Length 3.5-4 mm (females), 2.5-3.5 mm (males) (Archaeoscina steenstrupi 1). ART 3 of mandibular palp curved, 1.5 times as longer as ART 1 and 2 combined. ART 5 of P I and II broad but not expanded distally, ART 6 more oval than conical. Rami of UR narrow, lanceolate, with serrate margins. Telson reaching middle of basipodite of UR III.
Kingdom Animalia Phylum Crustacea Class Malacostraca Subclass Eumalacostraca Superorder Peracarida Order Amphipoda Suborder Hyperiidea Infraorder Physosomata Superfamily Archaeoscinoidea Family Archaeoscinidae Genus Archaeoscina Species Archaeoscina steenstrupi