Septsigilla tongbiguan Zhang & Zhang 2025, sp. nov.

Septsigilla tongbiguan Zhang & Zhang sp. nov. (DZ壁关七se) Figs 1–3, 7A, 8A, 9 Type material. Holotype ♂ (MHBUARA-2024-887-1), Yunnan, Yingjiang County, Tongbiguan Town, 24.5915°N, 97.6776°E, 1336.2 m elev., 9 October 2024, leg. K. Yu, Y. Ni and Y. Xu. Paratypes. 6♂ 4♀ (MHBUARA-2024-887- 2–11), same data as holotype. Other material examined. 1♂ 2♀ (MHBUARA-2024-881-1–3), Yunnan, Yingjiang County, Tongbiguan Town, 24.6268°N; 97.6395°E, 1371.6 m elev., 5 October 2024, leg. K. Yu, Y. Ni and Y. Xu; 2♀ (MHBUARA-2024- 64-1–2), Yunnan, Longling County, Longjiang Town, 98.7670°E, 24.8259°N, 2183 m elev., 5 April 2024, leg. J. Zhao and X. Qi. Etymology. The specific name is a noun in apposition derived from the type locality. Diagnosis. The new species resembles Septsigilla zhongi sp. nov., but can be distinguished by: 1) chelicera with three retromarginal teeth (vs. chelicera with two retromarginal teeth); 2) the patella without apophysis (DPA, Figs 3A, C; vs. the patella presents an apophysis on its dorsal part, Figs 6A, C); 3) the smooth embolus without any apophysis (Figs 3A‒C, 8A; vs. the embolus with three small embolic teeth on its distal two thirds, Figs 6A‒C, 8B); 4) the top margin of the connecting tube obviously higher than the bursa (Fig. 3E; vs. the top margin of the connecting tube close to the bursa, Fig. 6E). Description. Male holotype (Figs 1A‒B, 2A‒D) total length 6.52; prosoma 3.33 long, 2.63 wide; opisthosoma 3.20 long, 1.80 wide. Eye sizes and interdistances: AME 0.09, ALE 0.13, PME 0.12, PLE 0.13; AME‒AME 0.09, AME‒ALE 0.05, ALE‒ALE 0.34, PME‒PME 0.11, PME‒PLE 0.12, PLE‒PLE 0.60, ALE‒PLE 0.06. OAW 0.77, CRW 1.30, OAW/CRW 0.59, MOA 0.34 long, anterior width 0.25, posterior width 0.37, posterior eye row slightly wider than anterior eye row. CH 0.13, CH /AME 1.44. Endites and labium yellowish-brown. Sternum yellow, 1.60 long, 1.29 wide. Leg measurements: Ⅰ 9.10 (2.43, 0.99, 2.28, 1.91, 1.49), II 7.60 (2.24, 0.93, 1.72, 1.45, 1.26), III 6.82 (2.02, 0.89, 1.25, 1.69, 0.97), IV 9.25 (2.51, 0.84, 2.10, 2.76, 1.04); leg formula 4123. Leg spination: femora: Ⅰ d1-1-1, p0-0-2; II d1-1-1, p0-0-1; III d1-1-1, p0-1-1, r0-1-1; IV d1-1-1, p0-1-1, r0-0-1. Tibiae: Ⅰ p0-0-1, v1-2-2; II p0-1-1, v1-2-1; III d1-0-0, p1-1-0, r1-1-0, v2-2-2; IV d1-0-0, p1-1-0, r1-1-0, v2-2-2. Metatarsi: Ⅰ v2-2-0; II p0-1-0, v2-2-0; III d2-2-2, p1-1-1, r1-1-1, v2-2-2; IV d2-2-2, p1-1-1, r1-1-1, v2-2-2. Opisthosoma dorsally grey, with a pair of white, irregular stripes and five pairs of white transverse stripes. Palp (Figs 3A–C, 8A). RTA hook-shaped in retrolateral view, with rectangular extension at base. Cymbial concavity developed, about half as long as cymbium. Posterior elongation of tegulum extending to median part of tibia. Embolus originating at 7- to 8-o’clock-position from tegulum, extending clockwise to 2-o’clock-position, then curving towards the distal end of cymbium. Conductor fan-shaped. Female paratype (Figs 1C–D, 2E, MHBUARA-2024-887-8) total length 6.56, prosoma 3.11 long, 2.19 wide; Opisthosoma 3.45 long, 1.92 wide. Eye sizes and interdistances: AME 0.09, ALE 0.13, PME 0.12, PLE 0.12; AME‒AME 0.08, AME‒ALE 0.05, ALE‒ALE 0.35, PME‒PME 0.12, PME‒PLE 0.13, PLE‒PLE 0.59, ALE‒PLE 0.07. OAW 0.77, CRW 1.44, OAW/CRW 0.53, MOA 0.35 long, anterior width 0.27, posterior width 0.35. CH 0.12, CH / AME 1.33. Leg measurements: I 7.11 (2.09, 0.94, 1.77, 1.32, 1.00), II 6.52 (1.93, 0.98, 1.45, 1.28, 0.88), III 6.05 (1.78, 0.87, 1.18, 1.44, 0.78), IV 8.44 (2.39, 1.02, 1.78, 2.30, 0.94); leg formula 4123. Labium 0.49 long, 0.41 wide. Sternum 1.52 long, 1.31 wide. Leg spination: femora: Ⅰ d1-1-1, p0-0-1; II d1-1-1, p0-0-1; III d1-1-1, p0-1-1, r0-0-1; IV d1-1-1, p0-1-1, r0-0-1. Tibiae: Ⅰ v1-1-1; II v0-1-1; III: d1-0-0, p1-1-0, r1-1-0, v2-2-2; IV d1-0-0, p1-1-0, r1-1-0, v2-2-2. Metatarsi: Ⅰ v2-2-0; II v2-1-0; III d2-2-2, p1-1-1, r1-1-1, v2-2-2; IV d2-2-2, p1-1-1, r1-1-1, v2-2-2. Coloration like male. Epigyne (Fig. 3D‒E). Epigynal plate as long as wide. Posterior triangular atrium width about three times its length in ventral view. Primary spermatheca spherical, separated by about its diameter, secondary spermatheca similar in size to primary spermatheca. Copulatory duct rectangular, bending at median part. Anterior bursae oval. Connecting tubes flattened sac-like, inner margins converging in median section. Distribution. China: Yunnan (Fig. 9).