Bioacoustics of Ectadia sinuata

Description. – Male. Size, shape of body, color, comparison between tegmen and hind wing and shape of tegmen similar to Ectadia obsolescenta , but different from the latter as follows. Stridulatory file slightly sinuate; circa basal 1/2 area with densely spaced fine teeth, following 1/6 area with 4 densely spaced large teeth, apical 2/6 area with large densely spaced teeth, which are gradually decreasing in size towards apex (Figs. 5, 10, 13). The whole area of the stridulatory apparatus of right tegmen moderate, its scraper cambered, the relatively wider area situated more distally than the main structure of the stridulatory apparatus, proximal area between MA and MP+CuIA, with many veinlets (Fig. 16). Abdominal 10 th tergite slightly prolonged backwards, lateral margins convex, hind margin slightly emarginate, with a longitudinal furrow on dorsal surface. Supra-anal plate nearly semicircular, lateral margin slightly convex, hind margin with a round emargination. Cerci rather stout in the basal 1/3 area, then sharply acuminate, yataghan-shaped; Subgenital plate split for almost apical 1/2, upcurved (Figs. 19, 22). Female unknown. Measurements of male (length in mm). – body 17.0; pronotum3.6; tegmen: 26.5; width of tegmen 6.5; hind wing 35.0; hind femur 20.0.