Bioacoustics of Paraporeuomena signata

Description. Male. Head and antennae. Fastigium of vertex not contiguous with fastigium of frons, narrow and pointed, much narrower than first antennal segment. Eyes elliptical, prominent, face smooth with lateral grooves below the eyes. Maxillary palps as long as the head length ( Figs. 6, 11 ). Thorax. Pronotum as long as high, without lateral carinae, surface shiny with a well-developed humeral excision on the lateral lobes ( Fig. 6 ). Anterior margin of pronotum straight, posterior margin rounded, pronotum lobes widely rounded. Legs. Long, fore coxae armed with a fine spine, conchate tympana on inner and open on outer fore tibiae, that are sulcate dorsally; mid femora also dorsally sulcate. Lower inner margin of fore femora armed with 4 spines, lower outer margin of mid femora armed with 3 (left) and 5 (right) spines, lower outer and inner margins of hind femora armed with 6–7 spines, genicular lobes of fore, mid and hind femora armed with 2 spines on inner and outer margins ( Fig. 14 ). Fore tibiae ventrally armed with 4 spines + 1 apical spur on outer and inner margins, dorsally covered by many small spinules, mid tibiae armed with 4 ventral spines + 1 spur on outer and inner margins and with 1 dorsal spine on inner margin, hind tibiae with many spines on ventral and dorsal margins + 3 apical spurs on each side. Tegmina with a net of veinlets, without any particular shape; anterior margin of tegmina convex ( Fig. 1 ). Stridulatory area well marked, mirror absent in the right tegmina ( Figs. 7–8 ), stridulatory file short, ca. 0.6 mm long, consisting of less than 50 evenly distributed teeth ( Fig. 13 ). Abdomen. Cerci stout at the base, pointed apically, with a robust inner spine at the mid, undulate with an upward tip in lateral view ( Figs. 9, 10, 12 ). Supragenital plate rounded, subgenital plate trapezoidal with a straight posterior margin, styli absent ( Fig. 9 ). Measurements (mm). Male. Total length: 17.5; length of pronotum: 3.5; height of pronotum: 3.5; length of fore femora: 7.8; length of mid femora: 9.2; length of hind femora: 18.9; length of tegmina: 28.5; width of tegmina: 6.0.