Appearance
A small crab, ''H. nudus'' reaches sizes of approximately 4.0–5.6 centimetres . Its dorsal shell is generally a dark purple in color, although it may be olive green or red, with white or cream markings. The color of the legs matches the color of the carapace but the white-tipped claws are a lighter color with purple or red spots – these spots allow ''H. nudus'' to be distinguished from a similar looking crab, the lined shore crab, ''Pachygrapsus crassipes'', whose chelipeds lack spots. The legs of ''H. nudus'' lack setae, a distinguishing feature of the otherwise similar ''H. oregonensis''.References:
Some text fragments are auto parsed from Wikipedia.
