| Reference no. | Coad, B.W., 1995 |
| Ecosystem | Salish Sea |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | From CA-BC. Occurs along the Pacific coast and drainage (Ref. 11980) as far inland as the Skeena River headwaters. Does not reach the higher reaches of major rivers like the Columbia River. Freshwater records from Vancouver and Queen Charlotte Islands, t |