Accacladium serpentulus Odhner, 1928 accepted as Accacladium serpentulum Odhner, 1928 (redescription)
Aephnidiogenes barbarus Nicoll, 1915 (redescription)
Aephnidiogenes major Yamaguti, 1934 (original description)
Aephnidiogenidae Yamaguti, 1934 (original description)
Allocreadium hasu Ozaki, 1926 (redescription)
Allocreadium japonicum Ozaki, 1926 (redescription)
Anisoporus cobraeformis Ozaki, 1928 (redescription)
Aponurus Looss, 1907 (additional source)
Aponurus brevicaudatus Yamaguti, 1934 (original description)
Aponurus rhinoplagusiae Yamaguti, 1934 (original description)
Aponurus vitellograndis Layman, 1930 accepted as Hysterolecitha vitellograndis (Layman, 1930) Skrjabin & Guschanskaja, 1954 (additional source)
Aporocotyle orientalis Yamaguti, 1934 (original description)
Asymphylodora macrostoma Ozaki, 1925 accepted as Asymphylodora innominata (Faust, 1924) Shimazu, Urabe & Grygier, 2011 (redescription)
Azygia anguillae Ozaki, 1924 (redescription)
Bianium hemistoma (Ozaki, 1928) Yamaguti, 1934 (redescription)
Bianium hemistoma (Ozaki, 1928) Yamaguti, 1934 (new combination reference)
Biovarium Yamaguti, 1934 (original description)
Biovarium cryptocotyle Yamaguti, 1934 (original description)
Bivesicula Yamaguti, 1934 (original description)
Bivesicula claviformis Yamaguti, 1934 (original description)
Bivesiculidae Yamaguti, 1934 (original description)
Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 (redescription)
Bucephalopsis elongatus Ozaki, 1928 accepted as Prosorhynchoides elongatus (Ozaki, 1928) Bott & Cribb, 2005 (redescription)
Bucephalus uranoscopi Yamaguti, 1934 (original description)
Cantherines unicornus (Basilewsky, 1855) accepted as Thamnaconus modestus (Günther, 1877) (basis of record)
Caudotestis Yamaguti, 1934 accepted as Neoplagioporus Shimazu, 1990 (original description)
Caudotestis gnathopogonis Yamaguti, 1934 accepted as Neoplagioporus elongatus (Goto & Ozaki, 1930) Shimazu, 1990 (original description)
Caudotestis orientalis Yamaguti, 1934 accepted as Neoplagioporus elongatus (Goto & Ozaki, 1930) Shimazu, 1990 (original description)
Caudotestis zacconis Yamaguti, 1934 accepted as Neoplagioporus zacconis (Yamaguti, 1934) Shimazu, 1990 (original description)
Cephaloporidae Yamaguti, 1934 accepted as Zoogonidae Odhner, 1902 (original description)
Cephaloporinae Yamaguti, 1934 (original description)
Cephaloporus Yamaguti, 1934 (original description)
Cephaloporus monacanthi Yamaguti, 1934 (original description)
Choanostoma Yamaguti, 1934 accepted as Choanotrema Nitta & Tanaka, 2018 (original description)
Choanostoma plectorhynchi Yamaguti, 1934 accepted as Choanotrema plectorhynchi (Yamaguti, 1934) Nitta & Tanaka, 2018 (original description)
Coitocaecum glandulosum Yamaguti, 1934 accepted as Coitocaecum gymnophallum Nicoll, 1915 (original description)
Coitocaecum latum Ozaki, 1929 (redescription)
Coitocaecum plagiorchis Ozaki, 1926 (redescription)
Cryptogonimidae Ward, 1917 (additional source)
Decemtestis Yamaguti, 1934 (original description)
Decemtestis azumae (Layman, 1930) Yamaguti, 1934 (new combination reference)
Decemtestis callionymi Yamaguti, 1934 (original description)
Decemtestis ditrematis Yamaguti, 1934 (original description)
Decemtestis sillagonis Yamaguti, 1934 (original description)
Derogenes varicus (Müller, 1784) Looss, 1901 (redescription)
Didymocystis reniformis Ariola, 1902 (redescription)
Didymocystis wedli Ariola, 1902 accepted as Didymosulcus wedli (Ariola, 1902) (redescription)
Didymozoon Taschenberg, 1879 (additional source)
Didymozoon minor Yamaguti, 1934 (original description)
Dinurus coryphaenae Yamaguti, 1934 (original description)
Dinurus euthynni Yamaguti, 1934 (original description)
Dinurus scombri Yamaguti, 1934 (original description)
Diphterostomum brusinae (Stossich, 1888) Stossich, 1904 (redescription)
