A new species of scleractinian coral, Porites randalli spec. nov. (Scleractinia, Poritidae), previously known as Porites sp. 2, is described from American Samoa. P. randalli typically forms small pale green colonies that are usually <5 cm in diameter, with a surface reticulated with small (0.5 cm-2 cm) nubbins or protuberances. Colonies have been observed between 1-12 m depths in a variety of reef habitats and are among the most common corals in American Samoa. Corallites are approximately 1 mm in diameter and are sunken with a visible ring of pali. The columella is either lacking or small, with 1,2 or no radii, six pali (five large and a small one on the dorsal septum). Corallite walls rise gradually with concentric rows of denticles. Porites randalli spec. nov. is an example of cryptic diversity; it is a small coral that at first glance can be overlooked or mistaken for a young colony of other species. ?? 2009 Magnolia Press.
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Porites randalli: A new coral species (Scleractinia, Poritidae) from American Samoa