leptus Siddiqi & Husain, 1967 (basis of record)
Alaimus medius Siddiqi & Husain, 1967 (basis of record)
Alaimus meyli Andrássy, 1961 (basis of record)
Alaimus minor Cobb, 1893 (basis of record)
Alaimus modestus Schuurmans Stekhoven & Teunissen, 1938 (basis of record)
Alaimus mucronatus Altherr, 1950 (basis of record)
Alaimus multipapillatus Wu & Hoeppli, 1929 (basis of record)
Alaimus parvus Thorne, 1939 (basis of record)
Alaimus primitivus de Man, 1880 (basis of record)
Alaimus proximus Thorne, 1939 (basis of record)
Alaimus siddiqii Chaturvedi & Khera, 1979 (basis of record)
Alaimus similis Thorne, 1939 (basis of record)
Alaimus simplex Cobb, 1911 (basis of record)
Alaimus striatus Loof, 1964 (basis of record)
Alaimus tenuis Thorne, 1939 (basis of record)
Alaimus thamugadi Maupas, 1900 (basis of record)
Alaimus thrixus Siddiqi & Husain, 1967 (basis of record)
Amphidelus Thorne, 1939 (additional source)
Amphidelus boa Andrássy, 1968 (basis of record)
Amphidelus bryophilus (Andrássy, 1952) Andrássy, 1961 (basis of record)
Amphidelus coronatus Andrássy, 1957 (basis of record)
Amphidelus dudichi Andrássy, 1957 (basis of record)
Amphidelus effilatus Schuurmans Stekhoven, 1951 (basis of record)
Amphidelus elegans (de Man, 1921) Thorne, 1939 (basis of record)
Amphidelus eremitus Thorne, 1939 (basis of record)
Amphidelus latus Thorne, 1939 (basis of record)
Amphidelus lissus Thorne, 1939 (basis of record)
Amphidelus novus Baqri & Jairaipuri, 1968 (basis of record)
Amphidelus stefanskii Juget, 1969 (basis of record)
Amphimonhystera Allgén, 1929 (additional source)
Amphimonhystera anechma (Southern, 1914) Lorenzen, 1977 (additional source)
Amphimonhystrella megastoma Timm, 1961 (basis of record)
Amphimonhystrella unita Lorenzen, 1977 (basis of record)
Anaplectus granulosus (Bastian, 1865) De Coninck & Schuurmans Stekhoven, 1933 (basis of record)
Anaplectus magnus Brzeski, 1963 (basis of record)
Anaplectus porosus Allen & Noffsinger, 1968 (basis of record)