Length to 20 mm (females, Phronimella elongata 1), to 12 mm (males, Phronimella elongata 2). With characters of genus Phronimella.
Kingdom Animalia Phylum Crustacea Class Malacostraca Subclass Eumalacostraca Superorder Peracarida Order Amphipoda Suborder Hyperiidea Infraorder Physocephalata Superfamily Phronimoidea Family Phronimidae Genus Phronimella Species Phronimella elongata
