Bioacoustics of Endecous (Pedroecous) didymus

Description, male holotype . Body color: dorsal head, pronotum and right tegmen yellowish-orange brownish ( Figs 8–12 ), whitish ventrally, abdomen yellowish brown ( Figs 12–13 ), entire legs brownish, except femora base whitish ( Figs 16–19 ), cerci uniformly brownish. Head : slightly pubescent, elongated in frontal view ( 3.9 mm length and 2.9 mm width), vertex slightly marked with four stripes reaching occiput, with the central stripe having a slight double branching; gena, clypeus, frons and labrum whitish, mandibles brown whitish, dark brown and sclerotized at border and apex; the first two maxillary palpomeres whitish, with the same size, both together are smaller than the third, which in turn is the same size as the fourth; fifth palpomere slightly longer than fourth, claviform, slightly arched, and darker at the tip; first, second and third labial palpomeres of increasing size, the third is pubscent, claviform and slightly darker at the tip; scape, pedicel and antennomeres uniformly brownish and pubescent, the region between the antennae has well developed bristles; compound eyes with black ommatidia, with a depigmented field where scape fits; ocelli absent ( Figs 8–9 and 87 ). Thorax . Pronotum slightly pubescent, dorsal disc wider than longer, marked with a longitudinal median stripe, and long bristles on anterior and posterior margin; lateral lobes rounded, without bristles ( Figs 10, 12 ). Leg I: femur and tibia same size; tibia with an oval auditory tympanum at inner side, and one pair of subigual ventroapical spurs; first tarsomere serrulated, larger than the second and third tarsomeres ( Figs 18–19 ). Leg II: tibia armed with a pair of inner and outer apical spurs, dorsal smaller ( Figs 18, 19 , λ, μ). Leg III: femur dilated, whitish at the base; tibia serrulated, as longer as femur, and armed with three inner ( Fig. 17 , α, β and γ) and four outer subapical spurs ( Fig. 16 , w, x, y and z) the distal is smaller ( Fig. 16 , z), and four api- cal spurs at inner ( Fig. 17 , d, e, f and g) and three at outer side ( Fig. 16 a, b, c ); first tarsomere is serruleted distally and larger than the third and second in size, respectively, with one pair of apical spurs, the inner longer ( Figs 16–17 , δ, θ). Right tegmen covering the first four abdominal tergites ( Fig. 12 ); mirror : rounded with three crossvein and four cells, the second distal cell present one crossvein bifurcate, forming two small cell couple, first distal cell with one slightly marked diagonal vein; harp : with five well marked crossveins, and six cells, the first distal cell has a diagonal anal vein; lateral field : marked by reticular accessory veins, some are forked; basal field : with veins 1A, 2A and 3A well-marked, with four secondary veins connected to CU 2 , the first is forked; 2A and 3A vein bifurcated ( Figs 11 , 20 ); stridulatory file with 68 teeth. Abdomen : cerci long ( 14.9 mm ± 1.7 mm ) and pubescent, mainly in the base; supranal plate short, rounded at apex, with lateral projections small, brown with white spots ( Figs 13, 15 ); subgenital plate short, whitish and rounded, base lightly squared ( Figs 13–14 ).