Tetrameres sp.

Host: Coscoroba coscoroba . SI: proventriculus. Lo: La Plata Zoological Garden, La Plata, Buenos Aires Province. Reference: Boero & Led (1968).

Host: Phoenicopterus chilensis . SI: proventriculus. Lo: La Plata Zoological Garden, Buenos Aires Province. Reference: Boero & Led (1968).