Blue-eyed hermit crab

The anterior part of this crab is calcified while the posterior part, protected by the shell it inhabits, is not. The total length is up to 30 mm (1.2 in) with a shield length of up to 8 mm (0.3 in), with males usually being larger than females. The eyestalks are long and slender, and inflated at the base. The left cheliped (claw) is much larger than the right one. The propodus (penultimate joint) is smooth and shiny, the finger and thumb having spoon-shaped, calcified tips. The general colour of the carapace is brown to grey. The eye stalks are blue at the base and orange distally. The first pair of antennae have blue bases and orange tips and the second pair are entirely orange. The chelipeds are purplish-brown, the fingertips being white. The walking legs are orangish-brown with white tips.