Amplimerlinius Siddiqi, 1976 (basis of record)
Amplimerlinius amplus Siddiqi, 1976 (basis of record)
Amplimerlinius clavicaudatus (Choi & Geraert, 1975) Siddiqi, 1976 accepted as Paramerlinius clavicaudatus (Choi & Geraert, 1975) Ghaderi, 2019 (basis of record)
Amplimerlinius ekbali Khan & Singh, 1999 accepted as Paramerlinius ekbali (Khan & Singh, 1999) Sturhan, 2012 (basis of record)
Amplimerlinius globigerus Siddiqi, 1979 (basis of record)
Amplimerlinius hornensis Bello, Mahajan & Zancada, 1987 (basis of record)
Amplimerlinius icarus (Wallace & Greet, 1964) Siddiqi, 1976 (basis of record)
Amplimerlinius intermedius (Bravo, 1976) Siddiqi, 1976 (basis of record)
Amplimerlinius longicauda Castillo, Siddiqi & Gómez-Barcina, 1990 (basis of record)
Amplimerlinius macrurus (Goodey, 1932) Siddiqi, 1976 (basis of record)
Amplimerlinius magnistylus Castillo, Gómez-Barcina, Vovlas & Navas, 1991 (basis of record)
Amplimerlinius nectolineatus Siddiqi, 1976 (basis of record)
Amplimerlinius omentelus Kleynhans & Heyns, 1983 (basis of record)
Amplimerlinius paraglobigerus Castillo, Siddiqi & Gómez-Barcina, 1990 (basis of record)
Amplimerlinius parbati Zarina & Maqbool, 1990 (basis of record)
Amplimerlinius planitierus (Eroshenko, 1984) Eroshenko & Volkova, 1988 (basis of record)
Amplimerlinius quercinus Mahajan, 1996 (basis of record)
Amplimerlinius siddiqii Mancini, Cotroneo & Moretti, 1982 (basis of record)
Amplimerlinius sikkimensis Shaw & Khan, 1992 (basis of record)
Amplimerlinius socialis (Andrássy, 1962) Siddiqi, 1976 (basis of record)
Amplimerlinius truncatus (Poghossian, 1979) Gerlach, 2011 (basis of record)
Amplimerlinius umbonatus Ivanova, 1982 (basis of record)
Amplimerlinius viciae (Saltukoglu, 1973) Siddiqi, 1976 (basis of record)
Belonolaiminae Whitehead, 1960 (basis of record)
Belonolaimus Steiner, 1949 (basis of record)
Belonolaimus euthichylus Rau, 1963 (basis of record)
Belonolaimus gracilis Steiner, 1949 (basis of record)
Belonolaimus longicaudatus Rau, 1958 (basis of record)
Belonolaimus maritimus Rau, 1963 (basis of record)
Belonolaimus nortoni Rau, 1963 (basis of record)
Brachydorinae Siddiqi, 2000 (basis of record)
Brachydorus de Guiran & Germani, 1968 (basis of record)
Brachydorus kazirangai Rahaman, Ahmad, Khan & Ahmad, 1992 (basis of record)
Brachydorus swarupi Koshy, Raski & Sosamma, 1981 (basis of record)
Brachydorus tenuis de Guiran & Germani, 1968 (basis of record)
Carphodorus Colbran, 1965 (basis of record)
Carphodorus bilineatus Colbran, 1965 (basis of record)
Dolichodoridae Chitwood in Chitwood & Chitwood, 1950 (basis of record)
Dolichodorinae Chitwood in Chitwood & Chitwood, 1950 (basis of record)
Dolichodorus Cobb, 1914 (basis of record)
Dolichodorus aestuarius Chow & Taylor, 1978 (basis of record)
Dolichodorus aquaticus Doucet, 1985 (basis of record)
Dolichodorus cobbi Golden, Handoo & Wehunt, 1986 (basis of record)
Dolichodorus grandaspicatus Robbins, 1982 (basis of record)
