[n = 4]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| 1953 | Atlantic | Algeria | probably established | |
| 1960 | Atlantic | Morocco | probably established | |
| 1993 | Atlantic | Balearic Islands, Spain | probably established | |
| 1998 | Atlantic | Gulf of Lions and Provence, France | probably established |