The present paper comprises a systematic survey of trematodes found in 13 species of freshwater fishes in Venezuela collected in 1992, 1996 and 2001. The following 15 trematode species were recorded: Adults: Genarchella venezuelaensis sp. n., Thometrema dissimilis sp. n., Megacoelium spinicavum Thatcher et Varella, 1981, Doradamphistoma bacuense Thatcher, 1999, Crassicutis cichlasomae Manter, 1936, Parspina carapo Ostrowski de Núñez, Arredonto et Gil de Pertierra, 2011, Phyllodistomoides hoplerythrini sp. n. Larvae (metacercariae): Clinostomatopsis sorbens (Braun, 1899), Clinostomum marginatum (Rudolphi, 1819), C. detruncatum Braun, 1899, Ithyoclinostomum dimorphum (Diesing, 1850), Odhneriotrema microcephala (Travassos, 1922), Tylodelphys sp., Posthodiplostomum sp., Sphincterodiplostomum sp. All these parasites are reported from Venezuela for the first time and many of these findings represent new host records. The new species G. venezuelaensis sp. n., T. dissimilis sp. n. and P. hoplerythrini sp. n. were collected from the accessory respiratory organ of Loricariichthys brunneus (Hancock) (Loricariidae), from the stomach of Hoplerythrinus unitaeniatus (Spix et Agassiz) (Erythrinidae) and from the intestine of H. unitaeniatus, respectively. All parasites are briefly described and illustrated and problems concerning their morphology, taxonomy, hosts and geographical distribution are discussed. Megacoelium spinispecum Thatcher et Varella, 1981 is considered a junior synonym of M. spinicavum Thatcher et Varella, 1981, and Crassicutis opisthoseminis Bravo-Hollis et Arroyo, 1962 as a junior synonym of C. cichlasomae Manter, 1936.

Institute of Parasitology Biology Centre of the Czech Academy of Sciences Ceske Budejovice Czech Republic

State Veterinary Institute Ceske Budejovice Czech Republic

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Achatz T.J., Bell J.A., Melo F.T.V., Fecchio A., Tkach V.V. 2021: Phylogenetic position of Sphincterodiplostomum Dubois, 1936 (Digenea: Diplostomoidea) with description of a second species from Pantanal, Brazil. J. Helminthol. 95: e6. DOI

Acosta A.A., Caffara M., Fioravanti M.L., Utsunomia R., Zago A.C. Franceschini L., da Silva R.J. 2016: Morphological and molecular characterization of Clinostomum detruncatum (Trematoda: Clinostomidae) metacercariae infecting Synbranchus marmoratus. J. Parasitol. 102: 151-156. DOI

Benigno R.N.M., Knoff M., Matos E.R., Gomes D.C., Pinto R.M., SãO Clemente S.C. 2014: Morphological aspects of Clinostomidae metacercariae (Trematoda: Digenea) in Hoplerythrinus unitaeniatus and Hoplias malabaricus (Pisces: Erythrinidae) of the Neotropical region, Brazil. An. Acad. Bras. Cienc. 86: 733-744. DOI

Braun M.G.C.C. 1899: Über Clinostomum Leidy. Zool. Anz. 22: 484-493.

Bravo-Hollis M., Arroyo G. 1962: Tremátodos de peces de Costa Rica. I. Sobre dos especies del género Crassicutis Manter, 1936 (Lepocreadiidae Nicoll, 1914) del intestino de Cichlasoma sp. Rev. Biol. Trop. 10: 229-235.

Bray R.A., de Chambrier A., Vaucher C. 1996: Crassicutis intermedius (Szidat, 1954) n. comb. and Procaudotestis uruguayensis Szidat, 1954 (Digenea: Homalometridae) from siluriform fishes in Paraguay. Syst. Parasitol. 35: 119-126. DOI

Bray R.A., Gibson D.I., Jones A. (Eds.) 2008: Keys to the Trematoda. Volume 3. CAB International and Natural History Museum, London, 824 pp. DOI

