FAMILY Plectidae Örley, 1880 [Chitwood & Chitwood 1937; Diagnostic; Zell 1993 p.8] SUBFAMILY Anaplectinae Zell, 1993 GENUS Anaplectus De Coninck & Schuurmans Stekhoven, 1933 [=Marinoplectus Kreis, 1963] SPECIES Anaplectus atubulatus Andrássy, 1987:22 [Redescription; Holovachov, Bostrom, Winiszewska & Hanel 2004 p.48] SPECIES Anaplectus brzeskii Holovachov, Bostrom, Winiszewska & Hanel, 2004:54 SPECIES Anaplectus grandepapillatus Ditlevsen, 1928 [as subspecies of granulosus; syn. Andrássy 1973 p.106] SPECIES Anaplectus granulosus (Bastian, 1865) [Redescription; Holovachov, Bostrom, Winiszewska & Hanel 2004 p.46] [=Plectus granulosus Bastian, 1865] [=Anaplectus arenicola Killick, 1964] [=Plectus blanchi Hofmänner in Hofmänner & Menzel, 1914] [=Anaplectus blanci Stekhoven & Teunissen, 1938] [=Plectus schneideri de Man, 1880] [=Marinoplectus tetrapapillatus Kreis, 1963] [=Plectus tubifer Cobb, 1914] SPECIES Anaplectus magnus Brzeski, 1963 [Redescription; Bussau 1990 p.177] SPECIES Anaplectus parasimilis Turskova, 1978:135 SPECIES Anaplectus porosus Allen & Noffsinger, 1968 [Redescription; Bussau 1990 p.179] SPECIES Anaplectus similis Allen & Noffsinger, 1968 SPECIES Anaplectus subgranulosus Turskova, 1978:132 SPECIES Anaplectus submersus (Hirschmann, 1952) [=Plectus submersus Hirschmann, 1952] SPECIES Anaplectus tortus Andrássy, 1986:1 SPECIES Anaplectus varicaudatus Allen & Noffsinger, 1968 GENUS Arctiplectus Andrássy, 2003:35 [Type is Arctiplectus alaskanus] TYPE SPECIES Arctiplectus alaskanus Andrássy, 2003:35 GENUS Perioplectus Sanwal in Gerlach & Riemann, 1973:11 [nomen nova] [=Periplectus Sanwal, 1968:992] [praeocc. Raffray 1887] SPECIES Perioplectus labiosus (Sanwal, 1968) [Gerlach & Riemann 1973] [=Periplectus labiosus Sanwal, 1968] SPECIES Perioplectus secundus Andrássy, 2003:39 SUBFAMILY Plectinae Örley, 1880 GENUS Ceratoplectus Andrássy, 1984 [subgenus of Plectus?] SPECIES Ceratoplectus amoenus Andrássy, 1989:4 [syn. of arctus by Zell 1993 p.36] SPECIES Ceratoplectus armatus Buetschli, 1873 [Description; Bostroem 2003 p.102; Diagnostic; Holovachov 2001 p.2] SPECIES Ceratoplectus assimilis (Bütschli, 1873) [Diagnostic; Holovachov 2001 p.2] [=Plectus assimilis Bütschli, 1873] SPECIES Ceratoplectus brzeskii (Holovachov, 2001):1 [Pacific-Ocean-islands; New Caledonia, Mont Mou] [=Plectus brzeskii Holovachov, 2001] SPECIES Ceratoplectus cornus (Maggenti, 1961) [Diagnostic; Holovachov 2001 p.2] [=Plectus cornus Maggenti, 1961] SPECIES Ceratoplectus lenis Andrássy, 1985:44 [Diagnostic; Holovachov 2001 p.2] GENUS Oligoplectus Taylor, 1935 [?] SPECIES Oligoplectus succini (von Duisberg, 1862) [=Anguillula succini von Duisberg, 1862] GENUS Plectus Bastian, 1865c [70 species] [=Chiloplectus Andrássy, 1984] [syn. Holovachov 2004 p.668] [=Plectoides de Man, 1904:41] [=Pleictus] [misspelling ZR] [=Proteroplectus Paramonov, 1964] SPECIES Plectus aberrans Kreis, 1930 SPECIES Plectus acuminatus Bastian, 1865 [Description; Vinciguerra 