Diversity of the genus Tmarus Simon, 1875 from Xiaolong Mountains in western China (Araneae: Thomisidae) Author Zhang, Rui 0000-0001-6937-6434 Key Laboratory of Zoological Systematics and Application of Hebei Province, Institute of Life Science and Green Development, College of Life Sciences, Hebei University, Baoding, Hebei 071002, P. R. China & 15531220981 @ 163. com; https: // orcid. org / 0000 - 0001 - 6937 - 6434 Author Zhang, Feng 0000-0002-3347-1031 Key Laboratory of Zoological Systematics and Application of Hebei Province, Institute of Life Science and Green Development, College of Life Sciences, Hebei University, Baoding, Hebei 071002, P. R. China & dudu 06042001 @ 163. com; https: // orcid. org / 0000 - 0002 - 3347 - 1031 text Zootaxa 2023 2023-06-08 5301 1 75 93 http://dx.doi.org/10.11646/zootaxa.5301.1.3 journal article 54602 10.11646/zootaxa.5301.1.3 c23a50a4-ed4c-4acc-8265-42b51c1a1330 1175-5326 8027829 1A5F53A2-09C3-467F-9831-A9B99071BF6D Tmarus piger Walckenaer, 1802 Figs 18–21 Tmarus piger Walckenaer, 1802: 229 . Zhu & Wang 1963: 484 , figs 32, 44. For full list of taxonomic references see WSC (2023) . Material examined. CHINA : Gansu Province : 1♁, Maiji district , Liqiao Town , Baihua Forest Farm , 34°18′46″N , 106°19′53″E , 1515m , 22 May 2021 , Rui Zhang leg. Diagnosis. See Yang et.al. 2022. Redescription. Male: total length 3.95. Prosoma 1.54 long, 1.47 wide; opisthosoma 2.41 long, 1.15 wide. Eye sizes and interdistances: AME 0.06, ALE 0.11, PME 0.07, PLE 0.09, AME–AME 0.13, AME–ALE 0.14, PME–PME 0.21, PME–PLE 0.30, AME–PME 0.27, ALE–PLE 0.25. MOA 0.27 long, front width 0.13, back width 0.21. Leg measurements: I 6.39 (2.02, 0.77, 1.78, 1.04, 0.78); II 6.80 (2.06, 0.70, 1.80, 1.34, 0.90); III 3.67 (1.14, 0.46, 0.94, 0.59, 0.54); IV 3.87 (1.34, 0.41, 0.91, 0.62, 0.59). Leg formula: 2143. Abdomen grey-brown with white markings, ventral black centrally, pale on two sides. Palp ( Figs 20–21 ). VTA digitiform, with bending apex; RTA transverse, bending backwards. Spermophor around the whole tegulum, with U-shape apex. Embolus arising from tegulum at 12-o’clock position in ventral view, with unusually wide base and sharp apex. Distribution. China ( Jilin , Gansu , Hebei , Shanxi , Henan , Shaanxi ), Europe, Turkey , Caucasus, Russia (Europe to Far East), Kazakhstan , Korea , Japan .