A new coral species, Acropora rongelapensis, from the northern central Pacific Ocean is described. On present records, this species appears to be endemic to the Republic of the Marshall Islands. Distinguishing features of the species include sub-t1attened branches with widely separated radial corallites born laterally. Diagnostic characters of the new species place it within the Acropora loripes group.
Keywords: Cnidaria, Anthozoa, Scleractinia, Astrocoeniina, Acroporidae, Marshal Islands, central Pacific, marine systematics, AAC