Trilacuna aoxian sp. nov. A male left palp, prolateral view B male left palp, retrolateral view C male endites and labium, ventral view, white arrow shows the short, thick setae, black arrow shows two very long, thick setae D, E endogyne in ventral and dorsal views. Abbreviations: ap = apodemes; as = anterior sclerite; glo = tube-like globular structure; ldi = labium deep incision; tba = transverse bars; tp = triangular plate; tsc = transverse sclerite. Scale bars: 0.1 mm (A–E).