This crustacean is known from California, USA, to Mexico.
In adults, the head has angular front side margins and a short pointed central lobe or slightly rounded central point.
It occurs under rocks in the low intertidal zone.
In adults, thoracic segments one to three have distinct lateral lobes separated by narrow V-shaped slits.
In adults, a conspicuous fringe of setae lines all lateral margins.
An extinction-risk assessment has not been added yet.