Steganoderma macrophallus Szidat & Nani, 1951
Material deposited: MACN-Pa (type material).
Host: Basilichthys microlepidotus (Jenyns) (= Basilichthys microlepidota Girard) ( Atheriniformes: Atherinopsidae) (type host).
Localities: Limay River (Plottier), Neuquén Province (type locality); Quequén River (Buenos Aires Province).
Site of infection: Intestine.
Reference: Szidat & Nani (1951).