Hairy Crab

Pilumnus fissifrons

Systematics: Brachyura Family Pilumnidae

Distinguishing Characters:
The carapace is up to 20 mm wide, with triangular teeth along the sides of the broadly curved front. The chelipeds have black tips; one is much larger in males. Much of the carapace and the legs are covered with dirty grey hairs giving the crab a velvety feel.

Habitat and Distribution:
The hairy crab is a cryptic species living under rocks, among algae or sponges near low tide level and in much deeper water. The species occurs in South Australia, Victoria and Tasmania.

General Biology:
Whereas many crabs will attempt to escape when disturbed or captured, hairy crabs play dead, curling their legs up to look as inconspicuous as possible. Their camouflage makes them difficult to see even when rocks are turned. There are several species of hairy crabs in southern Australia, all very difficult to distinguish.