| Land | Observationsplats | Införda | År | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| United States (contiguous states) | Salt marsh pools, New Jersey, USA | 1990 - 1990 | common | 58356 | |
| United States (contiguous states) | Salt marsh pools, New Jersey, USA | 1991 - 1991 | common | 58356 | |
| United States (contiguous states) | Salt marsh pools, New Jersey, USA | 1993 - 1993 | abundant | 58356 | |
| United States (contiguous states) | Salt marsh pools, New Jersey, USA | 1995 - 1995 | common | 58356 | |
| United States (contiguous states) | Salt marsh pools, New Jersey, USA | 1996 - 1996 | abundant | 58356 |