Onycholabis tengjhihensis Bolkiboev & Liang sp. nov.Fig. 1 AChinese common name.藤枝爪步甲.Type material.Holotype. ♂ (TARI), China • Taiwan Province, Kaohsiung City, Taoyuan District, Baoshan Township, Tengjhih, 23.05667°N, 120.73917°E, 1220 m, 1996.08. 08, leg. C. C. Chen, Holotype Onycholabis tengjhihensis det. Bolkiboev & Liang, 2026 [red label]. Paratypes. total 4 ♀♀ and 3 ♂♂ (IZCAS and TARI) • 1 ♀, China, Taiwan Province, Ilan County, Tatung Township, 1998.04. 11, leg. C. C. Chen • 1 ♀, China, Taiwan Province, Nantou County, Chushan Town, Shanlinxi, 2008.08. 28, leg. Chen C. C. • 1 ♂, China, Taiwan Province, Taoyuan County, Fuhsing Township, Lalashan, 1994.5. 8, leg. C. C. Chen • 1 ♂, China, Taiwan Province, Taitung County, Haituan Township, Wulu Village, 2008.10. 22, leg. W. S. Lin • 1 ♂, China, Taiwan Province, Pingtung County, Taiwu Township, Peidawushan, 22.61417°N, 120.79361°E, 1200 m, 2022.08. 25, leg. Y. T. Chung, C. C. Chen • 1 ♀, China, Taiwan Province, Taitung County, Peinan Township, Likia Forest Road, 1200 m, 2009.08. 28., leg. W. I. Chou • 1 ♀, China, Taiwan Province, Hualien County, Hsiulin Township, Taroko National Park, 60–500 m, 2010.05. 13, leg. W. I. Chou. Each paratype bears a yellow label: Paratype Onycholabis tengjhihensis det. Bolkiboev & Liang, 2026.Description.Length: 9.2–10.8 mm.Coloration: Body black, shiny dorsally; mandibles, labrum reddish brown; antennomeres 1–4 pale yellow, others brown; maxillary palpi pale yellow, apical palpomere brown; legs yellow (tarsomeres 4 and 5, claws brown); ventral side reddish brown to black.Microsculpture: Head hardly visible and formed of isodiametric meshes, pronotum and elytra formed of transverse meshes.Head with large and markedly prominent eyes (HW / FW = 1.74–1.78, mean 1.76, in four males and four females) and markedly constricted neck; tempora short, EYL / TL = 3.00–3.22 (3.15); vertex gently convex with surface very smooth and shiny, frontal furrows deeply concave, subparallel in front and slightly divergent posteriorly, anterolateral surface of frons longitudinally rugose; anterior supraorbital seta situated anterior to mid-eye level, posterior supraorbital seta situated slightly anterior to or on post-eye level; mandibles long, slender, gently curved inwards and gradually narrowing apically; apical maxillary palpomeres slender, shorter than penultimate ones, cylindrical in median portion and truncate at apices; apical labial palpomere shorter than the penultimate one; the latter one bi-setose; median tooth of mentum bifid, with each apex pointed; submentum 4 - setose; antennae filiform, almost reaching the middle of elytra; relative lengths of scape and antennomeres II – XI as follows: 1.3: 0.50: 2.30: 2.10: 1.50: 1.40: 1.40: 1.30: 1.20: 1.00: 1.00.Pronotum cordate, wider than long, widest at about apical one-fifth, slightly narrower than head, PW / HW = 0.94–0.97 (0.95), PW / PL = 1.21–1.25 (1.22), PAW / PBW = 1.17–1.20 (1.18), PW / PAW = 1.30–1.33 (1.32), PW / PBW = 1.52–1.60 (1.57); apical margin widely and rather shallowly emarginate throughout; front angles rounded, obtuse at tips; lateral margins finely reflexed, arcuate before widest parts, rather gradually convergent to basal one-sixth, then strongly sinuate anterior to rectangular, pointed hind angles; single pair of marginal setae situated slightly before widest part; marginal setae at the hind angles are absent; basal margin distinctly bisinuate and unbordered throughout; disc moderately convex, with surface smooth, except for sparse and scattered large punctures along basal and lateral portions; median line deep and complete, basal foveae deep, rugose.Elytra subovate, moderately convex, widest slightly behind middle, much wider than pronotum, EL / EW = 1.58–1.61 (1.59), EW / PW = 1.9–2.0 (1.92); basal border not shortened, slightly curved; shoulders