Dolichodorus heterocephalus Cobb, 1914 (basis of record)
Dolichodorus kishansinghi Jairajpuri & Rahmani, 1979 (basis of record)
Dolichodorus longicaudatus Doucet, 1981 (basis of record)
Dolichodorus marylandicus Lewis & Golden, 1981 (basis of record)
Dolichodorus mediterraneus Jimenez Guirado, Murillo Navarro, Liebanas, Landa & Castillo, 2007 (basis of record)
Dolichodorus minor Loof & Sharma, 1975 (basis of record)
Dolichodorus miradvulvus Smart & Khuong, 1985 (basis of record)
Dolichodorus nigeriensis Luc & Caveness, 1963 (basis of record)
Dolichodorus pellegrini Germani, 1990 (basis of record)
Dolichodorus profundus Luc, 1960 (basis of record)
Dolichodorus pulvinus Khan, Seshadri, Weischer & Mathen, 1971 (basis of record)
Dolichodorus silvestris Gillespie & Adams, 1962 (basis of record)
Dolichodorus similis Golden, 1958 (basis of record)
Geocenamus Thorne & Malek, 1968 (basis of record)
Geocenamus acuminatus (Minagawa, 1985) Brzeski, 1991 accepted as Merlinius acuminatus Minagawa, 1985 (basis of record)
Geocenamus adakensis (Bernard, 1984) Brzeski, 1991 accepted as Paramerlinius adakensis (Bernard, 1984) Sturhan, 2012 (basis of record)
Geocenamus alboranensis (Tobar-Jiménez, 1970) Brzeski, 1991 accepted as Merlinius alboranensis (Tobar-Jiménez, 1970) Tarjan, 1973 (basis of record)
Geocenamus angelescresti Chitambar & Ferris, 2005 (basis of record)
Geocenamus arcticus (Mulvey, 1969) Tarjan, 1973 (basis of record)
Geocenamus arealoferus (Razzhivin, 1971) Fortuner & Luc, 1987 (basis of record)
Geocenamus baluchiensis (Maqbool, Ghazala, Fatima & Qasim, 1985) Brzeski, 1991 accepted as Scutylenchus baluchiensis Maqbool, Ghazala, Fatima & Qasim, 1985 (basis of record)
Geocenamus bavaricus (Sturhan, 1966) Brzeski, 1991 accepted as Merlinius bavaricus (Sturhan, 1966) Siddiqi, 1970 (basis of record)
Geocenamus bijnorensis (Khan, 1971) Brzeski, 1992 accepted as Merlinius bijnorensis Khan, 1971 (basis of record)
Geocenamus bilqeesae (Khan & Khan, 1995) Geraert, 2011 (basis of record)
Geocenamus bogdanovikatjkovi (Kirjanova, 1941) Siddiqi, 2011 accepted as Merlinius bogdanovikatjkovi (Kirjanova, 1941) Siddiqi, 1970 (basis of record)
Geocenamus boghiae Choi & Geraert, 1994 accepted as Scutylenchus boghiae (Choi & Geraert, 1994) Siddiqi, 2000 (basis of record)
Geocenamus brevicaudatus (Peng & Hunt, 1995) Brzeski, 1998 accepted as Scutylenchus brevicaudatus Peng & Hunt, 1995 (basis of record)
Geocenamus brevidens (Allen, 1955) Brzeski, 1991 (basis of record)
Geocenamus capitonis (Ivanova, 1983) Brzeski, 1991 accepted as Merlinius capitonis Ivanova, 1983 (basis of record)
Geocenamus circellus (Anderson & Ebsary, 1982) Brzeski, 1991 accepted as Merlinius circellus Anderson & Ebsary, 1982 (basis of record)
Geocenamus communicus (Sultan, Singh & Sakhuja, 1989) Brzeski, 1992 accepted as Merlinius communicus Sultan, Singh & Sakhuja, 1989 (basis of record)
Geocenamus deserticola (Ivanova & Shagalina, 1983) Fortuner & Luc, 1987 (basis of record)