1986 p.127; Redescription; Bostrom 1995 p.26] [=Plectus communis Bütschli, 1873] SPECIES Plectus agilior Cobb, 1898 SPECIES Plectus americanus Zell, 1993:75 SPECIES Plectus amorphotelus Ebsary, 1985:2395 [Redescription; Holovachov & Susulovsky 2000 p.233] SPECIES Plectus amphidiscatus Filipjev, 1929 SPECIES Plectus andrassyi Timm, 1971 [Redescription; Holovachov, Susulovsky & Bostrom 2000 p.392] [=Plectus globilabiatus Andrássy, 1963] [praeocc. Kiryanova 1958] [=Plectus telekii Mulk & Coomans, 1978] [syn. Holovachov, Susulovsky & Bostrom 2000 p.383] SPECIES Plectus annulatus Maggenti, 1961 SPECIES Plectus antarcticus de Man, 1904 [Redescription; Andrássy 1998 p.127; Redescription; Vinciguerra 1995 p.115] [=Plectus murrayi Yeates, 1970] SPECIES Plectus aquatilis Andrássy, 1985:9 SPECIES Plectus araiensis Khan & Araki, 2001:182 SPECIES Plectus araucanorum Andrássy, 2002:6 [Chile] SPECIES Plectus armatus Bütschli, 1873 [=Plectus armatus Maiello, 1967] [syn. Bostroem 2003 p.102 in genus Ceratoplectus] [=Cyatholaimus styriacus Micoletzky, 1922] SPECIES Plectus australis Cobb, 1893 [Diagnostic; Zell 1993 p.49] SPECIES Plectus belgicae de Man, 1904 [Redescription; Andrássy 1998 p.137] SPECIES Plectus cancellatus Zullini, 1979:71 [placed in Chiloplectus by Holovachov, Susulovsky & Bostrom 2000 p.387; Redescription; Holovachov, Susulovsky & Bostrom 2000 p.392; Diagnostic; Ocana, Abolafia & Abebe 2001 p.212] [=Chiloplectus loricatus Andrássy, 1985:49] [syn. Holovachov, Susulovsky & Bostrom 2000 p.391] SPECIES Plectus capensis Khan & Araki, 2001:182 SPECIES Plectus cirratus Bastian, 1865 [=Plectus africanus Daday, 1908] SPECIES Plectus cladinosus Holovachov & Susulovsky, 1999:11 [Volynska District, Shutsk National Natural Park] SPECIES Plectus coloradensis (Zell, 1993):26 [syn. Holovachov & De Ley 2006 p.635] [=Chiloplectus coloradensis Zell, 1993] SPECIES Plectus costatus Zell, 1993:43 SPECIES Plectus cryptoptychus de Ley & Coomans, 1994:49 [Galapagos-islands] SPECIES Plectus cylindricus Abdel-Rahman, 1993:59 SPECIES Plectus decens Andrássy, 1985:14 [Redescription; Holovachov & Susulovsky 1999 p.14] SPECIES Plectus demani Örley, 1880 SPECIES Plectus effilatus Stekhoven & Mawson, 1954 SPECIES Plectus elegans Zell, 1993:83 SPECIES Plectus elongatus Maggenti, 1961 SPECIES Plectus falklandiae Allgén, 1959 SPECIES Plectus fragilis Zell, 1993:40 SPECIES Plectus frigophilus Kiryanova, 1958 [Redescription; Tsalolikhin 1989 p.96; Kito, Shishida & Ohyama 1991 p.254] SPECIES Plectus galapagensis De Ley & Coomans, 1994:55 [Galapagos-islands; Description; Abebe & Coomans 1996 p.54] SPECIES Plectus geophilus de Man, 1884 SPECIES Plectus gisleni Allgén, 1951 SPECIES Plectus glandulatus Tahseen, Baniyamuddin, Hussain & Ahmad, 2004:756 SPECIES Plectus globilabiatus Kiryanova, 1958 SPECIES Plectus grahami Allgén, 1951 SPECIES Plectus hyperboreus Zell, 1993:81 SPECIES Plectus indicus (Tahseen, Baniyamuddin, Hussain & Ahmad, 2004):760 [syn. Holovachov & De Ley 2006 p.636; Redescription; Zullini, Loof & Bongers 2002 p.712] [=Chiloplectus indicus Tahseen, Baniyamuddin, Hussain & Ahmad, 2004] SPECIES Plectus infundibulifer Andrássy, 1985:20 SPECIES Plectus inquirendus Andrássy, 1958 SPECIES Plectus insignis Cobb, 1893 SPECIES Plectus insolens Andrássy, 1998:134 [South Orkney Islands, Signy Island] SPECIES Plectus karachiensis Shahina, Tabassum & Maqbool, 2001:33 SPECIES Plectus kyotoensis Khan & Araki, 2001:180 SPECIES Plectus lamproptychus de Ley & Coomans, 1994:54 [Galapagos-islands] SPECIES Plectus longicaudatus Bütschli, 1873 [Redescription; Holovachov & Susulovsky 1999 p.15; Hernandez, Imaz & Armendariz 1998 p.633 ?] [=Plectus chengmohliangi Hoeppli & Chu, 1932] [=Plectus kenyanus Allgén, 1952] [=Plectus meridionalis Steiner, 1916] SPECIES Plectus magadani Kuzmin, 1979 [as subspecies of acuminatus; as species Andrassy 1985 p.9] SPECIES Plectus masleni (Bostrom, 1997):74 [Diagnostic; Holovachov, Susulovsky & Bostrom 2000 p.392; Holovachov & De Ley 2006 p.636] [=Chiloplectus masleni Bostrom, 1997] SPECIES Plectus meridianus Andrássy, 1998:139 [Terra Firma Island] SPECIES Plectus minimus Cobb, 1893 [described by Hernandez, Imaz & Armendariz 1998 p.636] SPECIES Plectus minutus Maggenti, Maggenti & Abdel-Rahman, 1990:89 [syn. of longicaudatus by Zell 1993 p.41] SPECIES Plectus montanus Zell, 1993:86 SPECIES Plectus neoindicus Holovachov & De Ley, 2006:636 [nomen nova] [= indicus Tahseen, 2004] [et al; praeocc.] SPECIES Plectus niaensis Khan & Araki, 2001:177 SPECIES Plectus obtusicaudatus Daday, 1899 SPECIES Plectus opisthocirculus Andrássy, 1952 [Redescription; Bussau 1990 p.180] SPECIES Plectus palustris de Man, 1880 SPECIES Plectus paracuminatus Zell, 1993:59 SPECIES Plectus paraguayensis Kreis, 1932 SPECIES Plectus parainquirendus Gagarin, 1971 SPECIES Plectus paratenuis Zell, 1993:86 TYPE SPECIES Plectus parietinus Bastian, 1865c [rootsDiagnostic; Zell 1993 p.49] [=Plectus fusiformis Bastian, 1865] [=Plectus hawaiiensis Cobb, 1906] [=Plectus intermedius Cobb, 1893] [=Plectus naticochensis Steiner, 1920] [=Plectus ornatus Bütschli, 1873] [=Plectus patagonicus de Man, 1904] [Redescription; Zullini, Loof & Bongers 2002 p.714] [=Plectus pusteri Fuchs, 1930] [=Plectus velox Bastian, 1865] SPECIES Plectus parvus Bastian, 1865 [=Rhabdolaimus balatonicus Daday, 1894] [=Plectus belgicae de Man, 1904] [=Plectus opisthocirculus Andrássy, 1952] [=Plectus paracommunis Hoeppli, 1926] [=Plectus potamogeti W. Schneider, 1937] SPECIES Plectus patagonicus de Man, 1904 [Redescription; Zullini, Loof & Bongers 2002 p.714] SPECIES Plectus pseudelongatus Zell, 1993:62 SPECIES Plectus pulcher Zell, 1993:40 SPECIES Plectus pusillus Cobb, 1893 SPECIES Plectus raabei Brzeski, 1961 SPECIES Plectus refusus Tahseen, Ahmad & Jairajpuri, 1995:474 SPECIES Plectus rhizophilus de Man, 1880 [Redescription; Tsalolikhin 1996 p.215] SPECIES Plectus rivalis (Dujardin, 1845) [=Enoplus