Key to the Mediterranean species of Pontocrates Boeck

1. Pereopods 3–4 carpus short only a little longer than broad..................................................... 2

- Pereopods 3–4 carpus much longer than broad............................ P. altamarinus (Spence Bate & Westwood)

2. Gnathopod 1 merus with long distal finger-like extension...................................................... 3

- Gnathopod 1 merus distally blunt or with small short distal spine.............................. P. norwegicus (Boeck)

3. Coxa 2 posterior margin sinuous.................................................... P. arenarius (Spence Bate)

- Coxa 2 posterior margin substraight........................................................ P.marmario sp. nov.