[n = 6]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | to be filled | to be filled | established | unknown |
| unknown | Unknown | Colombia | established | |
| unknown | Unknown | Madagascar | established | |
| 1970 - 1979 | Unknown | Philippines | unknown | |
| 1971 | Unknown | Canada | unknown | |
| 1971 | Unknown | USA | unknown |