Pseudocosmetura yaoluopingensis sp. nov. Figs 2, 3, 4

Type specimens. -

Holotype: CHINA • ♂, Anhui, Yuexi, Yaoluoping, 19.IX.2019, leg. Tao Wang, MHU. Paratypes: CHINA • 1♂, Anhui, Yuexi, Yaoluoping, 19.IX.2019, leg. Tao Wang, MHU • 1♀, Anhui, Yuexi, Yaoluoping, 18.IX.2019, leg. Yanqing Li, MHU.

Description . -

Male. Body small, somewhat robust. Fastigium verticis conical, apex obtusely rounded with a longitudinal sulcus on dorsal surface. Eyes approximatively globular and distinctly protruding forward and outward. Apical segment of maxillary palpus longer than subapical one, slightly swollen apically, truncate.

Pronotum feebly long, reaching middle part of second abdominal tergite; anterior margin straight while posterior margin arc-shaped (Fig. 2A), metazona slightly raised (Fig. 2B); lateral lobe longer than deep, posterior margin slightly expanded ventrally, without humeral sinus (Fig. 2B).

Tegmina short, covered by pronotum, visible in lateral view; hind wings absent.

All femora unarmed ventrally, genicular lobes with apices obtuse. Fore coxae with 1 small spine; fore tibiae with 5 spines respectively on inner and outer sides of ventral surface, tympanal organs open on both sides, ovoid. Middle tibiae with 4 inner and 5 outer spines on ventral surface. Hind tibiae with 21-24 spines separately on both sides of dorsal surface, bearing one pair of ventral apical spurs and one pair of dorsal apical spurs.

Lateral margins of ninth abdominal tergite strongly prolonged posteriorly (Fig. 2C), terminals obtusely rounded and bent inward. Tenth abdominal tergite expanded posteriorly, with a U-shaped concavity in the middle, lateral lobes conical, bent inward and backward, terminals somewhat blunt (Fig. 2G, I). Epiproct fused with tenth abdominal tergite, peltate. Cerci markedly bent inward, inner margins of 2/3 apical area concave, grooved (Fig. 2I); apical areas with a small odontoid. Genitalia sclerotized, exposed, surpassing posterior margin of tenth abdominal tergite, basal area robust, apical area slim, split in the middle (Fig. 2G, I). Subgenital plate nearly trapezoidal, broad at base, with a triangular concavity in the middle; midline with longitudinal carinae, posterior margin truncate; styli stout and short, inserted on apico-lateral margins of subgenital plate (Fig. 2H).

Female. Pronotum slightly shorter than male, reaching posterior margin of first abdominal tergite, metazona not raised (Fig. 2D, E); metazona of lateral lobe gradually tapering (Fig. 2E). Lateral margins of eighth and ninth abdominal tergum feebly prolonged posteriorly (Fig. 2K). Tenth abdominal tergite short and broad, center of posterior margin concave, lateral angles somewhat blunt (Fig. 2F). Epiproct slightly small, triangular, blunt apically. Cerci conical, apical areas subacute. Subgenital plate trapezoidal, longer than wide, median carinae distinct, posterior margin slightly concave in the middle (Fig. 2J). Ovipositor stout, robust at base, apical half bent dorsad, apical area subacute; dorsal and ventral margins smooth (Fig. 2K).

Coloration. -

Body yellowish green, green when alive. Eyes brown. Disc of pronotum with 1 longitudinal light brown stripe, of which lateral margins black brown, outer margins of stripe with yellowish white longitudinal stripe severally (Fig. 2A, D). Dorsal surface of abdomen with 1 longitudinal black brown stripe in the midline. Apical areas of male cerci light brown. Apices of all third segment of tarsi and claws black brown.

Measurements (mm). -

Body: ♂ 9.2-10.8, ♀10.3-12.5; pronotum: ♂4.3-4.7, ♀3.6-4.4; hind femora: ♂8.6-9.5, ♀9.5-10.7; ovipositor: 6.6-7.8.

Specimens examined. -

CHINA • 1♂, Anhui, Yuexi, Yaoluoping, 18.IX.2019, leg. Yanqing Li, MHU • 2♀, Anhui, Yuexi, Yaoluoping, 18.IX.2019, leg. Tao Wang, MHU.

Acoustics. -

The male calling song of this species is performed only at night and is inaudible to humans. Both echeme duration (3-35 s) and echeme interval (1.6-8.5 s) are irregular (Fig. 3). The echeme consists of more than ten syllables, the amplitude of syllables in the beginning part is small, then gradually increasing. The syllable period is 156 ± 7 ms (n = 600) and the syllable repetition rate is 6.41 Hz. A single syllable consists of more than ten impulses, the amplitude of which gradually increases and then decreases (Fig. 3). The calling song has a large proportion in the ultrasonic range (Fig. 4), and the peak frequency is 33.386 ± 1.71 kHz (n = 600).

Distribution. -

China (Anhui).

Discussion. -

This new species resembles Pseudocosmetura anjiensis (Shi & Zheng, 1998), but differs in the following: male tenth abdominal tergite expanded posteriorly, with a U-shaped concavity in the middle, lateral lobes conical, bent inward and backward, terminals somewhat blunt; female tenth abdominal tergite short and broad, center of posterior margin concave, lateral angles somewhat blunt; subgenital plate trapezoidal, longer than wide.

Etymology. -

The name of the new species is derived from the type locality, Yaoluoping.