The Ampelisca aequicornis group of species (Amphipoda: Ampeliscidae) with a key, and a description of Ampelisca eclimensis sp. nov. from Ireland

Abstract

The Ampelisca aequicornis group of species in the north-east Atlantic is discussed and A. aequicornis is redescribed from material identified in the collection of G.O. Sars. From Irish material a new species, Ampelisca eclimensis sp. nov., is described and an extended description of Ampelisca sorbei given. A key is presented to the A. aequicornis group of species.