Diplobulbus Yamaguti, 1934 (original description)
Diplobulbus calotomi Yamaguti, 1934 (original description)
Discogaster Yamaguti, 1934 nec Burmeister, 1835 accepted as Discogastroides Strand, 1934 accepted as Paradiscogaster Yamaguti, 1934 (original description)
Discogaster minor Yamaguti, 1934 accepted as Paradiscogaster ostracii (Yamaguti, 1934) Cribb, Anderson & Bray, 1999 (original description)
Discogaster ostracionis Yamaguti, 1934 accepted as Paradiscogaster ostracii (Yamaguti, 1934) Cribb, Anderson & Bray, 1999 (original description)
Discogasterinae Yamaguti, 1934 accepted as Faustulidae Poche, 1926 (original description)
Dolichoenterum longissimum Ozaki, 1924 (redescription)
Echinostephanus Yamaguti, 1934 accepted as Stephanostomum Looss, 1899 (original description)
Echinostephanus hispidus Yamaguti, 1934 accepted as Stephanostomum hispidum (Yamaguti, 1934) Manter, 1940 (original description)
Ectenurus hamati Yamaguti, 1934 accepted as Erilepturus hamati (Yamaguti, 1934) Manter, 1947 (original description)
Ectenurus paralichthydis Yamaguti, 1934 accepted as Erilepturus hamati (Yamaguti, 1934) Manter, 1947 (original description)
Ectenurus platycephali Yamaguti, 1934 accepted as Erilepturus hamati (Yamaguti, 1934) Manter, 1947 (original description)
Genarchopsis goppo Ozaki, 1925 (redescription)
Genolinea aburame Yamaguti, 1934 (original description)
Genolinea anura (Layman, 1930) Manter, 1954 (status source)
Gonocerca kobayashii (Layman, 1930) Manter, 1934 (redescription)
Gotonius facilis Ozaki, 1924 accepted as Prosorhynchus facilis (Ozaki, 1924) Eckmann, 1932 (redescription)
Gotonius platycephali Yamaguti, 1934 accepted as Prosorhynchus platycephali (Yamaguti, 1934) Srivastava, 1938 (original description)
Gyliauchen papillatus (Goto & Matsudaira, 1918) Goto, 1919 (redescription)
Hamacreadium epinepheli Yamaguti, 1934 accepted as Cainocreadium epinepheli (Yamaguti, 1934) Durio & Manter, 1968 (original description)
Hamacreadium lethrini Yamaguti, 1934 (original description)
Haplosplanchnus pachysoma (Eysenhardt, 1829) Looss, 1902 (redescription)
Helicometra epinepheli Yamaguti, 1934 (original description)
Helicometra hypodytis Yamaguti, 1934 accepted as Helicometra fasciata (Rudolphi, 1819) Odhner, 1902 (original description)
Helicometroides Yamaguti, 1934 (original description)
Helicometroides longicollis Yamaguti, 1934 (original description)
Hemiurus odhneri Yamaguti, 1934 accepted as Hemiurus levinseni Odhner, 1905 (original description)
Hexangium sigani Goto & Ozaki, 1929 (redescription)
Hypohepaticola Yamaguti, 1934 (original description)
Hypohepaticola callionymi Yamaguti, 1934 (original description)
Hysterolecitha microrchis Yamaguti, 1934 accepted as Thulinia microrchis (Yamaguti, 1934) Bray, Cribb & Barker, 1993 (original description)
Hysterolecithoides Yamaguti, 1934 (original description)
Hysterolecithoides epinepheli Yamaguti, 1934 (original description)
Isocoelium mediolecithale Ozaki, 1927 (redescription)
Isoparorchis trisimilitubis Southwell, 1913 (redescription)
Lebouria calotomi Yamaguti, 1934 accepted as Choerodonicola calotomi (Yamaguti, 1934) Cribb, 2005 (original description)
Lebouria choerodonis Yamaguti, 1934 accepted as Choerodonicola choerodontis (Yamaguti, 1934) Cribb, 2005 (original description)
Lebouria lobata Yamaguti, 1934 accepted as Plagioporus lobatus (Yamaguti, 1934) Manter, 1947 accepted as Neolebouria lobata (Yamaguti, 1934) Gibson, 1976 accepted as Mesobathylebouria lobata (Yamaguti, 1934) Martin, Huston, Cutmore & Cribb, 2019 (original description)
Lecithaster salmonis Yamaguti, 1934 (original description)
Lecithaster stellatus Looss, 1907 (redescription)
Lecithocladium excisiforme Cohn, 1902 (redescription)
Lecithocladium excisum (Rudolphi, 1819) Lühe, 1901 (redescription)
