Bioacoustics of Australiagraecia gladiator

Differential diagnosis. Male. Size large for genus, form robust ( Table 1 ). Antenna much longer than length of body, annulate ( Fig. 7B ). Eye ovoid, slightly pointing towards middle of body, not especially bulging. Fore and middle tibiae with 2 apical pairs of spines on each side considerably reduced in size relative to the others; dorsal surface of middle tibia with 2 spines. Hind femur armed ventrally on internal margin with 5 stout spines, external margin unarmed. Hind tibia armed dorsally with numerous spines, often alternating in lengths; apex armed dorsally with a pair of subapical spurs, opposite to one another; ventral surface with a few elongate spines on both sides, apex with a pair of spurs, much longer than adjacent spurs. Prothorax with a pair of elongate spines, meso- and metathorax each with a pair of peg-like projections. Tegmen short ( Table 1 ); stridulatory file on raised swelling or blister. Cercus elongate, slender ( Fig. 7F ). Abdomen with 10 th tergite with soft medial impression; supra-anal plate broadly triangulate, not well defined ( Fig. 7C ); paraprocts elongate, digitiform; phallic complex ( Fig. 7H ) without sclerotised rods or basal sclerites. Subgenital plate ( Fig. 7E ) about as broad as long, median incision shallow, style elongate, about as long as one side of median incision. Female. Differs from male in following. Cercus very elongate, gracefully incurved ( Fig. 7A ). Subgenital plate broader than long, apex with typical narrow median incision. Ovipositor long and straight, ( Fig. 7A ) ( Table 1 ) with “cercal guide” prominent. Colouration. General overall colour straw brown. Median brown longitudinal stripe faint, prominent on male pronotum and tegmen but obsolete elsewhere ( Fig. 7D ).