Amplimerlinius Siddiqi, 1976 (taxonomy source)
Amplimerlinius clavicaudatus (Choi & Geraert, 1975) Siddiqi, 1976 accepted as Paramerlinius clavicaudatus (Choi & Geraert, 1975) Ghaderi, 2019 (taxonomy source)
Geocenamus acuminatus (Minagawa, 1985) Brzeski, 1991 accepted as Merlinius acuminatus Minagawa, 1985 (taxonomy source)
Geocenamus adakensis (Bernard, 1984) Brzeski, 1991 accepted as Paramerlinius adakensis (Bernard, 1984) Sturhan, 2012 (taxonomy source)
Geocenamus alboranensis (Tobar-Jiménez, 1970) Brzeski, 1991 accepted as Merlinius alboranensis (Tobar-Jiménez, 1970) Tarjan, 1973 (taxonomy source)
Geocenamus baluchiensis (Maqbool, Ghazala, Fatima & Qasim, 1985) Brzeski, 1991 accepted as Scutylenchus baluchiensis Maqbool, Ghazala, Fatima & Qasim, 1985 (taxonomy source)
Geocenamus bavaricus (Sturhan, 1966) Brzeski, 1991 accepted as Merlinius bavaricus (Sturhan, 1966) Siddiqi, 1970 (taxonomy source)
Geocenamus bijnorensis (Khan, 1971) Brzeski, 1992 accepted as Merlinius bijnorensis Khan, 1971 (taxonomy source)
Geocenamus bogdanovikatjkovi (Kirjanova, 1941) Siddiqi, 2011 accepted as Merlinius bogdanovikatjkovi (Kirjanova, 1941) Siddiqi, 1970 (taxonomy source)
Geocenamus boghiae Choi & Geraert, 1994 accepted as Scutylenchus boghiae (Choi & Geraert, 1994) Siddiqi, 2000 (taxonomy source)
Geocenamus brevicaudatus (Peng & Hunt, 1995) Brzeski, 1998 accepted as Scutylenchus brevicaudatus Peng & Hunt, 1995 (taxonomy source)
Geocenamus capitonis (Ivanova, 1983) Brzeski, 1991 accepted as Merlinius capitonis Ivanova, 1983 (taxonomy source)
Geocenamus circellus (Anderson & Ebsary, 1982) Brzeski, 1991 accepted as Merlinius circellus Anderson & Ebsary, 1982 (taxonomy source)
Geocenamus communicus (Sultan, Singh & Sakhuja, 1989) Brzeski, 1992 accepted as Merlinius communicus Sultan, Singh & Sakhuja, 1989 (taxonomy source)
Geocenamus conicaudatus Ghaderi & Karegar, 2016 accepted as Scutylenchus conicaudatus (Ghaderi & Karegar, 2016) Hosseinvand, Eskandari, Azizi, Palomares-Rius, Castillo, Abolafia, Ghaderi, Helder & Qing, 2023 (taxonomy source)
Geocenamus gatevi (Budurova, 1988) Brzeski, 1991 accepted as Merlinius gatevi Budurova, 1988 (taxonomy source)
Geocenamus graminicola (Kirjanova, 1951) Geraert, 2011 accepted as Merlinius graminicola (Kirjanova, 1951) Siddiqi, 1976 (taxonomy source)
Geocenamus hexincisus (Jairajpuri & Baqri, 1968) Brzeski, 1991 accepted as Scutylenchus hexincisus (Jairajpuri & Baqri, 1968) Siddiqi, 1979 (taxonomy source)
Geocenamus indicus (Zarina & Maqbool, 1955) Brzeski, 1998 accepted as Merlinius indicus Zarina & Maqbool, 1955 (taxonomy source)
Geocenamus joctus (Thorne, 1949) Brzeski, 1991 accepted as Merlinius joctus (Thorne, 1949) Sher, 1974 (taxonomy source)
