[n = 13]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | Unknown | Germany | probably not established | |
| 1920 - 1929 | USSR | Finland | probably not established | unknown |
| 1948 - 1952 | Unknown | Latvia | established | unknown |
| 1980 - 1989 | Europe | UK | established | unknown |
| 1980 - 1997 | Russia | Estonia | not established | none |
| 1763 | Unknown | Russia | not established | unknown |
| 1837 | Unknown | Poland | probably not established | unknown |
| 1885 | Unknown | Lithuania | not established | |
| 1887 | Unknown | Sweden | established | unknown |
| 1976 | Hungary | France | not established | |
| 1993 | Russian Federation | Netherlands | not established | unknown |
| 1997 | Russian Federation | China | unknown | no data |
| 2005 | Unknown | Denmark | not established | unknown |