Selatium

Selatium is a genus of crabs in the family Sesarmidae.

== Description == Selatium, or mangrove crabs, grow to around 2 cm - 2.5 cm in size, and have a distinct patterning on their dorsal side. Their legs and carapace display a striped pattern. The carapace itself is flat and square-shaped. It is wider than it is long and has deep grooves along the surface that separate each region. A large, sharp tooth is present on the carapace near the eyes. Selatium morphology also consists of chelipeds, or the front pair of extremities that attach to large claws or fingers. The tips of their chelipeds are cupped to facilitate feeding on algae and have sharp edges used for cutting. This species does not exhibit sexual size dimorphism, however, on the dorsal side of their claw, males have a row of small, narrow teeth, while females have tubercles. Mangrove crabs also have four other pairs of legs used for movement. Their legs have long propodi (second most distal segment) and short dactyli (most distal segment). On the underside of the carapace lies the abdomen which is triangular in shape with a rounded telson.