Acanthocardia tuberculata from the Adriatic (collage)
Acanthocardia tuberculata (Linnaeus, 1758) from Grado, Adriatic Sea. The appearance of this species is quite variable. There are descriptions of numerous variations like for example:
var. muticum (Bucquoi, Dautzenberg et Dollfus): without tubercles
var. elegans (Brusina): with tubercles
var. vittatum (Brusina): decorated with a binder
var. album (Monterosato): albinotic
var. fuscum (Petratx): brown colour
