Figure 15. Hesperodiaptomus caducus Light. Male. (a) 5th legs, anterior view, St. Anselm's pond, B.C.; (b) detail left 5th leg, anterior view (redrawn after Wilson 1959); (c) 5th legs, posterior view (redrawn after Wilson 1959); (d) left 1st antenna, segments 2-11 (redrawn after Wilson 1959).