This crustacean is known from British Columbia, Canada, and the Gulf of California, Mexico.
In adult females, the head is wider in front than behind and lacks horn-like front side projections.
It parasitizes the gills of the squat lobsters Galacantha diomedeae and Munida quadrispina.
In adult females, the inner branches of abdominal appendages one to five are slightly larger than the outer branches, triangular or oval, and smooth.
In adult females, the side plates of thoracic segments five to seven are developed as thin lamellae.
An extinction-risk assessment has not been added yet.