Monaeses xizang 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
Monaeses
Monaeses xizang

description: Monaeses xizang Wang, Lu & Zhang sp. nov.
Figs 1 C, D, 3 M, N, 5, 11
Type material.
Holotype • ♂ (SWUC -T-THO-02-01), China, Xizang, Medog County, Mirage Observation Deck, 29°20'36"N, 95°20'43"E, elev. 1297 m, 8 July 2023, Z. S. Zhang, L. Y. Wang, Q. L. Lu and X. L. Chen leg. Paratype: • 1 ♀ (SWUC -T-THO-02-02), 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 M. aciculus (Simon, 1903) (Song and Zhu 1997: 59, fig. 35 A – H) in having the ventral tibial apophysis of the same shape and spermathecae compressed, but the new species differs from M. aciculus in having the ventral tibial apophysis shorter than retrolateral tibial apophysis (vs as long as retrolateral tibial apophysis in M. aciculus), a short embolus originating at approximately 11 - o’clock (vs long and originating at approximately 8 - o’clock in M. aciculus), and comma-like copulatory ducts (vs U-shaped in M. aciculus) (Fig. 5).
Description.
Male holotype (SWUC -T-THO-02-01, Figs 1 C, 3 M) total length 7.31. Prosoma 2.24 long, 1.82 wide; opisthosoma 5.33 long, 1.24 wide. Carapace yellow brown. Eye sizes and interdistances: AME 0.06, ALE 0.14, PME 0.09, PLE 0.18; AME – AME 0.17, AME – ALE 0.19, PME – PME 0.34, PME – PLE 0.29, ALE – PLE 0.31. MOA 0.40 long, anterior width 0.30, posterior width 0.51. Clypeus height 0.45. Chelicerae yellow brown. Labium and endites yellow brown, longer than wide. Sternum yellow-brown and scutellate, with brown hairs. Leg measurements: I 18.79 (5.43, 6.98, 4.57, 1.81); II 16.96 (5.06, 6.25, 3.94, 1.71); III 6.61 (2.10, 2.57, 1.09, 0.85); IV 7.81 (3.28, 2.52, 1.08, 0.93). Leg formula: 1243. Opisthosoma columnar, yellow brown. Spinnerets yellow-brown.
Palp (Fig. 5 A, B). Tibia ½ length of cymbium. Ventral tibial apophysis columnar, with a curved end. Retrolateral tibial apophysis sclerous, somewhat triangular, with a sharp end. Embolus originating at approximately 11 - o’clock position, slender, curved along with bulb, tip staying in cymbial furrow.
Female paratype (SWUC -T-THO-02-02, Figs 1 D, 3 N) total length 10.70. Prosoma 3.23 long, 2.35 wide; opisthosoma 7.28 long, 1.88 wide. Eye sizes and interdistances: AME 0.07, ALE 0.22, PME 0.11, PLE, 0.19; AME – AME 0.32, AME – ALE 0.27, PME – PME 0.52, PME – PLE 041, ALE – PLE 0.39. MOA 0.49 long, anterior width 0.46, posterior width 0.74. Clypeus height 0.58. Leg measurements: I 16.12 (5.05, 6.17, 3.34, 1.56); II 14.41 (4.53, 5.52, 2.88, 1.48); III 14.30 (4.39, 5.53, 2.98, 1.40); IV 8.37 (3.57, 2.81, 1.11, 0.88). Leg formula: 1234.
Epigyne (Fig. 5 C, D). Epigynal plate almost rounded. Copulatory openings slit-like, distant from each other. Copulatory ducts comma-like. Spermathecae folded. 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