[n = 7]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | Unknown | France | unknown | |
| unknown | Unknown | Norway | established | |
| unknown | Unknown | Sweden | unknown | |
| unknown | Unknown | Switzerland | established | no data |
| 1980 - 1989 | Europe | UK | established | unknown |
| 1896 - 1899 | Unknown | Finland | established | probably none |
| 1910 | Europe | Belgium | established | probably some |