Trilacuna simianshansp. n., female. A, B, C habitus, dorsal, ventral and lateral views D, E, F, G prosoma, dorsal, ventral, lateral and anterior views H, I genitalia, ventral and dorsal views. Abbreviations: apo = apodemes; css = cone-shaped structure; ehb = elevated hair base; fo = fold; ldi = labium deep incision; pe = posterior extension; psc = paddle-like sclerite; psp = posterior spiracles; sls = slender line-like structure. Scale bars: 0.2 mm (A–C); 0.1 mm (D–I).