Figure 3. Stenothoe crenulata Chevreux, 1908 in Minute but constant morphological differences within members of Stenothoidae: the Stenothoe gallensis group with four new members, keys to Stenothoe worldwide, a new species of Parametopa and Sudanea n. gen. (Crustacea: Amphipoda)

Figure 3. Stenothoe crenulata Chevreux, 1908: male, Barbados, Caribbean Sea: Md = left and right mandible; Gn 1, 2 = first and second gnathopod with the same enlargement; Gn 1ʹ, Gn 2ʹ = both gnathopods partly enlarged; P 3 = third peraeopod; Us = urosome with uropods and telson; U 3 = third uropod; T = telson.