Genarchella fragilis Lunaschi, 1990
Material deposited: MLP (type material).
Hosts: Astyanax fasciatus (Cuvier), A. abramis (Jenyns) (type host not assigned) ( Characiformes: Characidae).
Locality: Doña Flora Stream (Ensenada), Buenos Aires Province (type locality).
Site of infection: Stomach.
Reference: Lunaschi (1990).