Otacilia dadongshanica sp. nov., female paratype (Phu-13-2). A, Habitus, dorsal view; B, Same, ventral view; C, Epigyne, ventral view, black arrows showing the slerotized depressed area; D, Vulva, dorsal view. Scale bars: A and B, 0.5 mm; C and D, 0.1 mm. Abbreviations: CO, copulatory opening; CT, connecting tube; FD , fertilization ducts; GA, glandular appendage; MP, median plate; MS, membranous sac; PP, posterior plate; SP, spermathecae.