Marengo ganae sp. nov., male holotype and female paratype A epigyne, ventral B, C vulva, dorsal D holotype habitus, dorsal E ditto, lateral F female paratype habitus, dorsal G holotype carapace, frontal H holotype leg I, prolateral. Scale bars: 0.1 mm (A–C); 0.2 mm (G, H); 0.5 mm (D–F). Abbreviations: AR – atrial ridge; CD – copulatory duct; CO – copulatory opening; FD – fertilization duct; MS – median septum; S – spermatheca; St – stiffener.