| Reference no. | Clemens, W.A. and G.V. Wilby, 1961 |
| Ecosystem | Juan de Fuca Strait |
| Status | native |
| Abundance | scarce (very unlikely) |
| Lifestage | adults |
| Regional database | |
| Remarks | From CA-BC. Recorded from Discovery Island, Porlier Pass, mouth of the Fraser River, the Skeena River, and Skidegate Lake (Ref. 6885); also recorded from rivers in Vancouver Island and the Stikine River (Ref. 10882). There are uncertain records from rive |