Carapace subequal in length and width, with convex areas; covered with small spines and nodules, and margined with larger, slender spines. There is also a large spine on the crest of the gastric area and on each branchial area. Eyestalk stout with small spines dorsally and oval cornea ventrally. Acicle of antenna with long slender spines. Chelipeds of juveniles subequal in length to walking legs and, in adults, shorter than walking legs. Right hand stout with swollen palm and armed with long slender spines. Walking legs slender and covered with many sharp spines in rows on ridges with flat area between, especially obvious on the carpi and propodi; dactyl short with sharp, curved claw.
SizeCarapace: male 80 x 78 mm.
ColourCarapace scarlet with spines dark and nodules light. Chelipeds and walking legs scarlet with lighter-coloured spines and tips of fingers. Eyestalk scarlet; cornea black. Antennal flagellum scarlet.