This crustacean is known from northern and southern California, USA.
In adults, the slender terminal portion of the antenna has four segments.
It occurs beneath stones, driftwood, decaying eelgrass and other debris along the high-tide line of marshes, bays and estuaries, and in the spray zone of rocky beaches.
In adults, the middle of the head front has a strong projection with a truncate tip.
Adults have a markedly convex body.
An extinction-risk assessment has not been added yet.