Bioacoustics of Xizicus (Eoxizicus) brevicaudus

( Fig. 2 ) Description. Male. Body small. Head. Fastigium verticis conical, dorsal surface with a median longitudinal sulcus, apex rounded. Eyes globular, protruding forwards. Apical segment of maxillary palpus nearly equal to subapical one, apical area slightly inflated. Thorax . Pronotum with anterior margin straight, posterior margin rounded; lateral lobe longer than high, humeral sinus comparatively distinct. Thoracic auditory spiracle exposed, oval. Tegmina and wings . Tegmina narrow, surpassing apices of hind femora, apices rounded. Stridulatory area of male left tegmen with Cu2 vein spindle-shaped, middle area of Cu2 vein robust and narrowing towards both ends ( Fig. 3B ). Stridulatory file on ventral surface of left tegmen with 93–95 teeth, teeth on basal third of stridulatory file moderately spaced, apical two thirds densely arranged, last teeth near apex indistinct and irregularly arranged. Stridulatory file narrowing from base to apical area ( Fig. 4B ). Hind wings slightly longer than tegmina. Legs. All femora unarmed on ventral surfaces. Fore coxa with 1 spine, fore tibia with 5 external and 4 internal long spines on ventral surface, bearing 1 pair of short ventral apical spurs; tibial tympana open on both sides. Ventral surface of middle tibia with 4 inner spines and 5 outer long spines, bearing 1 pair of short ventral apical spurs. Genicular lobes of hind femur with apices rounded on both sides. Internal and external margins of hind tibia with 27–31 short spines on dorsal surface respectively, bearing 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs. Abdomen. Posterior margin of tenth abdominal tergite with a pair of short, cylindrical processes, which bases closer and apices more separated ( Fig. 2C ). Cercus short, base stout, interno-dorsal surface on base with a lamellate expansion slightly concave ventrad; interno-ventral surface with a thickened expansion near base, apex of expansion with a spine-shaped projection ( Fig. 2C, D, E ); apical half of cercus narrow and flattened, apex rounded ( Fig. 2C, D, F ). Basal half of subgenital plate with a weakly sclerotized triangular area, slightly concave ventrad; middle area broad, narrowing, posterior margin rounded. Styli conical and apices rounded, inserted on ventral surface of subapical area of subgenital plate ( Fig. 2E ). Coloration. Body light green when alive. Pronotal disc with a pair of longitudinal blackish brown stripes. Apices of genicular lobes of hind femora black. All spines and spurs of hind tibiae brown. Female. Unknown.