Briosio-Aguilar R., García-Varela M., Hernández-Mena D.I., Rubio-Godoy M., Pérez-Ponce de León G. 2019: Morphological and molecular characterization of an enigmatic clinostomid trematode (Digenea: Clinostomidae) parasitic as metacercariae in the body cavity of freshwater fishes (Cichlidae) across Middle America. J. Helminthol. 93: 461-474. DOI

Brooks D.R. 1977: A new genus and two new species of trematodes from characid fishes in Colombia. Trans. Amer. Microsc. Soc. 96: 267-270. DOI

Caffara M., Locke S.A., Gustinelli A., Marcogliese D.J., Fioravanti M.L. 2011: Morphological and molecular differentiation of Clinostomum complanatum and Clinostomum marginatum (Digenea: Clinostomidae) metacercariae and adults. J. Parasitol. 97: 884-891. DOI

Choudhury A., Aguirre-Macedo M.L., Curran S.S., Ostrowski de Núñez M., Overstreet R.M., Pérez-Ponce de León G., Santos C.P. 2016: Trematode diversity in freshwater fishes of the Globe II: 'New World'. Syst. Parasitol. 93: 271-282. DOI

Choudhury A., García-Varela M., Pérez-Ponce de León G. 2017: Parasites of freshwater fishes and the Great American Biotic Interchange: a bridge too far? J. Helminthol. 91: 174-196. DOI

Curran S.S., Overstreet R.M., Font W.F. 2002: Thometrema lotzi sp. nov. (Digenea, Derogenidae) from freshwater and brackish water fishes of Louisiana and Mississippi (USA). Acta Parasitol. 47: 14-19.

Dias K.G.A., Pérez-Ponce de León G., da Silva R.J., Vieira D.H.M.D., Leite L.A.R., de Azevedo R.K., Abdallah V.D. 2023: Morphological and molecular data on Phyllodistomum (Digenea: Gorgoderidae) from Brazil, with the description of a new species parasitizing Hoplias malabaricus (Bloch, 1794) (Osteichthyes, Erythrinidae). J. Helminthol. 97: e68. DOI

Drago F.B., Lunaschi L.I. 2008: Description of a new species of Tylodelphys (Digenea, Diplostomidae) in the wood stork, Mycteria americana (Aves, Ciconiidae) from Argentina. Acta Parasitol. 53: 263-267. DOI

Dzikowski R., Levy M.G., Poore M.F., Flowers J.R., Paperna I. 2004: Clinostomum complanatum and Clinostomum marginatum (Rudolphi, 1819) (Digenea: Clinostomidae) are separate species based on differences in ribosomal DNA. J. Parasitol. 90: 413-414. DOI

Fernandes B.M.M., Kohn A. 2001: On some trematode parasites of fishes from Paraná River. Braz. J. Biol. 61: 461-466. DOI

Fischthal J.H., Nasir P. 1974: Some digenetic trematodes from freshwater and marine fishes of Venezuela. Norw. J. Zool. 22: 71-80.

Froese R., Pauly D. (Eds.) 2023: FishBase. World Wide Web electronic publication. http://www.fishbase.org, version 07/2023.

Gibson D.I., Jones A., Bray R.A. (Eds.) 2002: Keys to the Trematoda. Volume 1. CABI Publishing and The Natural History Museum, London, 521 pp. DOI

Gibson D.I., Bray R.A. 1979: The Hemiuroidea: terminology, systematics and evolution. Bull. Br. Mus. Nat. Hist. (Zool.) 36: 35-146. DOI

Heyneman D., Brenes R.R., Diaz-Ungria C. 1960: Trematodos de Venezuela II - Algunos trematodos de peces, reptiles y aves con descripción de una nueva especie del genero Lubens. Mem. Soc. Cien. Nat. La Salle 20: 138-149.

Kohn A., Fernandes B.M.M. 1988: Revision of the Brazilian species of the genus Halipegus Looss, 1899 (Trematoda: Derogenidae). Syst. Parasitol. 11: 129-137. DOI

Kohn A., Fernandes B.M.M., Cohen S.C. 2007: South American Trematodes Parasites of Fishes. Fundação Oswaldo Cruz and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Rio de Janeiro, 318 pp.

