Sinothomisus beibeng Wang, Lu & Zhang 2024, sp. nov.
Creators: name: Wang, Lu-Yu
name: Mu, Yan-Nan
name: Lu, Qian-Le
name: Xu, Yong-Qiang
name: Bu, Hai-Tao
name: Zhang, Feng
name: Zhang, Zhi-Sheng
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Thomisidae
Sinothomisus
Sinothomisus beibeng

description: Sinothomisus beibeng Wang, Lu & Zhang sp. nov.
Figs 3 E, F, 7, 11
Type material.
Holotype • ♂ (SWUC -T-THO-03-01), China, Xizang, Medog County, Beibeng Township, Damu, 29°14'51"N, 95°11'1"E, elev. 924 m, 28 June 2018, L. Y. Wang, Y. N. Mu and Z. S. Wu leg. Paratype: • 1 ♀ (SWUC -T-THO-03-02), same data as for holotype.
Etymology.
The specific name is derived from the type locality; it is a noun in apposition.
Diagnosis.
The new species resembles S. liae Tang, Yin, Griswold & Peng, 2006 (Tang et al. 2006: 65, figs 1–13) in having a similar shaped retrolateral tibial apophysis, but it differs from the latter by the retrolateral tibial apophysis which is shorter than the bulb (vs equal in length to the bulb in S. liae), the long, thin apical tegular apophysis (vs short and wide in S. liae), and the C-like spermathecae (vs caterpillar-like in S. liae) (Fig. 7). This new species also resembles S. dawai Wang, Lu & Zhang, sp. nov.; see diagnosis for S. dawai.
Description.
Male holotype (SWUC -T-THO-03-01, Fig. 3 E) total length 4.03. Prosoma 2.19 long, 2.12 wide; opisthosoma 1.96 long, 1.56 wide. Carapace border black, with a large, deep-brown spot in the middle. Eye sizes and interdistances: AME 0.08, ALE 0.17, PME 0.02, PLE 0.16; AME – AME 0.22, AME – ALE 0.23, PME – PME 0.26, PME – PLE 0.47, ALE – PLE 0.19. MOA 0.22 long, anterior width 0.37, posterior width 0.30. Clypeus height 0.22. Chelicerae brown. Labium and endites brown, longer than wide. Sternum brown and scutellate, with brown hairs. Leg measurements: I 8.09 (2.39, 2.89, 1.65, 1.16); II 8.36 (2.46, 3.07, 1.64, 1.19); III 5.27 (1.70, 1.96, 0.84, 0.77); IV 5.25 (1.71, 1.90, 0.94, 0.70). Leg formula: 2134. Opisthosoma oval, yellow, with a black spot. Spinnerets brown.
Palp (Fig. 7 A, B). Tibia longer than wide. Ventral tibial apophysis small, thumb-shaped, near retrolateral tibial apophysis. Retrolateral tibial apophysis four times longer than ventral tibial apophysis, jellyfish-shaped in retrolateral view. Dorsal tibial apophysis small, conical. Bulb flat, apical tegular apophysis thin and long. Embolus filiform, originating at approximately 6 - o’clock position, curved along with bulb, tip staying in cymbial furrow.
Female paratype (SWUC -T-THO-03-02, Fig. 3 F) total length 4.86. Prosoma 2.37 long, 2.17 wide; opisthosoma 2.48 long, 2.32 wide. Eye sizes and interdistances: AME 0.08, ALE 0.19, PME 0.02, PLE 0.16; AME – AME 0.23, AME – ALE 0.26, PME – PME 0.26, PME – PLE 0.52, ALE – PLE 0.23. MOA 0.26 long, anterior width 0.40, posterior width 0.32. Clypeus height 0.25. Leg measurements: I 6.90 (2.13, 2.60, 1.26, 0.91); II 7.16 (2.24, 2.62, 1.30, 1.00); III 4.85 (1.56, 1.87, 0.70, 0.72); IV 4.81 (1.60, 1.73, 0.81, 0.67). Leg formula: 2134.
Epigyne (Fig. 7 C, D). Epigynal plate as long as wide. Copulatory openings slit-like, distant from each other. Copulatory ducts S-like. Spermathecae C-shaped. Fertilization ducts crescent-shaped.
Distribution.
Known only from the type locality, Medog, Xizang, China (Fig. 11).
description: Published as part of Wang, Lu-Yu, Mu, Yan-Nan, Lu, Qian-Le, Xu, Yong-Qiang, Bu, Hai-Tao, Zhang, Feng & Zhang, Zhi-Sheng, 2024, Description of six new crab-spider species and first description of the male of Pharta xizang Liu & Yao, 2023 from Medog, Xizang, China (Araneae, Thomisidae), pp. 195-213 in ZooKeys 1217 on pages 195-213, DOI: 10.3897/zookeys.1217.127555