Figures 1–6; (1–3) Iguazus robustus sp. nov., left gonopod: (1) mesal view (arrow = insertion point, zone of acropodite); (2) ventral view; (3) ectal view (arrow = groove near the first portion of the acropodite). (4–6) Tessarithys exacuminatus sp. nov., left gonopod: (4) mesal view; (5) ventral view; (6) ectal view (arrow = groove near the first portion of the acropodite). Scale bars = 0.5 mm. (a) Process A, (A) acropodite, (b) process B, (c) process C, (PfP) prefemoral process, (SP) spiniform projection on gonopod coxae, (X) subterminal dorsal branch.
Figures 7–12; Iguazus robustus sp. nov.: (7) Sternite, body ring 3 (arrow = genital papilla), body ring 4; (8) Sternite of body ring 5; (9) Sternite on body ring 8 (arrow = pairs of projections); (10) Leg, lateral view; (11) Leg, ventral view; (12) Penultimate body ring (arrow = reduced paranota).
Figures 13–18; Tessarithys exacuminatus sp. nov.: (13) Sternite, body ring 3 (arrow = genital papilla), body ring 4; (14) Sternite of body ring 5; (15) Sternite on body ring 8 (arrow = pairs of projections); (16) Leg, lateral view; (17) Tibia, membranous projection apico-ventral, detail; (18) Paranota, ventral.
Figures 19–27; (19–21) Iguazus robustus sp. nov., body: (19) first body rings; (20) midbody body rings; (21) last body rings. (22-27) Tessarithys exacuminatus sp. nov., body (holotype): (22) fírst body rings; (23) midbody body rings; (24) last body rings; body (paratype); (25) first body rings; (26) midbody body rings; (27) last body rings.