| Reference no. | McPhail, J.D. and R. Carveth, 1993 |
| Ecosystem | Strait of Georgia |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | From CA-BC. Freshwater records from Vancouver and the Queen Charlotte Islands, the Fraser, Thompson, Lewes, Teslin, Stikine, Taku and Alsek Rivers, and rivers of the central coast. Also found below the barriers of the Okanagan River. Also Ref. 95146. |