[n = 11]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | Unknown | Uzbekistan | established | |
| unknown | Unknown | Russia | probably not established | |
| unknown | Unknown | Hungary | not established | |
| unknown | Unknown | established | ||
| 1971 | USA | USSR | not established | |
| 1977 | Unknown | Bulgaria | established | |
| 1978 | North America | Romania | probably established | probably none |
| 1978 | Former USSR | Romania | probably established | probably none |
| 1981 | USSR | Cuba | established | |
| 1985 | USSR | Czech Republic | not established | no data |
| 1986 | USSR | Poland | probably established | probably none |