Bioacoustics of Haplogryllacris

Description. Medium sized to large species. Head rather large, wider than pronotum, robust; frons ovoid, forehead shagreened; fastigium verticis distinctly wider than scapus, separated by a concave suture from fastigium frontis; ocelli distinct; subocular furrows distinct ( Fig. 66B ). Abdominal tergites two and three each with two rows of stridulatory pegs (5, 12–13; 8–9,>10–13; Fig. 66C ). Wings surpassing hind knees ( Fig. 66A ). Tegmen: Radius with two branches, both forked near tip; media anterior free from base, single-branched; cubitus anterior at base with a single branch that forks into two veins just behind basal quarter of tegmen; cubitus posterior undivided, free throughout; with 4 anal veins. Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large ventral spines and one pair of smaller ventral spurs; hind femur with 7–8 external and 6–7 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins with one pre-apical spine; with 3 apical spurs on both sides. Coloration. General color uniformly medium brown, ventral surface yellowish brown; fore legs with anterior margin dark brown. Face dorsal area, base of antenna and labrum red brown, central area blackish brown, compound eyes, ocelli and clypeus yellow, mandibles black, apical segments of maxillary palpi dark brown. Tegmen semitransparent yellow, along fore and hind margins whitish; veins yellow, cross-veins brown; hind wing semitransparent white; veins brown, cross-veins brown, towards base pale. Male unknown. Female. Seventh abdominal sternite prolonged, little bottleneck-shaped, subapical area narrowest; apical area widening laterally with bulging, down-curved margin, little grooved and with transverse furrows before apical margin; in middle of apical area with a distinct rimmed oval groove; apical margin concave. Subgenital plate separated by a rather short membranous zone from preceding sternite; about tongue-shaped with a faint furrow at tip ( Fig. 67B ). Base of ovipositor normal. Ovipositor elongate, slightly upcurved, most strongly in basal area; with gradually approaching lateral margins; tip subobtuse ( Fig. 67A ). Measurements ( 1 female ).—body w/wings: 44; body w/o wings: 37; pronotum: 5.5; tegmen: 31; hind femur: 17; tegmen width: female 11.5; ovipositor: female 17.5 mm .