Bioacoustics of Tyrannoraptor venator

Description. Holotype Male. Head. Head dorsally with small and elongated fastigium-vertex, in frontal and dorsal view ( Figs. 2B–C ); eyes large and globular ( Figs. 2B–D ). Frons, clypeus and gena smooth ( Fig. 2B–D ). Mandibles asymmetrical, with left mandible elongated, curved and projected frontwards, highlighted among the other mouthparts ( Figs. 2A–D ). Thorax . Pronotal disc anteriorly quadrangular, without carina, posteriorly elongated, slightly projected upwards and concave, in dorsal view ( Fig. 2C ); dorsolateral suture slender and straight, in lateral view ( Fig. 2D ). Furcal suture transversally straight, forming a small depression on its extension, in dorsal and lateral view ( Figs. 2C–D ). Dorsolateral suture and furcal suture concolorous with pronotal disc ( Figs. 2C–D ). Mesobasisternum with shape trapezoidal, anteriorly concave and narrow, medially with two subtriangular projections with apex round ( Fig. 2F ). Metabasisternum hexagonal ( Fig. 2F ). Wings . Tegmina narrow with apex round, with anterior margin concave and posterior margin straight ( Fig. 3A–B ). Left stridulatory file sinuous ( Fig. 4A ); basal and apical teeth shorter than middle teeth; teeth on apical extremity short and straightly aligned ( Fig. 4A ). Total length of left stridulatory file 2.3 mm, greatest width of the vein of 0.2 mm, with 74 teeth ( Fig. 4A ). Right stridulatory file sinuous; basal and apical teeth shorter than middle teeth ( Fig. 4B ). Total length file of 2 mm , greatest width of the vein 0.2 mm, with 46 teeth ( Figs. 4B ). Legs . Fore femur straight, with apex slightly curved, narrower than the base; ventral region with four large spines inward and three spines outward ( Fig. 2G ). Fore tibia straight; ventral region with six large spines inward and four spines outward; tympanum open and tympanic region enlarged ( Fig. 2G ). Mid femur slightly curved, thickened at base and narrowing towards apex; ventral spines absent ( Fig. 2H ). Mid tibia straight, basal half thickened with four pairs of large ventral spines ( Fig. 2H ). Hind femur thickened at basal half ( Fig. 2E ). Hind tibia straight, narrow, with several short ventral spines and several dorsal spines bigger than ventral spines ( Fig. 2A ). All legs with short bristles ( Figs. 2A, G–H ). Abdomen . Cerci slender, cylindrical, with basal half curved and apical half sinuous, in dorsal and ventral view ( Figs. 2I–J ); presence of pair of spurs curved inward on apical third; cerci apex round, with inner margin with few short spices curved (>10), spines slightly longer intercalated by shorter spines, in dorsal and ventral view ( Figs. 2I–J ). Tergite X with posterior margin expanded, forming a bifurcated projection with both apices round, in dorsal and ventral view ( Figs. 2I–J ). Subgenital plate rectangular and straight apically ( Fig. 2J ). Stylus straight, elongated, parallel and with apex round ( Figs. 2I–J ). Internal male genitalia. Not examined. Coloration. Described based on photos of live specimens ( Fig. 5 ). General coloration light green with patches of dark green. Scape and pedicel light green. Antennal sclerite with base light brown and apex dark brown. Eyes yellow with longitudinal red stripe medially and a short area light green dorsally. Asymmetrical mandible dark brown with apex black. Pronotal disc light green with posterior projection slightly light brown. Legs light green. Tarsi light brown with tarsal claws dark brown. Tegmina light green, with dorsal region with a dark brown stripe. Abdomen, cerci and subgenital plate light green. Female: Similar to male ( Fig. 6A, C–H ), except for the following traits: Head . Symmetrical mandibles ( Fig. 6B ). Wings. Anal veins not modified for sound production. Abdomen . Tergite X posteriorly convex, in dorsal view ( Fig. 6I ). Cercus curved inward and with apex acuminated. Cercus with long white bristles ( Fig. 6I ). Subgenital plate subtrapeziodal, with apex bilobated ( Fig. 6J ). Ovipositor ensiform ( Fig. 6K ); absence of teeth on dorsal valve; ventral valve with tiny teeth on apex. Coloration . General color pattern similar to males ( Fig. 7 ). Ovipositor with general coloration light brown with areas dark brown ( Fig. 6K ). Nymph. Old nymphs are very similar to adults, except by wings not developed, with coloration light green with areas pale yellow ( Figs. 8A–B ). Young nymphs are strongly different from adults, with the red stripe of eyes absent, dorsal region of body with longitudinal stripe and spots dark green; abdominal apex dorsally with dark brown spot ( Fig. 8C ).