This crustacean is known from southern California, USA, to Costa Rica.
In adults, the mouthparts form a forward-directed cone under the head.
At the type locality in Puerto Peñasco, Mexico, it was collected on Sargassum seaweed.
In adults, the thorax has six distinct segments and six pairs of legs; the seventh segment is very short and lacks legs.
In adults, abdominal segments one to five are separate, divided by dorsal folds of the body covering.
An extinction-risk assessment has not been added yet.