Fig. 1.

Prophalangopsidae and Haglidae from the Jurassic Daohugou Konservat-Lagerstätte. (A) Sigmaboilus sinensis, NND04329, male, with stridulatory files and tympanal ears. (B) Tympanal ears on forelegs (enlargement of boxed area in a). Note the right external (posterior) and left internal (inner) tympana are of similar size. (C) Sigmaboilus sinensis, NND04334, female, tympanal ears (SI Appendix, Fig. S1A). (D) Sigmaboilus sp., NND12z088, female, tympanal ear (SI Appendix, Fig. S1B). (E) Liassophyllum caii, NND12z186, male, stridulatory file (SI Appendix, Fig. S2C). (F) Allaboilus gigantus, NND12z171, male, stridulatory file, and harp (SI Appendix, Fig. S2D). ey, eye; ha, harp; hl, hind leg; sf, stridulatory file; te, tympanal ear. (Scale bars, 10 mm (A), 1 mm (B–F).)