Lobatostoma jungwirthi Kritscher, 1974

Material deposited: MACN-Pa 582/1‒5 (new voucher material), MLP, NHM (type material).

Hosts: Gymnogeophagus rhabdotus (Hensel) (= Geophagus brachyurus Cope) (type host, Brazil), Australoheros facetus (Jenyns) [= Cichlasoma facetum (Jenyns)] ( Perciformes: Cichlidae).

Life cycle: IH1 Heleobia castellanosae Gaillard, Heleobia parchappii (d´Orbigny) (Gastropoda: Rissooidea) (natural hosts); FH A. facetus (natural host), Gymnogeophagus meridionalis Reis & Malabarba (experimental host).

Localities: Rio dos Sinos (San Leopoldo), Rio Grande do Sul State, Brazil (type locality); Cantera (quarry) (Berisso), Chascomús Lagoon (Chascomús) and Saladita Pond (Avellaneda), Buenos Aires Province; Tres de Febrero Park (artificial pond), Buenos Aires City.

Site of infection: Gonads and digestive gland in the molluscan host, posterior intestine and rectum in the cichlid fishes.

References: Kritscher (1974) Lunaschi (1984a), Zylber & Ostrowski de Núñez (1999), Paola & Damborenea (2001).

Remarks: Some specimens began egg production in the molluscan host. Paola & Damborenea (2001) studied the tegument surface of the species.