Carapace slightly wider than long, surface finely pubescent with numerous spines and granules; lateral margins armed with large spines and posterior with granules. There are two rows of spines on each branchial area which meet to form a V at an angle of about 45°; the junction is marked with a stout spine on the lateral margin. Branchial area dilated but interbranchial space little depressed. Walking legs compressed with rows of sharp spines; meri slightly dilated proximally.
SizeCarapace: male 135 x 152 mm.
ColourAdults scarlet; juveniles white.