Geocenamus dobroticus Budurova, Baicheva & Milkova, 1996 (basis of record)
Geocenamus gatevi (Budurova, 1988) Brzeski, 1991 accepted as Merlinius gatevi Budurova, 1988 (basis of record)
Geocenamus graminicola (Kirjanova, 1951) Geraert, 2011 accepted as Merlinius graminicola (Kirjanova, 1951) Siddiqi, 1976 (basis of record)
Geocenamus hexincisus (Jairajpuri & Baqri, 1968) Brzeski, 1991 accepted as Scutylenchus hexincisus (Jairajpuri & Baqri, 1968) Siddiqi, 1979 (basis of record)
Geocenamus indicus (Zarina & Maqbool, 1955) Brzeski, 1998 accepted as Merlinius indicus Zarina & Maqbool, 1955 (basis of record)
Geocenamus joctus (Thorne, 1949) Brzeski, 1991 accepted as Merlinius joctus (Thorne, 1949) Sher, 1974 (basis of record)
Geocenamus khashanicus Volkova, 1995 (basis of record)
Geocenamus khuzdarensis (Handoo, Khan & Islam, 2007) Gerlach, 2011 accepted as Merlinius khuzdarensis Handoo, Khan & Islam, 2007 (basis of record)
Geocenamus kirjanovae (Sagitov, 1973) Fortuner & Luc, 1987 (basis of record)
Geocenamus koreanus (Choi & Geraert, 1971) Brzeski, 1991 accepted as Scutylenchus koreanus (Choi & Geraert, 1971) Siddiqi, 1979 (basis of record)
Geocenamus laminatus (Wu, 1969) Brzeski, 1991 accepted as Scutylenchus laminatus (Wu, 1969) Anderson & Ebsary, 1982 (basis of record)
Geocenamus lenorus (Brown, 1956) Brzeski, 1991 accepted as Scutylenchus lenorus (Brown, 1956) Siddiqi, 1979 (basis of record)
Geocenamus longus (Wu, 1969) Tarjan, 1973 accepted as Scutylenchus longus (Wu, 1969) Skwiercz, 1984 (basis of record)
Geocenamus loofi (Siddiqi, 1979) Brzeski, 1991 (basis of record)
Geocenamus mamillatus (Tobar-Jiménez, 1966) Brzeski, 1991 accepted as Scutylenchus mamillatus (Tobar-Jiménez, 1966) Jairajpuri, 1971 (basis of record)
Geocenamus microdorus (Geraert, 1966) Brzeski, 1991 accepted as Merlinius microdorus (Geraert, 1966) Siddiqi, 1970 (basis of record)
Geocenamus mollicephalus (Eroshenko & Volkova, 1988) Brzeski, 1998 accepted as Merlinius mollicephalus Eroshenko & Volkova, 1988 (basis of record)
Geocenamus montanus (Maqbool & Shahina, 1987) Brzeski, 1992 accepted as Merlinius montanus Maqbool & Shahina, 1987 (basis of record)
Geocenamus myungsugae Choi & Geraert, 1994 accepted as Scutylenchus myungsugae (Choi & Geraert, 1994) Siddiqi, 2000 (basis of record)
Geocenamus nanus (Allen, 1955) Brzeski, 1991 accepted as Merlinius nanus (Allen, 1955) Siddiqi, 1970 (basis of record)
Geocenamus niazae (Maqbool, Fatima & Hashmi, 1983) Brzeski, 1991 accepted as Merlinius niazae Maqbool, Fatima & Hashmi, 1983 (basis of record)
Geocenamus nothus (Allen, 1955) Brzeski, 1991 accepted as Merlinius nothus (Allen, 1955) Siddiqi, 1970 (basis of record)
Geocenamus nurserus (Eroshenko & Volkova, 1987) Fortuner & Luc, 1990 (basis of record)
Geocenamus ordinarius Volkova, 1993 accepted as Scutylenchus ordinarius (Volkova, 1993) Hosseinvand, Eskandari, Azizi, Palomares-Rius, Castillo, Abolafia, Ghaderi, Helder & Qing, 202 (basis of record)