Acanthoparyphium charadrii Yamaguti, 1939 (original description)
Acanthoparyphium kurogamo Yamaguti, 1939 (original description)
Acanthoparyphium melanittae Yamaguti, 1939 (original description)
Acanthoparyphium spinulosum suzugamo Yamaguti, 1939 (original description)
Acanthoparyphium tyosenense Yamaguti, 1939 (original description)
Brachylaima syrmatici (Yamaguti, 1935) Yamaguti, 1939 (new combination reference)
Catatropis cygni Yamaguti, 1939 (original description)
Catatropis hisikui Yamaguti, 1939 (original description)
Catatropis pacifera Noble, 1933 accepted as Notocotylus pacifera (Noble, 1933) Harwood, 1939 (redescription)
Centrocestus formosanus (Nishigori, 1924) Price, 1932 (redescription)
Cercocotyla Yamaguti, 1939 (original description)
Cercocotyla cerylis Yamaguti, 1939 (original description)
Corpopyrum longisacculatum Yamaguti, 1933 accepted as Haematotrephus longisacculatum (Yamaguti, 1933) Dronen & Blend, 2015 (redescription)
Cotylurus ban Yamaguti, 1939 (original description)
Cryptocotyle lingua (Creplin, 1825) Fischoeder, 1903 (redescription)
Cyathocotyle melanittae Yamaguti, 1934 (redescription)
Cyclocoelum mutabile (Zeder, 1800) Brandes, 1892 (redescription)
Cyclocoelum turusigi Yamaguti, 1939 accepted as Selfcoelum turusigi (Yamaguti, 1939) Dronen & Blend, 2002 (original description)
Echinochasmus gorsakii Yamaguti, 1939 (original description)
Echinochasmus japonicus Tanabe, 1926 (redescription)
Echinochasmus milvi Yamaguti, 1939 (original description)
Echinochasmus tobi Yamaguti, 1939 (original description)
Echinoparyphium phalacrocoracis Yamaguti, 1939 accepted as Petasiger phalacrocoracis (Yamaguti, 1939) Skrjabin & Bashkirova, 1956 (original description)
Echinoparyphium recurvatum (von Linstow, 1873) Lühe, 1909 (redescription)
Echinoparyphium recurvatum vanelli Yamaguti, 1939 (original description)
Echinostoma anseris Yamaguti, 1939 (original description)
Echinostoma ralli Yamaguti, 1934 (additional source)
Echinostoma stantschinskii caudatum Yamaguti, 1939 accepted as Echinostoma stantschinskii Semenov, 1927 (original description)
Galactosomum Looss, 1899 (taxonomy source)
Galactosomum phalacrocoracis Yamaguti, 1939 (original description)
Gymnophallus bursicola Odhner, 1900 (redescription)
Gymnophallus macrostoma Yamaguti, 1939 (original description)
Gynaecotyla Yamaguti, 1939 (original description)
Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 (new combination reference)
Gynaecotyla jaegerskioeldi (Travassos, 1921) Yamaguti, 1939 accepted as Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 (new combination reference)
Gynaecotyla simillima (Travassos, 1921) Yamaguti, 1939 accepted as Microphallus simillimus (Travassos, 1921) Martorelli, 1991 (new combination reference)
Gynaecotyla squatarolae (Yamaguti, 1934) Yamaguti, 1939 (redescription)
Gynaecotyla squatarolae (Yamaguti, 1934) Yamaguti, 1939 (new combination reference)
Himasthla kusasigi Yamaguti, 1939 (original description)
Himasthla megacotyla Yamaguti, 1939 (original description)
Holostephanus curonensis (Szidat, 1933) Yamaguti, 1939 (new combination reference)
Holostephanus metorchis Yamaguti, 1939 (original description)
Holostephanus nipponicus Yamaguti, 1939 (original description)
Hysteromorpha triloba (Rudolphi, 1819) Lutz, 1931 (redescription)
Leucochloridium cardis Yamaguti, 1939 accepted as Urogonimus cardis (Yamaguti, 1939) Kagan, 1952 (original description)
Leucochloridium turdi Yamaguti, 1939 accepted as Urogonimus turdi (Yamaguti, 1939) Kagan, 1952 (original description)
Levinseniella bucephalae (Yamaguti, 1935) Yamaguti, 1939 (redescription)
Levinseniella bucephalae (Yamaguti, 1935) Yamaguti, 1939 (new combination reference)
Lyperosomum strigis Yamaguti, 1939 accepted as Brachylecithum strigis (Yamaguti, 1939) Oshmarin, 1963 (original description)
Lyperosomum urocissae Yamaguti, 1939 (original description)
