[n = 9]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| 1900-1924 | USA | Argentina | not established | |
| unknown | Unknown | Chile | unknown | |
| 1901 - 1902 | British Columbia | New Zealand | established | probably none |
| 1906 | unknown | New Zealand | established | unknown |
| 1933 | USA | Finland | not established | unknown |
| 1957 | Canada | Japan | unknown | |
| 1959 | USA | Sweden | established | |
| 1960 | USA | Denmark | not established | |
| 1968 | Japan | India | probably not established | probably none |