| Reference no. | Coe, W.R., 1901 |
| Ecosystem | North American Pacific Fijordland |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Known from Metlakatla, Glacier Bay, Sitka, and Orca under stones in muddy places where mud is black, slimy and foul. |