Allogastrocotyle bivaginalis is a species of monogenean flatworm, which is parasitic on the gills of a marine fish.

[1] The species was described and illustrated from two specimens from the gills the rough scad Trachurus lathami (Carangidae) off Venezuela, and designated as the type species of the genus.

[1] In 2019, Bouguerche et al. examined specimens of monogeneans similar to Allogastrocotyle bivaginalis, collected from the gills of the Blue jack mackerel Trachurus picturatus (Carangidae) from off the Algerian coast, Mediterranean Sea.

[1] The type-host is the rough scad Trachurus lathami (Carangidae).

[1] The species is also present in the Mediterranean Sea, on another host, the Blue jack mackerel Trachurus picturatus.