This crustacean is known from northern California, USA, to Mexico.
Adults have seven pairs of legs.
It is known from the lower rocky intertidal zone, eelgrass beds, algal mats, muddy seafloors and pier pilings.
In adults, the first five abdominal segments are free and separate.
In adults, the mouthparts form a forward-pointing cone below the head.
An extinction-risk assessment has not been added yet.