Seanet High Intertidal

High Intertidal Mid Intertidal Low Intertidal    Rocky Shore Taxonomic Subtidal Taxonomic    Rocky Shore by Pictures Subtidal by Pictures

Petrolisthes cinctipes (Randall, 1840)
Phylum Arthropoda, Subph. Crustacea, Class Malacostraca, Subcl. Eumalacostraca, Superorder Eucarida, Order Decapoda, Infraorder Anomura, Family Porcellanidae

Porcelain crab; 3 pr. walking legs with 1 pr. broad flat claws; carapace square, antennae dk. red; carapace to 24 mm, lacks hairs; color light brown to dk. brown; mouth parts bright red; red-orange spot at base of dactyl on claws; readily autotomizes appendages when disturbed.

Abundant under rocks, high to mid-intertidal zones; protected outer coast. Suspension feeder.

Geo Range: British Columbia to Santa Barbara, Calif.
Similar species: Petrolisthes eriomerus & P. manimaculus have more slender claws & occur lower on the shore