prominent and slightly rounded; lateral margins almost parallel-sided in basal portions, moderately convergent towards apices, subapical sinuation weak; apices conjointly rounded; scutellar striole long, punctate, not reaching interval 1; striae deeply impressed; intervals smooth, slightly convex in basal half and flatter towards apex; interval III with first discal pore at basal one-fifth near stria III and a second just behind middle and near stria II; interval IX with 17 umbilicate pores.Prosternum sparsely punctate, proepisternum smooth, mesosternum smooth or sparsely punctate, mesoepisterna punctate, metasternum and metepisternum smooth; metepisterna long, 1.92 × as long as wide. Sternites 3–5 bi-setose; sixth visible sternite 4 - setose in male, 8 - setose in female.Legs long and slender; metacoxae bi-setose (inner seta absent); metafemora bi-setose; tarsi bisulcate; protarsomeres I – III with DAS and LAS, protarsi sulci shallow, metatarsomere I twice as long as metatarsomere II, metatarsomere IV bilobed, inner lobe equal to outer one, with LAS, metatarsomere V latero-ventrally asetose; claws simple (Fig. 4 A – C).Male genitalia: Median lobe of aedeagus long and slender, moderately arcuate from basal lobe towards apex in lateral view; apical lamella sharply tapered towards the apex, 1.5 × longer than wide, narrowly rounded at the apex; apical orifice ending at two-thirds of median lobe and not reaching basal lobe. Left paramere broadly ovate and rounded at apex; right paramere small and narrow, with rounded apex. Endophallus not covered by tiny tooth-shaped sclerite scales; in lateral view, the endophallus with a broad, weakly convex distinctive fold in the middle section (Fig. 2 A, B).Female genitalia and reproductive tract as in Fig. 3 A, B; apical gonocoxite> 1.5 × shorter than basal gonocoxite, slightly curved with a relatively sharp apex, apical gonocoxite with four dorsolateral and single dorsomedial ensiform setae; basal gonocoxite with apical fringe of 8–11 setae. Bursa copulatrix small, spermatheca long, strongly arcuate, C-shaped, evenly curved throughout, with short duct, and spermathecal gland with moderately large, spherical shape, and long duct.Differential diagnosis.This new species is similar to Onycholabis nakanei Kasahara, 1986 in having the pronotum without posterior marginal setae, and the sixth visible sternites of males 4 - setose, females 8 - setose, but differs by tempora shorter, eyes> 3 × as long as tempora (eyes 1.77–2.08 × as long as tempora in O. nakanei); pronotum slightly narrower than head, PW / HW = 0.94–0.97 (PW / HW = 1.02–1.04 in O. nakanei); elytral interval III with two pores (three pores in O. nakanei); striae distinctly punctate (indistinctly punctate in O. nakanei). Also, the new species is closely related to Onycholabis sinensis Bates, 1873 in having large eyes, and the sixth visible sternite 4 - setose in males; however, it differs in that the pronotum is narrower than head, PW / HW = 0.94–0.97, and without posterior marginal setae (pronotum wider than head PW / HW = 1.05–1.15 and with posterior marginal setae); elytral interval slightly convex (moderately convex in O. sinensis); median lobe of aedeagus moderately arcuate from basal lobe towards apex in lateral view (median lobe of aedeagus moderately arcuate at basal one-third, then almost straight toward apex in lateral view in O. sinensis).Distribution.China (Taiwan: Kaohsiung City, Ilan County, Nantou County, Taoyuan County; Taitung County; Pingtung County) (Fig. 8 B).Habitat.One collector of this species, Mr Chang-Chin Chen, told us that he collected some specimens along the road and the others from the ground where he had set a light trap.Etymology.The new species name tengjhihensis refers to its type locality, Tengjhih, a famous forest recreation area in southern Taiwan.