Geocenamus khuzdarensis (Handoo, Khan & Islam, 2007) Gerlach, 2011 accepted as Merlinius khuzdarensis Handoo, Khan & Islam, 2007 (taxonomy source)
Geocenamus laminatus (Wu, 1969) Brzeski, 1991 accepted as Scutylenchus laminatus (Wu, 1969) Anderson & Ebsary, 1982 (taxonomy source)
Geocenamus lenorus (Brown, 1956) Brzeski, 1991 accepted as Scutylenchus lenorus (Brown, 1956) Siddiqi, 1979 (taxonomy source)
Geocenamus longus (Wu, 1969) Tarjan, 1973 accepted as Scutylenchus longus (Wu, 1969) Skwiercz, 1984 (taxonomy source)
Geocenamus mamillatus (Tobar-Jiménez, 1966) Brzeski, 1991 accepted as Scutylenchus mamillatus (Tobar-Jiménez, 1966) Jairajpuri, 1971 (taxonomy source)
Geocenamus microdorus (Geraert, 1966) Brzeski, 1991 accepted as Merlinius microdorus (Geraert, 1966) Siddiqi, 1970 (taxonomy source)
Geocenamus mollicephalus (Eroshenko & Volkova, 1988) Brzeski, 1998 accepted as Merlinius mollicephalus Eroshenko & Volkova, 1988 (taxonomy source)
Geocenamus montanus (Maqbool & Shahina, 1987) Brzeski, 1992 accepted as Merlinius montanus Maqbool & Shahina, 1987 (taxonomy source)
Geocenamus myungsugae Choi & Geraert, 1994 accepted as Scutylenchus myungsugae (Choi & Geraert, 1994) Siddiqi, 2000 (taxonomy source)
Geocenamus nanus (Allen, 1955) Brzeski, 1991 accepted as Merlinius nanus (Allen, 1955) Siddiqi, 1970 (taxonomy source)
Geocenamus niazae (Maqbool, Fatima & Hashmi, 1983) Brzeski, 1991 accepted as Merlinius niazae Maqbool, Fatima & Hashmi, 1983 (taxonomy source)
Geocenamus nothus (Allen, 1955) Brzeski, 1991 accepted as Merlinius nothus (Allen, 1955) Siddiqi, 1970 (taxonomy source)
Geocenamus ordinarius Volkova, 1993 accepted as Scutylenchus ordinarius (Volkova, 1993) Hosseinvand, Eskandari, Azizi, Palomares-Rius, Castillo, Abolafia, Ghaderi, Helder & Qing, 202 (taxonomy source)
Geocenamus paniculoides (Vovlas & Esser, 1990) Brzeski, 1998 accepted as Scutylenchus paniculoides (Vovlas & Esser, 1990) Siddiqi, 2000 (taxonomy source)
Geocenamus persici Zhang, Munawar, Castillo, Han & Zheng, 2022 accepted as Scutylenchus persici (Zhang, Munawar, Castillo, Han & Zheng, 2022) Hosseinvand, Eskandari, Azizi, Palomares-Rius, Castillo, Abolafia, Ghaderi, Helder & Qing, 2023 (taxonomy source)
Geocenamus pistaciei (Fatema & Farooq, 1992) Gerlach, 2011 accepted as Merlinius pistaciei Fatema & Farooq, 1992 (taxonomy source)
Geocenamus plerorbus (Anderson & Ebsary, 1982) Brzeski, 1991 accepted as Merlinius plerorbus Anderson & Ebsary, 1982 (taxonomy source)
Geocenamus processus (Siddiqi, 1979) Brzeski, 1991 accepted as Merlinius processus Siddiqi, 1979 (taxonomy source)
Geocenamus productus (Thorne, 1949) Brzeski, 1991 accepted as Merlinius productus (Thorne, 1949) Sher, 1974 (taxonomy source)