Kohn A., Fernandes B.M.M., Gibson D.I., Fróes O.M. 1990: On the Brazilian species of halipegine genera (Trematoda: Derogenidae) from fishes, with new morphological data, hosts and synonyms. Syst. Parasitol. 16: 201-211. DOI

Kohn A., Fróes O.M., Fernandes B.M.M., Abramson B. 1983: Redescription of Thometrema magnifica (Szidat, 1954) Gibson & Bray, 1979 (Trematoda: Hemiuroidea), with comments on the validity of T. portoalegrensis Amato, 1968. J. Helminthol. 57: 143-148. DOI

Leidy J. 1856: A synopsis of Entozoa and some of their ecto-congeners observed by the author. Proc. Acad. Nat. Sci. Philadelphia 8: 42-58.

Locke S.A., Caffara M., Marcogliese D.J., Fioravanti M.L. 2015: A large-scale molecular survey of Clinostomum (Digenea: Clinostomidae). Zool. Scr. 44: 203-217. DOI

López-Hernández D., Locke S.A., Lane de Melo A., Robelo É.M.L., Pinto H.A. 2018: Molecular, morphological and experimental assessment of the life cycle of Posthodiplostomum nanum Dubois, 1937 (Trematoda: Diplostomidae) from Brazil, with phylogenetic evidence of the paraphyly of the genus Posthodiplostomum Dubois, 1936. Inf. Gen. Evol. 63: 95-103. DOI

Lunaschi L.I. 1990: Helmintos parasitos de peces de agua dulce de la Argentina IX. El género Genarchella Travassos, Artigas y Pereira, 1928, y descripción de G. parva Travassos, Artigas y Pereira, 1928, y G. fagilis [sic] sp. nov. (Trematoda, Derogenidae). Stud. Neotrop. Fauna Env. 25: 125-132. DOI

Lunaschi L.I., Drago F.B. 2001: Thometrema patagonica (Szidat, 1956) n. comb. para Derogenes patagonicus (Szidat) Yamaguti, 1971 (Trematoda, Derogenidae). Physis (Buenos Aires), Sec. B, 58: 134-135.

Lunaschi L.I., Drago F.B. 2009: Digenean parasites of six species of birds from Formosa Province, Argentina. Rev. Mex. Biodiv. 80: 39-46.

Manter H.W. 1936: Some trematodes of cenote fish from Yucatan. In: A. P. Pearse, E.P. Creaser and F. G. Hall (Eds.) The Cenotes of Yucatan: A Zoological and Hydrographic Survey. Carnegie Institution of Washington, pp. 33-38.

Montes M.M., Barneche J., Pagano L., Ferrari W., Martorelli S.R., Pérez-Ponce de León G. 2021: Molecular data reveal hidden diversity of the genus Clinostomum (Digenea, Clinostomidae) in Argentina, with the description of a new species from Ardea cocoi (Ardeidae). Parasitol. Res. 120: 2779-2791. DOI

Montes M.M., García I., Paredes del Puerto J.M., Barneche J.A., Ibañez Shimabukuro M., Reig Cardarella G.F., Martorelli S.R., Pérez-Ponce de León G. 2023: Integrative analysis of new Clinostomum metacercariae (Digenea, Clinostomidae) using COI mtDNA and morphology rises the number of lineages found in South American freshwater fishes. J. Helminthol. 97: e85. DOI

Montes M.M., Plaul S.E., Croci Y., Waldbilling M., Ferrari W., Topa E., Martorelli S.R. 2020: Pathology associated with three new Clinostomum metacercariae from Argentina with morphological and DNA barcode identification. J. Helminthol. 94. DOI

Moravec F., Baruš V. 1971: Studies on parasitic worms from Cuban fishes. Acta Soc. Zool. Bohemoslov. 35: 56-74.

Moravec F., Prouza A. 2003: New data on the morphology of two nematode species from Caiman crocodilus from Venezuela. Acta Parasitol. 48: 111-118.

Moravec F., Prouza A., Royero R. 1996: Guyanema longispiculum sp. n. (Nematoda: Dracunculoidea) from Loricariichthys brunneus (Pisces) in Venezuela. Folia Parasitol. 43: 227-231.

