Phlugiolopsis placentis, Yao & Bian & Zhang, 2025

Phlugiolopsis placentis sp. nov.

小圆叶吟ª

Figures 5 View FIGURE 5

Description. Male. Body small. Fastigium verticis conical, furrowed along the midline ( Fig. 5A View FIGURE 5 ). Eyes spherical, projecting outwards. Apical segments of maxillary palpi longer than subapical ones, apices slightly inflated ( Fig. 5B View FIGURE 5 ). Thorax. Anterior margin of pronotum nearly straight, posterior margin rounded ( Fig. 5B View FIGURE 5 ); lateral lobes longer than high, narrowing to backward, humeral sinus indistinct ( Fig. 5B View FIGURE 5 ). Legs. Fore coxae with 1 small spine. All femora unarmed on ventral surfaces, apices of genicular lobes of hind femora obtusely rounded. Fore tibiae ventrally with 3–4 internal spines, 4 external of spines and 1 pair of apical spines; tibial tympana open on both sides, ovoid. Middle tibiae ventrally with 2–4 internal spines, 3–4 external spines and 1 pair of apical spines. Hind tibiae with 16–21 pairs of spines on dorsal surfaces, ventral surfaces with 2 internal and 3 external spines, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs. Tegmina and wings. Tegmina short and slightly surpassing the posterior margin of pronotum, reaching the middle of second abdominal tergite. Hind wings absent ( Fig. 5B View FIGURE 5 ). Abdomen. Posterior margin of tenth abdominal tergite faintly excavated in middle ( Fig. 5C View FIGURE 5 ). Cercus short, basal half with 1 semicircular lobe on interno-dorsal margins ( Fig. 5D View FIGURE 5 ), apical half spoon-shaped ( Fig. 5E View FIGURE 5 ); ventral margin with 1 triangular lobe ( Fig. 5F View FIGURE 5 ). Subgenital plate longer than wide, base transverse, lateral margins rolling dorsad and converging, posterior margin faintly projecting ( Fig. 5F View FIGURE 5 ). Styli slender, apices obtuse, inserted on postero-lateral angles of subgenital plate ( Fig. 5F View FIGURE 5 ).

Female. Larger than male. Tenth abdominal tergite narrow posteriorly faintly concave. Cercus conical, apex acute. Ovipositor moderately upcurved, stout at base, narrowing toward tip, apices of dorsal valvulae acute, ventral valvulae with an indistinct hook at apices ( Fig. 5H View FIGURE 5 ). Subgenital plate semielliptical, posterior margin rounded with a small median concavity ( Fig. 5I View FIGURE 5 ).

Coloration. Body blackish. Eyes brown.Antennal socket and internal margins of basal two segments of antennae black, flagellum with blackish ring at apical area of each segment. Dorsal surface of head with four longitudinal blackish brown stripes. Disc of pronotum with a longitudinal black stripe on both sides, between them blackish brown. Apices of femora and tarsi blackish brown. Abdominal tergites and sternites blackish brown.

Measurements (mm). BL: ♂ 6.8–7.3, ♀ 8.7; PL: ♂ 3.0–3.3, ♀ 3.7; TL: ♂ 1.1–1.3, ♀ 1.4; HFL: ♂ 6.2–6.6, ♀ 8.0; OvL: 4.8

Material examined. Holotype: male, Xiaoheishan, Longling , Yunnan, September 5, 2024, coll. by Ting Luo and Yanting Qin . Paratypes: 1 female, the other information as holotype; 1 male, Dahaoping, Gaoligongshan, Tengchong , Yunnan, September 1, 2024, coll. by Ting Luo and Yanting Qin .

Distribution. Yunnan (Longling, Tengchong).

Discussion. The new species differs from other species of Phlugiolopsis by the shape of male cerci: interno-dorsal margin with 1 circular lobe, directing upward; middle area with 1 triangular ventral process; apical area expanded on dorsal margin, apical margin bifurcated in lateral view.

Etymology. Named according to the male cerci bearing a circular lobe on interno-dorsal margin.