Neoechinorhynchus (Neoechinorhynchus) macronucleatus Machado Filho, 1954

Actinopterygii Lycengraulis grossidens (Spix & Agassiz) ( Clupeiformes, Engraulidae). SI: intestine. SD: adult. L: Entre Ríos Province: Paraná-Guazú River (33º54’S, 58º52’W). R: Arredondo and Gil de Pertierra (2012), Arredondo (2013). C: voucher (MANC-Pa 518/1-2).