| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Taylor Creek, El Dorado County, California, USA | 2206 | 1972 or earlier | freshwater | apparently introduced here. | Kenk R (1972): 40 | |||
| B | Eastern North America | 2207 | 1972 or earlier | freshwater | springs and cold creeks. | Kenk R (1972): 40 |