| Reference no. | Higgins, R.P., 1986 |
| Ecosystem | Oregon, Washington, Vancouver Coast and Shelf |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Known from intertidal, diatom-covered rock and gravel sediments of San Juan Island (Ref. 335). Also in Ref. 318. |