Bioacoustics of Meiyingia jinyunensis

Description . Habitus of adults ( Fig. 1–2 ). Moderate body size, 12.0– 12.1 mm long; 2.1mm wide between humeri; Head, antennae, stridulating organ black. Pronotum yellowish brown with a black spot at front middle. Elytra black with dark blue luster. Legs dark brown. Antennae with fringe of long setae on venter of antennomeres 3–6. Elytral surface densely clothed with pale brown pubescence. All covered with brown hairs. Body compressed and elongate. Head compressed and coarsely punctate, narrower than pronotum at widest point. Frons nearly flat, transverse; Eyes small with fine facets, divided into two widely separated lobes; lower lobes longer than genae. Interantennal region strongly impressed with antennal tubercles strongly elevated. Antenna of male extending beyond elytral apex by 3 antennomeres; third antennomere longer than scape and fourth; antennomere ratio: 6.3 - 1.0 - 10.0 - 8.6 - 8.6 - 5.9 - 5.9 - 4.0 - 3.6 - 3.1 - 2.7; scape stout and cylindrical, surface with coarse grain; third to seventh antennomere with spiny processes ventrally ( Fig. 3 b). Antenna of female reaching elytral apex, and spine absent ventrally ( Fig. 3 c). Pronotum as long as wide, disc slightly convex with sparse punctures; each side convex posteriorly, with wrinkles. Pronotum of female lacking wrinkles. Scutellum almost square, concave in middle. Stridulatory organ trapezoid, with sparse, erect, long, pale hairs on the surface ( Fig. 3 d &3e). Elytra 4 times longer than humeral width, narrowed towards the apex; apex rounded; disc punctate. Profemora stouter than meso- and metafemora. Hind femora reaching the posterior edge of second visible abdominal segment. First hind tarsal segment longer than following two combined. Metasternum with concave. Prosternal process extremely short. Abdomen with small punctures, with relatively sparse moderately long semi-erect pale yellow hairs. Abdomen of female lacking depression or specific hairs. Male genitalia : Lateral lobes of tegmen elongate, wide at base, dorsal surface apically covered with long setae ( Fig. 4b ). Median lobe stout, median struts less than half length of median lobe; ventral plate longer than dorsal plate; ventral plate with apex sharpened ( Fig. 4a ) Hind Wing ( Fig. 4 c): Length: 9.6 mm ; width: 3.0 mm. Main branch strong; r3 long; r4 weak, nearly absent; with long RP ; MP3+4 forked in the end; two branches in McuF; AP3+4 strong.