Adult Trematodes (Platyhelminthes) of freshwater fishes from Argentina: a checklist Author Margarita Ostrowski de Núñez Author Nathalia J. Arredondo Author Alicia A. Gil de Pertierra text Revue suisse de Zoologie 2017 2017-03-31 124 1 91 113 journal article 31645 10.5281/zenodo.1040686 25402b49-ac0b-4370-925e-d2d7b6438e9b 0035-418 1040686 Genarchella genarchella (Travassos, Artigas & Pereira, 1928 ) Halipegus genarchella Travassos , Artigas & Pereira, 1928 Genarchella dubia Travassos , Artigas & Pereira, 1928 Material deposited: CHIOC (type material), MACN- Pa 600, 601, 602, 603 (new voucher material). Hosts: Oligosarcus sp. (= Acestrorhamphus sp.) (type host, Brazil); O. jenynsii (Günther) , Charax stenopterus (Cope) (= Asiphonichthys stenopterus Cope ) ( Characidae : Characidae ), Salminus brasiliensis , Leporinus friderici (Bloch) ( Characidae : Anostomidae ); Iheringichthys labrosus * , Luciopimelodus pati *, Pimelodus albicans , P. maculatus (= Pimelodus clarias Linnaeus ). Localities: Emas Pirassununga, São Paulo State, Brazil (type locality); Middle Paraná River, El Dorado, Misiones Province; Colastiné River** (tributary of Paraná River), Santa Fe Province; Paraná-Guazú River**, Entre Ríos Province; Lujan River (Luján), Los Talas (Berisso), and Chascomús Lagoon (Chascomus), Buenos Aires Province. Site of infection: Esophagus, stomach, intestine. Life cycle: IH1 and IH2 Heleobia australis (d’Orbigny) (see Szidat, 1956 ); H. parchappii (see Martorelli, 1989 ). References: Szidat (1956a) , Martorelli (1989) , Kohn et al. (1990) , Arredondo (2013) . Remarks: New hosts and locality records. Szidat (1956a) mentioned H. australis as intermediate host, but this is a misidentification (see Martorelli, 1989 ). The progenetic metacercaria produces viable eggs, which are infective for the snail. The life cycle could be maintained without a vertebrate host for several years ( Martorelli, 1989 ).