| Invasion information | ||
| Range in Japan | There are records of breeding in Tokyo, and occurrences in Kanagawa and Hyogo Prefs. |
|
| Origin | Unknown. | |
| Date | In Kanagawa, observed since 1974. In Kanto District, observed in 1961 to 1981. | |
| Route | Deliberate: Escape or release of pet animal. | |
| Impact | Unknown impact. | |
| Regulation in Japan | No action for prevention, mitigation, control, or eradication. | |
| Introduced range in other countries | St. Helena, etc. | |
| Reference | Notes |
|