Moravec F., Prouza A., Royero R. 1997: Some nematodes of freshwater fishes in Venezuela. Folia Parasitol. 44: 33-47.

Morey G.A.M. 2018: Metacercariae of Tylodelphys sp. (Trematoda: Diplostomidae) parasite of Brochis multiradiatus and Corydoras splendens (Siluriformes: Callichthyidae) from the Peruvian Amazon. Acta Sci., Biol. Sci. 40: 2018. DOI

Nasir P., Gómez Y. 1976: Carassotrema tilapiae n. sp. (Haploporidae Nicoll, 1914) from the freshwater fishe, Tilapia mossambica (Peters), in Venezuela. Riv. Parassitol. 37: 207-228.

Nasir P., Velásquez Y.G. 1977: Ghaziatrema porzanae sp. nov., gen. nov., subf. nov. (Ghaziatrematinae, Hemiuridae Luehe, 1901) from freshwater fish, Astyanax bimaculatus (L.), in Venezuela. Universidad Nacional Autónoma de México, Instituto de Biología, Publicaciones especiales 4: 267-271.

Nigrelli R.F. 1936: Some tropical fishes as hosts for the metacercaria of Clinostomum complanatum (Rud. 1814) (C. marginatum Rud. 1819). Zoologica: Sci. Contr. New York Zool. Soc. 21: 251-256. DOI

Ostrowski de Núñez M.C., Arredonto N.J., Gil de Pertierra A.A. 2011: Two new species of Parspina Pearse, 1920 (Digenea: Cryptogonimidae) from freshwater fishes (Gymnotiformes) of the Paraná River basin in Argentina. Syst. Parasitol. 80: 67-79. DOI

Ostrowski de Núñez M.C., Arredonto N.J., Gil de Pertierra A.A. 2017: Adult trematodes (Platyhelminthes) of freshwater fishes from Argentina: a checklist. Rev. Suisse Zool. 124: 91-113.

Pantoja C., Scholz T., Luque J.L., Jones A. 2019: First molecular assessment of the interrelationships of cladorchiid digeneans (Digenea: Paramphistomoidea), parasites of Neotropical fishes, including descriptions of three new species and new host and geographical records. Folia Parasitol. 66: 011. DOI

Pantoja C., Scholz T., Luque J.L., Pérez-Ponce de León G. 2021: Molecular and morphological evidence of a new species of Crassicutis Manter, 1936 (Digenea), a parasite of cichlids in South America. Parasitol. Res. 120: 2429-2443. DOI

Pearse A.S. 1920: The Fishes of Lake Valencia, Venezuela. Univ. Wiscon. Stud. Sci. 1, No. 12, Madison, 51 pp. DOI

Pérez-Ponce de León G., Razo-Mendivil U., Rosas-Valdez R., Mendoza-Garfias B., Mejía-Madrid H. 2008: Description of a new species of Crassicutis Manter, 1936, parasite of Cichlasoma beani Jordan (Osteichthyes: Cichlidae) in Mexico, based on morphology and sequences of the ITS1 and 28S ribosomal RNA genes. J. Parasitol. 94: 257-263. DOI

Peters L.E. 1957: An analysis of the trematode genus Allocreadium Looss with the description of Allocreadium neotenicum sp. nov. from water beetles. J. Parasitol. 43: 136-142. DOI

Razo-Mendivil U., Vázquez-Dominguez E., Rosas-Valdez R., Pérez-Ponce de León G., Nadler S.A. 2010: Phylogenetic analysis of nuclear and mitochondrial DNA reveals a complex of cryptic species in Crassicutis cichlasomae (Digenea: Apocreadiidae), a parasite of Middle-American cichlids. Int. J. Parasitol. 40: 471-486. DOI

Ritossa L., Flores V., Viozzi G. 2013: Life-cycle stages of a Posthodiplostomum species (Digenea: Diplostomidae) from Patagonia, Argentina. J. Parasitol. 99: 777-780. DOI

