PORCELLANA LILLYAE, NEW SPECIES (DECAPODA, ANOMURA, PORCELLANIDAE), FROM THE CARIBBEAN SEA, WITH A KEY TO THE WESTERN ATLANTIC SPECIES OF THE GENUS

Abstract

A new species of porcelain crab, Porcellana lillyae, from the continental shelf of the Caribbean coast of Colombia, is described. This new species, the fourth of the genus Porcellana Lamarck currently recognized from the western Atlantic, is most similar to P. sigsbeiana A. Milne-Edwards. The new species is distinguished primarily by the dentate condition of the frontal and lateral margins of the carapace and the presence of spines on the ventral margin of the rostrum. The new species is compared with P. sigsbeiana, and a key to aid in identification of western Atlantic species of the genus is presented.