Trilacuna spp., female genitalia, ventral views. A, B Trilacuna bawan sp. n. C, D Trilacuna datang sp. n. E, F Trilacuna fugong sp. n. G, H Trilacuna gongshan sp. n. I, J Trilacuna longling sp. n. Abbreviations: ap = apodeme; as = anterior sclerite; glo = globular structure; hsc = horseshoe-shaped sclerite; psp = posterior spiracle; sar = sclerotized, recurved arches; ssc = stick-like sclerite; tba = transverse bars; tsc = transverse sclerite. Scale bars: 0.1 mm.