Tmarus piger Walckenaer, 1802

Zhang, Rui & Zhang, Feng, 2023, Diversity of the genus Tmarus Simon, 1875 from Xiaolong Mountains in western China (Araneae: Thomisidae), Zootaxa 5301 (1), pp. 75-93 : 82

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.

Figures

FIGURES 18–21. Tmarus piger Walckenaer, 1802. 18–19 Male habitus (18 dorsal, 19 ventral); 20–21 Left male palp (20 ventral, 21 retrolateral). E = embolus; RTA = retrolateral tibial apophysis; T = tegulum; VTA = ventral tibial apophysis.