rivalis Dujardin, 1845] SPECIES Plectus rotundilabiatus Zell, 1993:51 SPECIES Plectus sabinae Hernandez, Imaz & Armendariz, 1998:638 [Navarra, Leiza area] SPECIES Plectus sambesii Micoletzky, 1915 SPECIES Plectus silvaticus Andrássy, 1985:34 SPECIES Plectus similis Zell, 1993:74 SPECIES Plectus spicacaudatus Ebsary, 1985:2395 [Redescription; Holovachov & Susulovsky 2000 p.236] SPECIES Plectus tenuis Bastian, 1865 SPECIES Plectus thornei Ruhm, 1956 [syn. of acuminatus by Andrassy 1985 p.9] SPECIES Plectus tolerans Andrássy, 1998:131 [Biscoe Islands, Emperor Island] SPECIES Plectus triplogaster Örley, 1880 SPECIES Plectus tritici Bastian, 1865 SPECIES Plectus tropicus Zell, 1993:70 SPECIES Plectus turricaudatus Truskova, 1976 [Diagnostic; Holovachov & Susulovsky 1999 p.13] SPECIES Plectus varians Maggenti, 1961 SPECIES Plectus vindobonensis Gunhold, 1953 SPECIES Plectus zelli Tahseen, Ahmad & Jairajpuri, 1992:503 GENUS Vetus Taylor, 1935 SPECIES Vetus duisburgi Taylor, 1935 SUBFAMILY Wilsonematinae Chitwood, 1951 [ref. Holovachov, Bostrom & Mundo-Ocampo 2004] [=Tylocephalinae Ganguly & Khan, 1987:227] GENUS Anthonema Cobb, 1906 [incertae sedis] TYPE SPECIES Anthonema revoluta Cobb, 1906 [ revolutum?] GENUS Ereptonema Anderson, 1966:929 [Wilsonematinae??] [=Paraereptocephalus Khan, 1990] [et al.; p. 439; lapsus calami for Paraereptonema] [=Paraereptonema Eroshenko, 1977] [type is ciliata] [=Wilsereptus Chawla Khan & Saha, 1977] SPECIES Ereptonema agrarum (Nesterov, 1973) [Redescription; Bussau 1990 p.183; incertae sedis; Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.92; syn. Eroshenko 1977 p.6] [=Wilsonema agrarum Nesterov, 1973] SPECIES Ereptonema andersoni (Chawla, Khan & Saha, 1977) [=Wilsereptus andersoni Chawla, Khan & Saha, 1977] SPECIES Ereptonema arcticum Loof, 1971 [Redescription; Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.88] SPECIES Ereptonema cheliferum (Andrássy, 1986):4 [syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.92] [=Wilsonema cheliferum Andrássy, 1986] TYPE SPECIES Ereptonema fimbriatum Anderson, 1966 [=Paraereptonema ciliata Eroshenko, 1977:6] [syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.92] GENUS Neotylocephalus Ali.Farooqui & Tejpal, 1969 [=Coronacephalus Ganguly & Khan, 1987:227] [Type is C. indicus; Tylocephalinae; syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003] [=Spatiocephalus Patil & Khan, 1983:255] [syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003] TYPE SPECIES Neotylocephalus annonae Ali, Farooqui & Tejpal, 1969 [ Redescription; Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.99] [=Spatiocephalus venustrus Patil & Khan, 1983:255] [host Mangifera indica - plant; syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.99] SPECIES Neotylocephalus haryanensis Holovachov, Boström, Tandingan De Ley, De Ley & Coomans, 2003 [nomen nova] [=Wilsereptus indicus Walia & Bajaj, 1999] [praeocc. Ganguly & Khan 1986] SPECIES