Rocha R.S., Pelegrini L.S., Camargo A.A., Abdallah V.D., de Azevedo R.K. 2015: Sphincterodiplostomum musculosum (Digenea, Diplostomidae) in Geophagus brasiliensis (Perciformes, Cichlidae) collected in a lake at Dois Córregos, São Paulo, Brazil. Ciênc. Rural 45: 2223-2228. DOI

Rosser T.G., Woodyard E.T., Mychajlonka M.N., King D.T., Griffin M.J., Gunn M.A., López-Porras A. 2020: Ithyoclinostomum yamagutii n. sp. (Digenea: Clinostomidae) in the great blue heron Ardea herodias L. (Aves: Ardeidae) from Mississippi, USA. Syst. Parasitol. 97: 69-82. DOI

Rudolphi C.A. 1819: Entozoorum Synopsis cui Accedunt Mantesia Duplex et Indices Locupletissimi. Berolini, 811 pp. DOI

Scholz T., Salgado-Maldonado G. 1994: On Genarchella isabellae (Digenea: Derogenidae) from cichlid and pimelodid fishes in Mexico. J. Parasitol. 80: 1013-1017. DOI

Scholz T., Vargas-Vásquez J., Moravec F., Vivas-Rodríguez C., Mendoza-Franco E. 1995a: Cenotes (sinkholes) of the Yucatan Peninsula, Mexico, as a habitat of adult trematodes of fish. Folia Parasitol. 42: 37-47.

Scholz T., Vargas-Vásquez J., Moravec F., Vivas-Rodríguez C., Mendoza-Franco E. 1995b: Metacercariae of trematodes of fishes from cenotes (sinkholes) of the Yucatan Peninsula, Mexico. Folia Parasitol. 42: 173-192.

Scholz T., Vargas-Vázquez J., Salgado-Maldonado G. 1995c: Revision of Genarchella species (Digenea: Derogenidae) parasitizing freshwater fishes in Mexico and Central America. J. Nat. Hist. 29: 1403-1417. DOI

Sereno-Uribe A.L., García-Varela M., Pinacho-Pinacho C.D., Pérez- Ponce de León G. 2018: Three new species of

Clinostomum Leidy, 1856 (Trematoda) from Middle American fish-eating birds. Parasitol. Res. 117: 2171-2185. DOI

Sereno-Uribe A.L., Pinacho-Pinacho C.D., García-Varela M., Pérez-Ponce de León G. 2013: Using mitochondrial and ribosomal DNA sequences to test the taxonomic validity of Clinostomum complanatum Rudolphi, 1814 [sic] in fish-eating birds and freshwater fishes in Mexico, with the description of a new species. Parasitol. Res. 112: 2855-2870. DOI

Simoes M.B., Alvesa P.V., López-Hernández D., Couto E.A., Moreira N., Pinto H.A. 2022: Size does not matter: molecular phylogeny reveals one of the largest trematodes from vertebrates, the enigmatic Ithyoclinostomum dimorphum, as a species of Clinostomum (Trematoda: Clinostomidae). Int. J. Parasitol. Parasites Wildl. 19: 84-88. DOI

Skryabin K.I. 1947: [Trematodes of Animals and Man.] Osnovy Trematodologii I. Publ. House of the USSR Acad. Sci., Moscow-Leningrad, 515 pp. (In Russian.)

Skryabin K.I. 1960: [Trematodes of Animals and Man.] Osnovy Trematodologii XVII. Publ. House of the USSR Acad. Sci., Moscow, 643 pp. (In Russian.)

Skryabin K.I. 1974: [Trematodes of Animals and Man.] Osnovy Trematodologii XXV. Nauka, Moscow, 304 pp. (In Russian.)

Stiles C.W., Hassall A. 1894: A new species of fluke (Distoma [Dicrocoelium] complexum found in cats in the United States) with bibliographies and diagnoses of allied forms. Vet. Mag. 1: 413-432.

Szidat L. 1954: Tremátodos nuevos de peces de agua dulce de la República Argentina y un intento para aclarar su carácter marino. Rev. Int. Nac. Inves. Cienc. Nat. Argen. Bernardino Rivadávia. Zool. 3: 1-85.

