Bioacoustics of Xenodoxus nobilis

Remarks . These are the first records after the description of Xenodoxus nobilis from Madagascar . Below peculiar characters of the species are reported. Characters . Tegmina bicolored, anteriorly cream, posteriorly brown, hind wings dark, hind legs with black and white stripes ( Figs 1 A, 1B, 1H). Fastigium of vertex very narrow, eyes round, prominent, fronto-genal keels absent ( Fig. 1 G). Antennae very long, exceeding ca. 3 cm extended hind legs. Stridulatory file with big teeth in the distal part and smaller and evenly spaced teeth in proximal part ( Fig. 1 C); in the right tegmina only 11–12 teeth behind the speculum. Fore coxae armed, fore femora unarmed, fore tibiae with open tympana on both sides, superiorly furrowed, with 4 inner and outer ventral spines + 1 spur on each side, 2 inner dorsal + 1 spur; mid femora unarmed, mid tibiae with 6 inner and 9 outer ventral spines + 1 spur on each side, 1 inner dorsal + 1 spur. Genicular lobes with a pair of small spines. Last tergite ending with two lateral hook-like up-curved and pointed appendixes, apically crossing ( Figs 1 A, 1D). Cerci in-curved, stout at their base, then more slender, up-curved and pointed. Male subgenital plate narrow and long, with a deep concavity, its apices divergent and pointed ( Fig. 1 D). Ovipositor long and laterally flat, superiorly and inferiorly denticulate in the apical part ( Fig. 1 B). Female subgenital plate rhomboidal ( Fig. 1 F).