[n = 6]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| Pre 18th century | England | Ireland | established | unknown |
| unknown | Unknown | Italy | established | some |
| unknown | Unknown | Norway | established | |
| unknown | Unknown | Spain | established | |
| 1896 | Unknown | Portugal | established | unknown |
| 1935 | France | Morocco | established |