Szidat L. 1969: Structure, development, and behavior of new strigeatoid metacercariae from subtropical fishes of South America. J. Fish. Res. Bd. Canada 26: 753-786. DOI

Tavares-Dias M., Silva L.M.A., Florentino A.C. 2023: Metacercariae of Clinostomum Leidy, 1856 (Digenea: Clinostomidae) infecting freshwater fishes throught Brazil: infection patterns, parasite-host interactions, and geographic distribution. Stud. Neotr. Fauna Env. 58: 116-129. DOI

Thatcher V.E. 1979: O primeiro trematódeo negro, Amazonadistoma negrensis n. gen., n. sp. (Digenea: Gorgoderidae), parasita de um peixe amazônico. Acta Amazon. 9: 389-392. DOI

Thatcher V.E. 1993: Trematódeos Neotropicais. Instituto Nacional de Pesquisas da Amazônia, Manaus, 553 pp.

Thatcher V.E. 1999: Surface morphology of some amphistomes (Trematoda) of Amazonian fishes and the description of a new genus and species. Acta Amazon. 29: 607-614. DOI

Thatcher V.E. 2006: Amazon Fish Parasites. Second Edition. Aquatic Biodiversity in Latin America (Eds. J. Adis, J.R. Arias, G. Rueda-Delgado and K.M Wantzen), Vol. 1. Pensoft, Sofia-Moscow, 508 pp.

Thatcher V.E., Varella A.B. 1981: Duas novas espécies de Megacoelium Szidat, 1954 (Trematoda: Haploporidae), parasitas estomacais de peixes da Amazônia Brasileira, com uma redefinição do gênero. Acta Amazon. 11: 285-289. DOI

Travassos L. 1926: Trematodeos intestinaes dos batrachios do Brasil. Scient. Med. Rio de Janeiro 4: 89.

Travassos L. 1940: Relatório da terceira excursão à zona da Estrada de Ferro Noroeste do Brasil realizada em Fevereiro e Março de 1940. Mem. Inst. Oswaldo Cruz 35: 607-696. DOI

Travassos L., Freitas TJ.F, Mendonça J.M. 1964: Relatório da excursão do Instituto Oswaldo Cruz ao Parque de Reserva e Refúgio Soóretama, no Estado do Espírito Santo, em outubro de 1963. Bol. Mus. Biol., Zool. Nr. 23, pp. 1-26 + 4

Tsuchida K., Flores V., Viozzi G., Rauque C., Urabe M. 2021a: Hemiuroidean trematodes from freshwater Patagonian fishes: description of a new species, distribution and molecular phylogeny. Parasitol. Res. 120: 1219-1232. PubMed DOI

Tsuchida K., Urabe M., Viozzi G., Rauque C., Flores V. 2021b: A new species of hemiuroidean trematode from Hatcheria macraei (Siluriformes, Trichomycteridae) and Heleobia hatcheri (Gastropoda, Cochliopidae) in a Patagonian river. Parasitol. Res. 120: 2523-2532. PubMed DOI

Van Cleave H.J., Mueller J.F. 1934: Parasites of Oneida Lake fishes III. A biological and ecological survey of the worm parasites. Roosevelt Wild Life Ann. 3: 161-334.

Volonterio O., Pérez-Ponce de León G. 2005: Description od Dendrorchis retrobiloba n. sp. (Digenea: Gorgoderidae) from Astyanax fasciatus (Teleostei: Characidae) from southern Uruguay, with an emended diagnosis of the genus Dendrorchis. J. Parasitol. 91: 1204-1207. PubMed DOI

Yamaguti S. 1971: Synopsis of Digenetic Trematodes of Vertebrates. Volume I. Keigaku Publishing Co., Tokyo, 1074 pp.

Zago A.C., Franceschini L., Ramos I.P., Zica É.O.P., Wunderlich A.C., Carvalho E.D., da Silva R.J. 2013: Sphincterodiplostomum musculosum (Digenea, Diplostomidae) infecting Steidachnerina insculpta (Characiformes, Curimatidae) in the Chavantes Reservoir, Southeastern Brazil. Rev. Bras. Parasitol. Vet. 22: 98-103. PubMed DOI