A review of the hexacreusia species complex: eastern pacific coral barnacles (cirripedia, balanomorpha)

Abstract

Hexacreusia Zullo, 1961, previously assigned to the Pyrgomatidae is herein formally reassigned to the Archaeobalanidae. Re-examination of certain specimens of Hexacreusia from San Esteban Island within the Gulf of California, Mexico has revealed that in addition to H. durhami Zullo, 1961 there is a second species present, for which we propose H. puritanae sp.nov. The Galapagan species, H. straeleni Zullo & Beach, 1973, differs in general form, manner of growth and type of host from the mainland forms of Hexacreusia and is assigned to a new genus, Zulloana.