Dadaytrema gracilis Lunaschi, 1989

Material deposited: MACN-Pa 594/1‒2 (new voucher material), MLP (type material).

Hosts: Pimelodella gracilis (Valenciennes) (type host) ( Siluriformes: Heptapteridae), Pterodoras granulosus * (Valenciennes) ( Siluriformes: Doradidae).

Localities: Brazo Chico Stream (tributary of Uruguay River), Entre Rios Province (type locality), Paraná- Guazú River**, Entre Ríos Province.

Site of infection: Middle and posterior part of intestine.

References: Lunaschi (1989a), Arredondo (2013).

Remarks: New host and locality records. The present authors also recovered D. gracilis in the type host.