[n = 6]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | USA | Canada - British Columbia | established | unknown |
| unknown | USA | Mexico | established | |
| unknown | USA | Panama | established | |
| 1927 | USA | Japan | not established | |
| 1961 | USA | Morocco | not established | |
| 1989 | USA | China | unknown |