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) Author Wang, Lu-Yu 0000-0002-5250-3473 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China Author Mu, Yan-Nan 0000-0002-2504-673X Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China Author Lu, Qian-Le 0000-0001-6291-9117 College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518000, China Author Xu, Yong-Qiang 0000-0002-1889-9531 Institute of Plateau Biology of Xizang Autonomous Region, Lhasa 850001, Xizang Autonomous Region, China & Medog Biodiversity Observation and Research Station of Xizang Autonomous Region, Medog, China Author Bu, Hai-Tao Institute of Plateau Biology of Xizang Autonomous Region, Lhasa 850001, Xizang Autonomous Region, China & Medog Biodiversity Observation and Research Station of Xizang Autonomous Region, Medog, China Author Zhang, Feng 0000-0002-3347-1031 Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, Hebei 071002, China Author Zhang, Zhi-Sheng 0000-0002-9304-1789 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China text ZooKeys 2024 2024-11-01 1217 195 213 journal article 304942 10.3897/zookeys.1217.127555 79db83b5-547d-4a1f-9977-d653334f90c6 B7E1DDC6-9834-42EA-A80E-77ABAADF14F1 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 ).