Bioacoustics of Phlugiolopsis (Omkoiana) damingshanis

(Map 1, Figs. 1 , 3 : E–H, 4: A, C) Male. Body small. Fastigium verticis conical, apex obtuse, furrowed in midline. Eyes oval, obviously protruding outwards. The mandibles are asymmetrical. Left mandible is slightly shorter than right one, teeth prominent, positioned along two-thirds the length of the internal margin; incisor elongate, sharp, dentes sharp; molar area short, low. Right mandible with stout, subacute incisor and dens. Apical segment of maxillary palpi slightly longer than subapical one, apex slightly inflated. Pronotum short, anterior margin comparatively straight, metazona slightly raised, posterior margin obtusely rounded; lateral lobe longer than high, humeral sinus absent. Ventral margin of all femora without spines. Procoxa with 1 small spine. Pro- and mesotibia with 4 internal spines and 5 external spines on ventral margin, and 1 pair of ventral apical spurs. Tibial tympana opened on both sides, oval. Genicular lobes of postfemur with apices obtuse; posttibia with 25–27 dorsal spines on each side, 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs. Tegmina comparatively longer than these of other species of the genus Phlugiolopsis , obviously visible in lateral view, posterior margin reaching the middle area of the fourth abdominal tergite, partially covered by metazona. Costal field faintly widened at base and tapering towards apex; tegminal venation strongly reduced; veins Sc and R close together, parallel along their entire length; stridulatory area of left tegmen with large, poorly defined. Stridulatory file elevated on thickened vein, strongly sinuous in proximal fourth, L-shaped, 0.895mm long, with 55–56 teeth, main teeth very robust. Hind wings absent. MAP 1. Distribution of Phlugiolopsis damingshanis Bian, Shi & Chang sp. nov. and Phlugiolopsis huangi Bian, Shi & Chang sp. nov. Posterior margin of tenth abdominal tergite concave in middle. Basal half of cerci stout, interno-dorsal margin with 1 semicircular lobe, the subapical area with 1 very small rounded-cornered process, interno-ventral margin with 1 comparatively long, compressed process, the apex obtuse; apical half faintly compressed, tapering, incurved, apex obtuse. Subgenital plate with base broad, narrowing, basal margin nearly trapezoid excavate; lateral margins bent ventrad; posterior margin strongly projecting, apex obtusely rounded. Subapex of subgenital plate with slender styli on ventral margin, apices obtuse. Female. Appearance slightly larger than male. Metazona short, nearly flat. Lateral margin of eighth abdominal tergite protruding backwards, the apex with 1 small, distinct or indistinct buninoid process; lateral margin of ninth abdominal tergite slightly arched concave; posterior margin of tenth abdominal tergite with 1 faintly concavity in middle. Epiproct triangular. Cerci stout, conical, apices acute. Ovipositor gently curved upwards, base stout, narrowing, dorsal valvulae faintly longer than ventral ones; dorsal valvulae sharply pointed and ventral ones with 1 small terminal hook. Subgenital plate comparatively short, basal half slightly broad, basal margin slightly arched excavate; lateral margin expanded, curved dorsad; apical half obviously narrowing, nearly triangle, posterior margin with 1 faintly concavity in middle. Coloration. Body yellowish brown (discoloured as originally preserved in alcohol). Internal margin of antennal socket, scape and pedicel black brown, flagellum yellowish brown, with some annulate brown stripes. Eyes brown. Dorsum of head with 4 black brown stripes: outer stripes reaching antennal socket; medial 2 stripes fused in fastigium verticis. Disc of pronotum brown, which gradully broadened in metazona, outer area slightly darker. Apices of tegmina black brown. Apical area of genicular lobes of all femora black, ventral spines of all tibiae brown. Dorsum of abdominal tergites black brown, sternites light brown. Basal area of male subgenital plate black brown, apical area yellowish brown. Buninoid process of female eighth abdominal tergite black brown, subgenital plate yellowish brown.