This crustacean is known from California, USA, and Mexico.
In adult females, the first five abdominal segments are fused along the middle.
It parasitizes the gills of Hippolyte californiensis in San Diego Bay and Thor algicola in the Gulf of California.
In adult females, the head is roughly triangular and separated from the thorax by a deep groove.
Adult females lack eyes.
An extinction-risk assessment has not been added yet.