The flatspine triangle crab, Phyllolithodes papillosus, ranges from Dutch Harbor, Alaska, to San Miguel Island, California. They are found on rock surfaces subtidally to 183 m and prefer shallow areas with strong currents. Apparently, they have been seen feeding on small sea urchins and sponge.
Juveniles are often white with purple or orange markings.
Digital photo by Jan Haaga. For a complete list of References, Click here.