Magnivitellinum corvitellinum Lacerda, Takemoto & Pavanelli, 2009

Material deposited: CHIOC (type material), MACN- Pa 611/1‒2 (new voucher material), USNPC (type material).

Host: Hoplosternum littorale (Hancock) ( Siluriformes: Callichthyidae) (type host, Brazil).

Localities: Upper Paraná River floodplain, Brazil (type locality); Paraná-Guazú River**, Entre Ríos Province.

Site of infection: Middle and posterior part of intestine.

References: Lacerda et al. (2009), Arredondo (2013).

Remarks: First mention of this species in Argentina.