Geocenamus pseudobavaricus (Saltukoglu, Geraert & Coomans, 1976) Brzeski, 1991 accepted as Merlinius pseudobavaricus Saltukoglu, Geraert & Coomans, 1976 (taxonomy source)
Geocenamus pyri (Fatema & Farooq, 1992) Geraert, 2011 accepted as Merlinius pyri Fatema & Farooq, 1992 (taxonomy source)
Geocenamus quadrifer (Andrássy, 1954) Brzeski, 1991 accepted as Scutylenchus quadrifer (Andrássy, 1954) Siddiqi, 1979 (taxonomy source)
Geocenamus rugosus (Siddiqi, 1963) Brzeski, 1991 accepted as Scutylenchus rugosus (Siddiqi, 1963) Siddiqi, 1979 (taxonomy source)
Geocenamus seonunensis Choi & Kim, 2001 accepted as Scutylenchus seonunensis (Choi & Kim, 2001) Hosseinvand, Eskandari, Azizi, Palomares-Rius, Castillo, Abolafia, Ghaderi, Helder & Qing, 2023 (taxonomy source)
Geocenamus siddiqii (Mulk, 1978) Brzeski, 1991 accepted as Scutylenchus siddiqii (Mulk, 1978) Skwiercz, 1984 (taxonomy source)
Geocenamus sobolevi (Mukhina, 1970) Brzeski, 1991 accepted as Scutylenchus sobolevi (Mukhina, 1970) Siddiqi, 1979 (taxonomy source)
Geocenamus sphaerocephalus (Ivanova, 1982) Brzeski, 1991 accepted as Scutylenchus sphaerocephalus Ivanova, 1982 (taxonomy source)
Geocenamus squamatus Eroshenko & Volkova, 1988 accepted as Scutylenchus squamatus (Eroshenko & Volkova, 1988) Xu, Xie, Zhao, Zhang & Su, 2012 (taxonomy source)
Geocenamus stegus (Thorne & Malek, 1968) Brzeski, 1991 accepted as Scutylenchus stegus (Thorne & Malek, 1968) Siddiqi, 1979 (taxonomy source)
Geocenamus tartuensis (Krall, 1959) Brzeski, 1991 accepted as Scutylenchus tartuensis (Krall, 1959) Siddiqi, 1979 (taxonomy source)
Geocenamus tessellatus (Goodey, 1952) Brzeski, 1991 accepted as Scutylenchus tessellatus (Goodey, 1952) Siddiqi, 1979 (taxonomy source)
Geocenamus tetylus (Anderson & Ebsary, 1982) Brzeski, 1991 accepted as Merlinius tetylus Anderson & Ebsary, 1982 (taxonomy source)
Geocenamus thomasi (Skwiercz, 1984) Brzeski, 1991 accepted as Scutylenchus thomasi Skwiercz, 1984 (taxonomy source)
Geocenamus tortilis (Kazachenko, 1980) Brzeski, 1991 accepted as Merlinius tortilis Kazachenko, 1980 (taxonomy source)
Geocenamus tumensis (Skwiercz, 1984) Brzeski, 1991 accepted as Scutylenchus tumensis Skwiercz, 1984 (taxonomy source)
Geocenamus variabilis (Ivanova & Shagalina, 1983) Brzeski, 1991 accepted as Scutylenchus variabilis Ivanova & Shagalina, 1983 (taxonomy source)
Merliniinae Siddiqi, 1971 (taxonomy source)
Merlinius Siddiqi, 1970 (taxonomy source)
Merlinius acuminatus Minagawa, 1985 (taxonomy source)
Merlinius alboranensis (Tobar-Jiménez, 1970) Tarjan, 1973 (taxonomy source)
Merlinius bavaricus (Sturhan, 1966) Siddiqi, 1970 (taxonomy source)
Merlinius bijnorensis Khan, 1971 (taxonomy source)
Merlinius bogdanovikatjkovi (Kirjanova, 1941) Siddiqi, 1970 (taxonomy source)
Merlinius capitonis Ivanova, 1983 (taxonomy source)
