Ventral edge of the antennal scale in A. bihariensis (left) and A. torrentium (right). The Idle Crayfish lacks the denticulations present in the Stone Crayfish.
Pârvulescu L. (2019): Introducing a new Austropotamobius crayfish species (Crustacea, Decapoda, Astacidae): a Miocene endemism of the Apuseni Mountains, Romania. Zoologischer Anzeiger 279: 94–102.