Amphipods of the Family Ampeliscidae (Gammaridea). I. Ampelisca bicarinata, a New Species of Amphipod from the Gulf of Mexico

Abstract

A new species of the benthic amphipod genus Ampelisca Kroyer, is described and illustrated. Previous records of the Pacific species Ampelisca cristoides Barnard, 1954, from the western North Atlantic are now assignable to the proposed new species, Ampelisca bicarinata. These two closely related sibling species are compared and their specific differences enumerated.