Bioacoustics of Acropsis solimoesensis

Diagnosis . Tegmina with an pentagonal cell present between veins MP and CuA ( Fig. 8 ). Cercus apex rounded, with a hook-like spine ( Fig. 7K ). Lateral lobes of mesosternum triangular, narrowed, parallel, with rhomboid apex Description. Male. Head. Rugose. Fastigium dorsally short, gently bilobed. Vertex trapezoidal, frontally bilobed. Thorax. Dorsal pronotal disc rugose with slight linear depression ( Figs. 7 C–D). Dorsolateral and furcal sutures deeply marked ( Fig. 7C ). Furcal sutures connected. Meso- and metasternum laterally compressed ( Fig. 7C ). Mesosternum anteriorly rhomboid. Lateral lobes of mesosternum with apex rhomboid ( Fig. 7E ). Metasternum diamondshaped ( Fig. 7E ). Lateral lobes of metasternum curved with rounded apex ( Fig. 7E ). Wings. A pentagonal cell present between veins MP and CuA ( Fig. 8 ). Vein CuA with five bifid branches with bifurcations at apex ( Fig. 8 ). Left stridulatory with basal teeth short, gradually increasing in length towards median region ( Fig. 9A ). Median teeth slender, close to each other. Left stridulatory file with 78 teeth, length of 3.2 mm and greatest width of the vein of 0.4 mm ( Fig. 9A ). Left stridulatory sinuous, with convex base, median region nearly straight, distally concave ( Fig. 9B ). Basal and distal teeth short, widened. Median teeth slender, close to each other ( Fig. 9A ). Right stridulatory file with 67 teeth, length of 2.3 mm and greatest width of the vein of 0.1 mm ( Fig. 9B ). Legs. Mid tibia slightly widened basally, with three ventral spines ( Fig. 7G ). Hind femur with six ventral spines, wider basally ( Fig. 7H ). Abdomen. Cercus inward curved; apex rounded with small hook-shaped spine ( Fig. 7H ). Subgenital plate trapezoidal, with length not reaching half of cerci length ( Fig. 7I ). Apex of subgenital plate inconspicuously emarginated ( Figs. 7 I–J). Stylus rectangular and short ( Figs. 7 I–J). Cercus and subgenital plate covered with numerous bristles ( Figs. 7 I–K). Internal male genitalia . Not examined. Coloration . Based on photos of preserved specimen ( Fig. 7 ). Generally yellowish-brown, with some light green tegmina parts. Compound eyes brown. Sternites, cercus, subgenital plate and stylus yellow. Female. Unknown.