Stenothoidae
General description:
A1 almost half body length. Accessory flagellum absent. Gn2 elongate, slender with curved distal tooth. Coxa 4 large and shield-like. Uropod 3 is robust with about five marginal spines. Telson has 3-4 pairs of dorsolateral spines.
Phylogeny:
Subphylum: Crustacea
Order: Amphipoda
Suborder: Gammaridea
Stenothoidae Boeck, 1871