This crustacean is known from Canada, the western USA, Japan, Taiwan and Hong Kong.
In adults, a spatula-shaped process at the front of the head separates the two antennules.
It lives in the intertidal zone of sandy beaches.
In adults, the third basal segment of the antennules is longer than the second.
In adults, the tail plate ends in a pointed tip.
An extinction-risk assessment has not been added yet.