Maritrema eroliae Yamaguti, 1939 (original description)
Mesostephanus milvi Yamaguti, 1939 (original description)
Neodiplostomum strigis Yamaguti, 1939 (original description)
Notocotylus parviovatus Yamaguti, 1934 (redescription)
Ophthalmophagus nasicola Witenberg, 1926 (redescription)
Opisthorchis anatis Yamaguti, 1933 accepted as Amphimerus anatis (Yamaguti, 1933) Gower, 1938 (additional source)
Ornithodiplostomum podicipitis Yamaguti, 1939 accepted as Posthodiplostomum podicipitis (Yamaguti, 1939) Dubois, 1944 (original description)
Oswaldoia corvi Yamaguti, 1939 accepted as Lyperosomum corvi (Yamaguti, 1939) Travassos, 1944 (original description)
Oswaldoia turdi Yamaguti, 1939 accepted as Lyperosomum turdia (Ku, 1938) Travassos, 1944 (original description)
Pachytrema calculus Looss, 1907 (redescription)
Paramonostomum bucephalae Yamaguti, 1935 (redescription)
Paryphostomum radiatum (Dujardin, 1845) Dietz, 1909 accepted as Petasiger radiatus (Dujardin, 1845) Tkach, Kudlai & Kostadinova, 2015 (redescription)
Petasiger grandivesicularis Ishii, 1935 accepted as Neopetasiger grandivesicularis (Ishii, 1935) Baschkirova, 1947 (redescription)
Petasiger lobatus Yamaguti, 1933 accepted as Petasiger pungens (Linstow, 1894) Fuhrmann, 1928 accepted as Neopetasiger pungens (von Linstow, 1894) Tkach, Kudlai & Kostadinova, 2016 (redescription)
Plagiorchis maculosus motacillae Yamaguti, 1939 accepted as Plagiorchis motacillae Yamaguti, 1939 (original description)
Pseudodiplostomum major Yamaguti, 1939 (original description)
Pseudoheterophyes Yamaguti, 1939 accepted as Heterophyopsis Tubangui & Africa, 1938 (original description)
Pseudoheterophyes continua (Onji & Nishio, 1924) Yamaguti, 1939 accepted as Heterophyopsis continua (Onji & Nishio, 1916) Price, 1940 (redescription)
Pseudoheterophyes continua (Onji & Nishio, 1924) Yamaguti, 1939 accepted as Heterophyopsis continua (Onji & Nishio, 1916) Price, 1940 (new combination reference)
Pseudoheterophyes continua major Yamaguti, 1939 (original description)
Pseudospelotrema Yamaguti, 1939 (original description)
Pseudospelotrema (Pseudospelotrematoides) Yamaguti, 1939 (original description)
Pseudospelotrema (Pseudospelotrematoides) cincli Yamaguti, 1939 (original description)
Pseudospelotrema japonicum Yamaguti, 1939 (original description)
Pseudospelotrema uriae Yamaguti, 1939 (original description)
Psilochasmus longicirratus Skrjabin, 1913 accepted as Psilochasmus oxyurus (Creplin, 1825) Lühe, 1909 (redescription)
Pygidiopsis phalacrocoracis Yamaguti, 1939 (original description)
Pygidiopsis summus Onji & Nishio, 1916 accepted as Pygidiopsis summa Onji & Nishio, 1916 (redescription)
Renicola keimahuri Yamaguti, 1939 (original description)
Renicola umigarasu Yamaguti, 1939 (original description)
Spelotrema capellae Yamaguti, 1939 accepted as Microphallus capellae (Yamaguti, 1939) Baer, 1944 accepted as Microphallus pygmaeus (Levinsen, 1881) Baer, 1944 (original description)
Spelotrema longicolle Yamaguti, 1939 accepted as Microphallus longicollis (Yamaguti, 1939) Baer, 1944 (original description)
Stephanoprora magniovata Yamaguti, 1939 accepted as Mesorchis magniovatus (Yamaguti, 1939) Cajiao-Mora & Bullard in Cajiao-Mora & Bullard in Cajiao-Mora, Dutton, Jacobs, Beytell, Netherlands, Du Preez & Bullard, 2025 (original description)
Stephanoprora pendula (Looss, 1899) Odhner, 1910 accepted as Mesorchis pendulus (Looss, 1899) Dietz, 1909 (redescription)
Stictodora Looss, 1899 (taxonomy source)
Stictodora japonica Yamaguti, 1939 (original description)
Stictodora lari Yamaguti, 1939 (original description)
Stictodora mergi Yamaguti, 1939 (original description)
Strigea falconis japonensis Yamaguti, 1939 accepted as Strigea falconis mcgregori Tubangui, 1932 (original description)
Uvitellina pseudocotylea Witenberg, 1923 (redescription)