Pimoa shimian Wang, Yao & Zhang 2025, sp. nov.
Creators: name: Wang, Bing
name: Meng, Qingzhen
name: Yao, Zhiyuan
name: Zhang, Xiaoqing
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pimoidae
Pimoa
Pimoa shimian

description: Pimoa shimian Wang, Yao & Zhang sp. nov.
Figs 1, 2, 3
Type material.
• Holotype: • ♂ (SYNU -Ar 00445), China, Sichuan, Yaan, Shimian Co., Liziping Vill., Menghuocheng Scenic Spot, Red Rock Beach (28.908262 ° N, 102.358586 ° E, 2651 m), 9 Jun. 2024, X. Zhang et al. leg. • Paratypes: • 2 ♀ (SYNU -Ar 00446–47), same data as for the holotype.
Etymology.
The specific name refers to the type locality; noun in apposition.
Diagnosis.
The male of Pimoa shimian sp. nov. resembles those of P. bomi (Fig. 4 A, C, E; Xu et al. 2021: 9, figs 3, 54 B) and P. reniformis (Fig. 4 B, D, F; Xu and Li 2007: 493, figs 36–41), but can be distinguished by the tegulum (T) with pointed apophysis (blue arrow in Fig. 2 B) (vs. tegulum without apophysis, Fig. 4 C, D) and by the U-shaped pimoid cymbial sclerite (PCS, Fig. 2 B) (vs. V-shaped, Fig. 4 C – F). The female of P. shimian sp. nov. resembles those of P. bomi (Fig. 5 A, B, E, F; Xu et al. 2021: 9, fig. 4 A, B) and P. reniformis (Fig. 5 C, D, G, H; Xu and Li 2007: 493, figs 42–47), but can be distinguished by the distally broad dorsal plate (DP), posterior part about 1 / 2 width of middle part (Fig. 3 A, B) (vs. distally narrow dorsal plate, posterior part about 1 / 3 width of middle part, Fig. 5 E, G) and the spermathecae (S) separated by ca. 1 / 3 a spermathecal width (Fig. 3 A, B) (vs. spermathecae unseparated, Fig. 5 A, C).
Description.
Male (holotype): Total length 6.11. Carapace 3.52 long, 2.91 wide. Abdomen 2.61 long, 2.34 wide. Eye sizes and interdistances: AME 0.17, ALE 0.20, PME 0.18, PLE 0.19, AME – AME 0.12, AME – ALE 0.13, PME – PME 0.15, PME – PLE 0.18. Leg measurements: I: 22.11 (6.15, 7.24, 5.90, 2.82); II: 18.40 (5.13, 6.22, 4.87, 2.18); III: 12.37 (3.91, 3.97, 3.53, 0.96); IV: 15.96 (4.87, 5.45, 4.49, 1.15). Habitus as in Fig. 3 E. Carapace yellowish with black lateral margins; thoracic fovea and radial grooves distinct; sternum brownish. Cheliceral stridulatory striae present. Abdomen black with yellowish transverse chevrons. Legs brownish with black annulations. Palp (Fig. 2 A – C): patella short, almost as long as tibial; tibia short, ca. 1 / 2 of cymbial length, with several macrosetae and dorsal process; cymbium length / width: 0.91 / 1.07; paracymbium (P) short, ca. 1 / 4 of cymbial length, finger-shaped; pimoid cymbial sclerite (PCS) U-shaped, ca. 1 / 3 of cymbial length; cymbial denticulate process (CDP) broad and curved distally, with more than 20 cuspules; median apophysis (MA) slender (length / width ratio: ca. 15); conductor (C) indistinct; pimoid embolic process (PEP) longer than embolus; embolus (E) beginning at 3: 00 o’clock position and terminates at 2: 00 o’clock; embolic tooth absent.
Female (paratype): Total length 10.78. Carapace 3.60 long, 2.92 wide. Abdomen 7.21 long, 5.58 wide. Eye sizes and interdistances: AME 0.18, ALE 0.20, PME 0.20, PLE 0.19, AME – AME 0.17, AME – ALE 0.15, PME – PME 0.16, PME – PLE 0.15. Leg measurements: I: 19.82 (5.51, 6.86, 4.94, 2.51); II: 16.47 (4.74, 5.58, 4.23, 1.92); III: 12.69 (3.65, 4.55, 3.08, 1.41); IV: 15.57 (4.74, 5.19, 3.97, 1.67). Habitus as in Fig. 3 F, G. Carapace yellowish with black lateral margins; thoracic fovea and radial grooves distinct; sternum brownish. Cheliceral stridulatory striae vestigial. Abdomen black with yellowish transverse chevrons. Legs brownish with black annulations.
Epigyne (Fig. 3 A – D): trapezoidal; ventral plate (VP) broad (length subequal to width); dorsal plate (DP) tongue-shaped; copulatory openings (COs) distinct; spermathecae (S) nearly bean-shaped, separated by ca. 1 / 3 their width; fertilization ducts (FDs) yellowish, laterally oriented.
Distribution.
Known only from the type locality, Sichuan, China (Fig. 1).
description: Published as part of Wang, Bing, Meng, Qingzhen, Yao, Zhiyuan & Zhang, Xiaoqing, 2025, Notes on three closely related species of the genus Pimoa (Araneae, Pimoidae) from Southwest China, pp. 119-126 in Zoosystematics and Evolution 101 (1) on pages 119-126, DOI: 10.3897/zse.101.142129