Lecithocladium magnacetabulum Yamaguti, 1934 (original description)
Lecithocladium pagrosomi Yamaguti, 1934 (original description)
Lecithocladium psenopsis Yamaguti, 1934 (original description)
Lepodora gadi Yamaguti, 1934 accepted as Lepidapedon gadi (Yamaguti, 1934) Acena, 1947 (original description)
Lepotrema clavatum Ozaki, 1932 (redescription)

Japan for Allocreadium hasu Ozaki, 1926 
Japan for Allocreadium japonicum Ozaki, 1926 
Japan for Asymphylodora macrostoma Ozaki, 1925 
Japan for Azygia anguillae Ozaki, 1924 
Japan for Caudotestis gnathopogonis Yamaguti, 1934 
Japan for Caudotestis orientalis Yamaguti, 1934 
Japan for Caudotestis zacconis Yamaguti, 1934 
Japan for Coitocaecum plagiorchis Ozaki, 1926 
Japan for Genarchopsis goppo Ozaki, 1925 
Japan for Isoparorchis trisimilitubis Southwell, 1913 
Japan for Macrolecithus gotoi Hasegawa & Ozaki, 1926 
Japan for Orientocreadium pseudobagri Yamaguti, 1934 
Japan for Phyllodistomum macrobrachicola Yamaguti, 1934 
Japan for Phyllodistomum mogurndae Yamaguti, 1934 
Japan for Phyllodistomum parasiluri Yamaguti, 1934 
Japan for Podocotyle ayu Takahashi, 1928 
Japan for Urorchis acheilognathi Yamaguti, 1934 
Japanese Exclusive Economic Zone for Accacladium serpentulus Odhner, 1928 
Japanese Exclusive Economic Zone for Aporocotyle orientalis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Bianium hemistoma (Ozaki, 1928) Yamaguti, 1934 
Japanese Exclusive Economic Zone for Biovarium cryptocotyle Yamaguti, 1934 
Japanese Exclusive Economic Zone for Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 
Japanese Exclusive Economic Zone for Cephaloporus monacanthi Yamaguti, 1934 
Japanese Exclusive Economic Zone for Coitocaecum glandulosum Yamaguti, 1934 
Japanese Exclusive Economic Zone for Decemtestis callionymi Yamaguti, 1934 
Japanese Exclusive Economic Zone for Decemtestis ditrematis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Dinurus coryphaenae Yamaguti, 1934 
Japanese Exclusive Economic Zone for Dinurus euthynni Yamaguti, 1934 
Japanese Exclusive Economic Zone for Discogaster minor Yamaguti, 1934 
Japanese Exclusive Economic Zone for Discogaster ostracionis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Ectenurus hamati Yamaguti, 1934 
Japanese Exclusive Economic Zone for Ectenurus paralichthydis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Ectenurus platycephali Yamaguti, 1934 
Japanese Exclusive Economic Zone for Gonocerca kobayashii (Layman, 1930) Manter, 1934 
Japanese Exclusive Economic Zone for Gyliauchen papillatus (Goto & Matsudaira, 1918) Goto, 1919 
Japanese Exclusive Economic Zone for Hamacreadium epinepheli Yamaguti, 1934 
Japanese Exclusive Economic Zone for Hamacreadium lethrini Yamaguti, 1934 
Japanese Exclusive Economic Zone for Lebouria calotomi Yamaguti, 1934 
Japanese Exclusive Economic Zone for Lebouria choerodonis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Lecithaster salmonis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Lintonium vibex (Linton, 1900) Stunkard & Nigrelli, 1930 
Japanese Exclusive Economic Zone for Odhnerium calyptocotyle (Monticelli, 1893) Yamaguti, 1934 
Japanese Exclusive Economic Zone for Opecoelus minor Yamaguti, 1934 
Japanese Exclusive Economic Zone for Opegaster syngnathi Yamaguti, 1934 
Japanese Exclusive Economic Zone for Paradiscogaster pyriformis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Paragyliauchen chaetodontis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Parahemiurus seriolae Yamaguti, 1934 
Japanese Exclusive Economic Zone for Paraisocoelium exorchis Ozaki, 1932 
Japanese Exclusive Economic Zone for Paralepidophyllum pyriforme Yamaguti, 1934 
Japanese Exclusive Economic Zone for Parantorchis chaetodontis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Phyllotrema bicaudatum Yamaguti, 1934 
