| Referensnr. | McPhail, J.D., 1993 |
| Ekosystem | Salish Sea |
| Status | native |
| Abundans | abundant (always seen in some numbers) |
| Livsstadium | adults |
| Regional databas | |
| Anmärkningar | From CA-BC. Occurs along the coast (Ref. 4925). Freshwater records from Vancouver and the Queen Charlotte Islands, the lower Fraser, the Stikine, Taku and Alsek Rivers, and rivers of the central coast (Ref. 10882). Locally abundant around the Strait of |