[n = 6]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | Unknown | Ontario | not established | |
| unknown | Unknown | Croatia | probably established | unknown |
| unknown | Unknown | Uzbekistan | established | |
| 1920 - 1929 | Europe | UK | established | |
| 1920 - 1929 | Europe | USA | established | unknown |
| 1980 - 1989 | Eastern Europe | Italy | established | unknown |