Tamdaora spina, Cui & Bian, 2025

Tamdaora spina sp. nov.

刺ṱ三îŝ

Figure 1 View FIGURE 1

Description. Male. Body large. Head. Fastigium verticis conical, projecting forward, dorsal surface with median furrow ( Fig. 1A View FIGURE 1 ). Eyes nearly globular, protruding outward. Apical segment of maxillary palp longer than subapical one, apex inflated ( Fig.1B View FIGURE 1 ). Thorax. Pronotum short, anterior margin faintly projecting, posterior margin narrowly rounded, with posterior transverse sulcus ( Fig. 1A View FIGURE 1 ); lateral lobes longer than high, narrowing to backward, anterior angle arched, posterior angle obtusely rounded, posterior margin with indistinct humeral sinus ( Fig. 1B View FIGURE 1 ). Tegmina and wings. Tegmina far surpassing the apex of postfemur; hind wings longer than tegmina. Legs. Procoxae with 1 small spine. All femora unarmed on ventral surfaces; apices of genicular lobes of postfemora obtuse. Protibiae ventrally with 4–5 internal and 4 external spines; tympana open on both sides, oblong. Mesotibiae with 5 internal and 4 external spines on ventral surface. Posttibiae with 22–24 internal and 25–27 external spines on dorsal surface, ventrally with 3–5 internal and 4–6 external spines, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs. Abdomen. Posterior margin of tenth abdominal tergite prolonged backwards, apical margin widely rounded ( Fig. 1C View FIGURE 1 ). Cercus gradually tapering, apical half faintly depressed, slightly curved inwards and upwards, tip obtuse ( Fig. 1D, H View FIGURE 1 ); middle area with 1 internal spine on ventral margin, its tip acute ( Fig. 1C View FIGURE 1 ), following with 1 indistinct process on internal margin ( Fig. 1C View FIGURE 1 ). Epiproct with 1 ovoid median process directed downwards, both margins of the median process tapering with indistinct teeth ( Fig. 1G View FIGURE 1 ); with 1 pair of large lateral lobes, which bifurcated ( Fig. 1F View FIGURE 1 ): the upper lobe prolonged backwards with converging and strongly incurved apical area, tip acute ( Fig. 1D View FIGURE 1 ), the lower lobe wide and directing downward with obtuse tip ( Fig. 1F View FIGURE 1 ). Subgenital plate longer than wide, with lateral margins in about basal half convex, afterwards narrowing, faintly concave; apical area bilobate with a small median excision ( Fig. 1K View FIGURE 1 ); ventral surface with triangular membranous area from base ( Fig. 1K View FIGURE 1 ). Styli slender, apices obtuse, located on both sides of apical area of subgenital plate ( Fig. 1K View FIGURE 1 ).

Female. Unknown.

Coloration. Body yellowish green when alive. Eyes black. Internal margins of scape and pedicel, and flagellum brownish. Fastigium verticis black. Dorsal surface of head with longitudinal yellowish-brown stripe, extending to the posterior margin of pronotum. Posttibae yellowish brown.

Material examined. Holotype: male, Dulongjiang, Gongshan , Yunnan, August 22, 2024, coll. by Ting Luo and Yanting Qin.

Measurements (mm). Body: ♂ 14.5; pronotum: ♂ 5.2; tegmen: ♂ 23.7; postfemur: ♂ 13.3.

Distribution. Yunnan (Gongshan).

Discussion. This species differs from Tamdaora magnifica Gorochov, 1998 ( Fig. 2 View FIGURE 2 ) by: male cercus with 1 large internal spine before middle area ( Fig. 1D View FIGURE 1 ); male epiproct with 1 ovoid median process, which tips tapering and directing downward ( Fig. 1G View FIGURE 1 ), and with 1 pair of large lateral lobes which bifurcated ( Fig. 1F View FIGURE 1 ), the upper lobe projecting backward with acute tip ( Fig. 1D View FIGURE 1 ) and the lower lobe directing downward with obtuse tip ( Fig. 1F View FIGURE 1 ); posterior margin of male subgenital plate excavated in middle ( Fig. 1K View FIGURE 1 ).

Etymology. The new species name refers to male cerci with one internal spine before middle area.