Merlinius circellus Anderson & Ebsary, 1982 (taxonomy source)
Merlinius communicus Sultan, Singh & Sakhuja, 1989 (taxonomy source)
Merlinius gatevi Budurova, 1988 (taxonomy source)
Merlinius graminicola (Kirjanova, 1951) Siddiqi, 1976 (taxonomy source)
Merlinius indicus Zarina & Maqbool, 1955 (taxonomy source)
Merlinius joctus (Thorne, 1949) Sher, 1974 (taxonomy source)
Merlinius khuzdarensis Handoo, Khan & Islam, 2007 (taxonomy source)
Merlinius lineatus (Allen, 1955) Siddiqi, 1970 (taxonomy source)
Merlinius microdorus (Geraert, 1966) Siddiqi, 1970 (taxonomy source)
Merlinius mollicephalus Eroshenko & Volkova, 1988 (taxonomy source)
Merlinius montanus Maqbool & Shahina, 1987 (taxonomy source)
Merlinius nanus (Allen, 1955) Siddiqi, 1970 (taxonomy source)
Merlinius niazae Maqbool, Fatima & Hashmi, 1983 (taxonomy source)
Merlinius nothus (Allen, 1955) Siddiqi, 1970 (taxonomy source)
Merlinius obesus (Gagarin, 2004) Sturhan, 2012 (taxonomy source)
Merlinius pistaciei Fatema & Farooq, 1992 (taxonomy source)
Merlinius plerorbus Anderson & Ebsary, 1982 (taxonomy source)
Merlinius processus Siddiqi, 1979 (taxonomy source)
Merlinius productus (Thorne, 1949) Sher, 1974 (taxonomy source)
Merlinius pseudobavaricus Saltukoglu, Geraert & Coomans, 1976 (taxonomy source)
Merlinius pyri Fatema & Farooq, 1992 (taxonomy source)
Merlinius tetylus Anderson & Ebsary, 1982 (taxonomy source)
Merlinius tortilis Kazachenko, 1980 (taxonomy source)
Nagelus Thorne & Malek, 1968 (taxonomy source)
Nagelus affinis (Allen, 1955) Siddiqi, 1979 accepted as Paramerlinius affinis (Allen, 1955) Sturhan, 2012 (taxonomy source)
Nagelus alpinus (Allen, 1955) Siddiqi, 1979 accepted as Paramerlinius alpinus (Allen, 1955) Sturhan, 2012 (taxonomy source)
Nagelus arenosus Ivanova & Shagalina, 1983 accepted as Paramerlinius arenosus (Ivanova & Shagalina, 1983) Sturhan, 2012 (taxonomy source)
Nagelus borealis Powers, Baldwin & Bell, 1983 (taxonomy source)
Nagelus elongatus Ivanova & Shagalina, 1983 accepted as Paramerlinius elongatus (Ivanova & Shagalina, 1983) Sturhan, 2012 (taxonomy source)
Nagelus exacutus Volkova, 1993 (taxonomy source)
Nagelus falcatus (Eroshenko, 1981) Siddiqi, 1986 accepted as Paramerlinius falcatus (Eroshenko, 1981) Sturhan, 2012 (taxonomy source)
Nagelus gerriae Khan & Singh, 1999 (taxonomy source)
Nagelus grandis (Allen, 1955) Siddiqi, 1979 accepted as Paramerlinius grandis (Allen, 1955) Sturhan, 2012 (taxonomy source)
Nagelus hexagrammus (Sturhan, 1966) Siddiqi, 1979 accepted as Paramerlinius hexagrammus (Sturhan, 1966) Sturhan, 2012 (taxonomy source)
Nagelus jamalensis (Nesterov, 1973) Siddiqi, 1979 (taxonomy source)
Nagelus lineatus (Allen, 1955) Siddiqi, 1979 accepted as Merlinius lineatus (Allen, 1955) Siddiqi, 1970 (taxonomy source)