About Petrolisthes manimaculis Glassell, 1945
Petrolisthes manimaculis has a red or chocolate-colored carapace, tan legs, gray antennae, and long chelipeds — claw-bearing arms — that extend 2 to 3 times the width of the carapace. Its species name manimaculis comes from the Latin phrase meaning "spotted hands", referring to the pattern of turquoise-blue spots on this species' claws that sets it apart from other species that share the same geographic range. A second distinguishing feature separates it from P. eriomerus: P. eriomerus has blue coloration at the base of its dactyls (the movable appendages of the claw), while P. manimaculis has a distinct orange coloration at the base of its dactyls.
