This crustacean is known from the Strait of Georgia, Canada, to California, USA.
In adults, the distal margins of the uropods have large, sharp spine-like projections.
It is known from red algae and encrusting organisms on rocks.
In adults, the tail plate is narrow and much longer than wide.
In adults, the eyes project outward from the sides of the head.
An extinction-risk assessment has not been added yet.