Plehniella coelomicola Szidat, 1951

Material deposited: MACN-Pa 614/1‒2 (type and new voucher material), MLP.

Hosts: Iheringichthys labrosus (type host), Pimelodus albicans, P. maculatus, Pseudoplatystoma corruscans *, Hoplosternum littorale *.

Localities: La Plata River in front of Buenos Aires City (type locality), Paraná River**, Italia Port, Corrientes City, Corrientes Province, Paraná-Guazú River**, Entre Ríos Province, Argentina.

Site of infection: Coelomic cavity.

References: Szidat (1951), Lunaschi (1985b), Avendaño de MacIntosh & Ostrowski de Núñez (1998), Arredondo (2013), Orélis-Ribeiro & Bullard (2015).

Remarks: New hosts and localities records. Erroneously referred to as P. coelomica by Lunaschi (1985b) and Avendaño de MacIntosh & Ostrowski de Núñez (1998).