Japanese Exclusive Economic Zone for Proctoeces maculatus (Looss, 1901) Odhner, 1911 
Japanese Exclusive Economic Zone for Prosorhynchus aculeatus Odhner, 1905 
Japanese Exclusive Economic Zone for Prosorhynchus uniporus Ozaki, 1924 
Japanese Exclusive Economic Zone for Steringotrema nakazawai Kobayashi, 1921 
Japanese Exclusive Economic Zone for Sterrhurus musculus Looss, 1907 
Japanese Exclusive Economic Zone for Tormopsolus orientalis Yamaguti, 1934 
Japanese Exclusive Economic Zone for Tubulovesicula anguillae Yamaguti, 1934 
Japanese Exclusive Economic Zone for Wedlia orientalis Yamaguti, 1934 
Japanese part of the Inland Sea for Aephnidiogenes barbarus Nicoll, 1915 
Japanese part of the Inland Sea for Aephnidiogenes major Yamaguti, 1934 
Japanese part of the Inland Sea for Aponurus vitellograndis Layman, 1930 
Japanese part of the Inland Sea for Bivesicula claviformis Yamaguti, 1934 
Japanese part of the Inland Sea for Bucephalopsis elongatus Ozaki, 1928 
Japanese part of the Inland Sea for Coitocaecum latum Ozaki, 1929 
Japanese part of the Inland Sea for Decemtestis callionymi Yamaguti, 1934 
Japanese part of the Inland Sea for Decemtestis sillagonis Yamaguti, 1934 
Japanese part of the Inland Sea for Diphterostomum brusinae (Stossich, 1888) Stossich, 1904 
Japanese part of the Inland Sea for Diplobulbus calotomi Yamaguti, 1934 
Japanese part of the Inland Sea for Genolinea aburame Yamaguti, 1934 
Japanese part of the Inland Sea for Gotonius facilis Ozaki, 1924 
Japanese part of the Inland Sea for Haplosplanchnus pachysoma (Eysenhardt, 1829) Looss, 1902 
Japanese part of the Inland Sea for Helicometra epinepheli Yamaguti, 1934 
Japanese part of the Inland Sea for Helicometra hypodytis Yamaguti, 1934 
Japanese part of the Inland Sea for Helicometroides longicollis Yamaguti, 1934 
Japanese part of the Inland Sea for Hexangium sigani Goto & Ozaki, 1929 
Japanese part of the Inland Sea for Hypohepaticola callionymi Yamaguti, 1934 
Japanese part of the Inland Sea for Hysterolecithoides epinepheli Yamaguti, 1934 
Japanese part of the Inland Sea for Lecithaster stellatus Looss, 1907 
Japanese part of the Inland Sea for Lecithocladium excisiforme Cohn, 1902 
Japanese part of the Inland Sea for Lecithocladium magnacetabulum Yamaguti, 1934 
Japanese part of the Inland Sea for Lecithocladium pagrosomi Yamaguti, 1934 
Japanese part of the Inland Sea for Lepotrema clavatum Ozaki, 1932 
Japanese part of the Inland Sea for Maculifer japonicus Layman, 1931 
Japanese part of the Inland Sea for Magnacetabulum trachuri Yamaguti, 1934 
Japanese part of the Inland Sea for Nematobothrium pristipomatis Yamaguti, 1934 
Japanese part of the Inland Sea for Opecoelus elongatus Ozaki, 1928 
Japanese part of the Inland Sea for Opecoelus inimici Yamaguti, 1934 
Japanese part of the Inland Sea for Opecoelus lobatus Ozaki, 1925 
Japanese part of the Inland Sea for Opecoelus sphaericus Ozaki, 1925 
Japanese part of the Inland Sea for Opegaster ovatus Ozaki, 1928 
Japanese part of the Inland Sea for Opegaster parapristipomatis Yamaguti, 1934 
Japanese part of the Inland Sea for Paracryptogonimus acanthostomus Yamaguti, 1934 
Japanese part of the Inland Sea for Paraproctotrema fusiforme Yamaguti, 1934 
Japanese part of the Inland Sea for Pedunculacetabulum opisthorchis Yamaguti, 1934 
Japanese part of the Inland Sea for Pharyngora sebastodis Yamaguti, 1934 
Japanese part of the Inland Sea for Podocotyloides petalophallus Yamaguti, 1934 
Japanese part of the Inland Sea for Proctoeces major Yamaguti, 1934 
Japanese part of the Inland Sea for Proctotrema plectorhynchi Yamaguti, 1934 
Japanese part of the Inland Sea for Prosorchis psenopsis Yamaguti, 1934 

 Taxonomy

 for Caudotestis orientalis Yamaguti, 1934

Originally type of new genus Caudotestis Yamaguti, 1934 nec Issaitschikov, 1928 [details]