Leucosia anatum, also known as the pebble crab, is a species of crab in the family Leucosiidae.
Description This species has a strongly convex, elongate carapace. Its outline is somewhat rhomboidal. The front edge of the carapace is slender and obtusely triangular, with a pointed postorbital that points upward at an oblique angle. It has stout ambulatory legs, with each section being cylindrical and fairly smooth.
Distribution This species is known to occur in the following locations: Madagascar Mauritius Persian Gulf Pakistan Sri Lanka Andaman Islands Mergui Archipelago Japan: multiple locations Korea Taiwan China in the sea around Guangdong Gulf of Tonkin Philippines: south of Manila Bay Indonesia: Ambon (type locality) Australia: multiple location New Caledonia: Ilot Maitre Fiji
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