Arnoliseus hastatus sp. nov. A. Male holotype left chelicera, ventral view exposing the apophysis (MNRJ 60027). B–F. SEM images: B. Left male palp, ventral view (UFRJ 1585); C. Left male palp, retrolateral view (UFRJ 1585); D. left male palp, embolus detail (UFRJ 1585); E. Left male palp, RTA detail (UFRJ 1585); F. Female internal genitalia, dorsal view (UFRJ 1586). Scale bars: 0.5 mm (A); 0.1 mm (B, C, F); 0.02 mm (D); 0.05 mm (E). White arrow points to the embolus pore. Black arrow points to RTA hook.