Topography and ultrastructure of the tegument of Aphallus tubarium (Rodolphi, 1819) Poche, 1926 (Digenea: Cryptogonimidae), intestinal parasite of the common Dentex dentex (Linnaeus 1758) from Valinco Gulf - Antonelli, L.; Quilichini, Y.; Foata, J.; Marchand, B. (Acta Parasitologica, 2014)