Neotylocephalus inflatus Yeates, 1967 [placed Holovachov, Boström, Tandingan De Ley, De Ley & Coomans 2003] [=Plectus gangulykhani Zell, 1993] [in subgenus Wilsonema; nomen nova pro Coronacephalus indicus Ganguly & Khan 1986; syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.99] [=Coronacephalus indicus Ganguly & Khan, 1986:229] [syn. Holovachov, Boström, Tandingan De Ley, De Ley & Coomans 2003] [=Ereptonema inflatum Yeates, 1967] GENUS Tylocephalus Crossman, 1933 SPECIES Tylocephalus andinus Zell, 1985:83 SPECIES Tylocephalus annulatus Zell, 1985:80 [Redescription; Bussau 1990 p.181] SPECIES Tylocephalus auriculatus (Bütschli, 1873) [Anderson 1966; Redescription; Holovachov, Bostrom & Mundo Ocampo 2004 p.116] [=Plectus auriculatus Bütschli, 1873] [=Tylocephalus bacillivorus Crossmann, 1933] [Gerlach & Riemann 1973] SPECIES Tylocephalus becki Zell, 1985:80 SPECIES Tylocephalus cephalatus (Cobb, 1893) [Anderson 1966; Redescription; Holovachov, Bostrom & Mundo Ocampo 2004 p.118] [=Plectus cephalatus Cobb, 1893] SPECIES Tylocephalus cornutus Zell, 1985:80 SPECIES Tylocephalus laticollis Zell, 1985:84 [Redescription; Bussau 1990 p.182] SPECIES Tylocephalus longicornis Holovachov, Bostrom & Mundo-Ocampo, 2004:122 SPECIES Tylocephalus nimius de Ley & Coomans, 1997:215 [Isla Santa Cruz, Los Gemelos; Redescription; Holovachov, Bostrom & Mundo Ocampo 2004 p.119] SPECIES Tylocephalus palmatus Tahseen, Ahmad & Jairajpuri, 1995:471 SPECIES Tylocephalus primitivus Holovachov, Bostrom & Mundo-Ocampo, 2004:123 GENUS Wilsonema Cobb, 1913 [=Bitholinema De Coninck, 1931:2] [=Pycnolaimus Cobb, 1920:258] [type is pygmaeus] [=Wilsotylus Chawla, Khan & Prasad, 1969] [type is bangaloreiensis] SPECIES Wilsonema andersoni Zell, 1985:88 SPECIES Wilsonema bangaloreiensis (Chawla, Khan & Prasad, 1969) [Diagnostic; Holovachov & Hanel 2004 p.473] [=Wilsotylus bangaloreiensis Chawla, Khan & Prasad, 1969] SPECIES Wilsonema convexum Zell, 1993 SPECIES Wilsonema fausti (Kreis, 1930) [incertae sedis; in subgenus Wilsonema] [=Plectus fausti Kreis, 1930] SPECIES Wilsonema longicaudatum Holovachov & Hánel, 2004 TYPE SPECIES Wilsonema otophorum de Man, 1880 [ Cobb 1913; Redescription; Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.87] [=Wilsonema andersoni Zell, 1985] [valid?; syn. Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.87] [=Plectus bolivianus Zell, 1993.] [unnec. new name for andersoni; in subgenus Wilsonema] [=Wilsonema capitatum Cobb, 1913] [=Plectus otophorus de Man, 1880] [=Plectus tentaculatus Fuchs, 1930] [in subgenus Wilsonema] SPECIES Wilsonema promissum Khan, Seema & Khan, 1990. [incertae sedis] SPECIES Wilsonema pygmaea Cobb, 1920 [Andrássy 1984; incertae sedis] [=Pycnolaimus pygmaeus Cobb, 1920] SPECIES Wilsonema schuurmansstekhoveni (De Coninck, 1931) [valid by Holovachov & Hanel 2004; Redescription; Holovachov, Bostrom, Tandingan De Ley, De Ley & Coomans 2003 p.82] [=Bitholinema schuurmansstekhoveni De Coninck, 1931]