Yaginumaella xiaoqingi C. Wang, Mi & Li, 2025

Wang, Cheng, Wang, Ying, Mi, Xiaoqi & Li, Shuqiang, 2025, Description of two new genera and seven new species of Plexippina Simon, 1901 (Araneae, Salticidae, Plexippini) from Southwest China, with a review of Yaginumaella Prószyński, 1979, ZooKeys 1257, pp. 215-247 : 215-247

Yaginumaella xiaoqingi C. Wang, Mi & Li sp. nov.

Figs 15 , 16

Type material.

Holotype • ♂ ( IZCAS -Ar 45889 ), China: Guizhou: Weining Yi, Hui and Miao Autonomous County, Guanfenghai Township, Shazipo Village ( 26°55.68'N, 103°58.29'E, ca 2,250 m), 1. vi. 2024, X. Q. Zhang, Y. Wang, and Q. Z. Meng leg. Paratypes • 2 ♀ ( IZCAS -Ar 45890 –45891), same data as for holotype ; • 1 ♂ 1 ♀ ( IZCAS -Ar 45892 –45893), Shuijinbaobao Village ( 26°53.52'N, 104°5.72'E, ca 2,530 m), same data and collectors as holotype .

Diagnosis.

Yaginumaella xiaoqingi sp. nov. closely resembles Y. erlang Wang, Mi & Li, 2024 in having very similar copulatory organs, but can be distinguished by the following: 1) the retrolateral tibial apophysis has blunt tip in retrolateral view (Fig. 15 B ) vs pointed in Y. erlang ( Wang et al. 2024 a: fig. 20 C); 2) the posterior tegular lobe extends postero-retrolaterally (Fig. 15 C ) vs posteriorly in Y. erlang ( Wang et al. 2024 a: fig. 20 B); 3) the atrium is inverted trapeziform (Fig. 16 A ) vs trapeziform in Y. erlang ( Wang et al. 2024 a: fig. 21 A).

Description.

Male (Figs 15 A – D , 16 C, D, F, G ). Total length 4.15. Cephalothorax 2.05 long, 1.49 wide. Abdomen 2.23 long, 1.51 wide. Eye sizes and inter distances: AME 0.38, ALE 0.23, PLE 0.21, AERW 1.24, PERW 1.21, EFL 0.77. Legs: I 3.96 (1.18, 0.70, 0.93, 0.70, 0.45), II 3.49 (1.05, 0.65, 0.78, 0.58, 0.43), III 3.80 (1.20, 0.60, 0.75, 0.80, 0.45), IV 4.18 (1.25, 0.58, 0.90, 0.95, 0.50). Carapace yellow-brown to brown, covered with dense pale yellow and sparse dark setae, with longitudinal, central pale yellow stripe extending from posterior portion of eye field to posterior end; fovea linear. Chelicerae yellow, bearing long dark setae on anterior surface, with type dentition. Endites pale yellow, with pale disto-inner portions and dense disto-inner marginal setae. Labium almost as color as endites. Sternum pale yellow, almost shield-shaped. Legs pale to yellow-brown, spiny. Dorsum of abdomen covered with lateral dark and pale setae, with central, irregular pale yellow patch and two pairs of muscle depressions; venter mainly pale, with dark dots.

Palp (Fig. 15 A – D ): tibia slightly wider than long in retrolateral view; retrolateral tibial apophysis strongly sclerotized, tapered, ca 1.5 × longer than tibia, slightly curved medially and with blunt tip; cymbium somewhat longer than wide; tegulum almost oval, swollen medio-posteriorly, with posterior lobe extending retrolatero-posteriorly; embolus originates from ca 8 o′clock position, tapered, curved ~ 1 / 4 circle and with rather pointed tip.

Female (Fig. 16 A, B, E ). Total length 4.36. Cephalothorax 2.11 long, 1.67 wide. Abdomen 2.36 long, 1.61 wide. Eye sizes and inter distances: AME 0.40, ALE 0.26, PLE 0.23, AERW 1.36, PERW 1.33, EFL 0.89. Legs: I 3.75 (1.15, 0.70, 0.85, 0.60, 0.45), II 3.46 (1.10, 0.65, 0.78, 0.50, 0.43), III 3.94 (1.20, 0.63, 0.80, 0.83, 0.48), IV 4.57 (1.38, 0.63, 1.00, 1.05, 0.51). Habitus (Fig. 16 E ) similar to that of male except darker.

Epigyne (Fig. 16 A, B ): almost as long as wide, with pair of sub-triangular anterolateral hoods lateral to anterior portion of atrium; atrium anteriorly located, inverted trapeziform; copulatory openings slit-shaped; copulatory ducts curved into C-shapes at origin and followed by complicated coils; spermathecae without distinct border; fertilization ducts transversely extending.

Distribution.

Known only from the type locality in Guizhou, China (Fig. 2 ).

Etymology.

The specific name refers to Dr Xiaoqing Zhang, one of the collectors; noun (name) in genitive case.

Figures

Figure 2. Geographical records of the new species.

Figure 15. Male palp of Yaginumaella xiaoqingi sp. nov., holotype (IZCAS - Ar 45889). A. Prolateral; B. Retrolateral; C. Ventral; D. Dorsal. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, PL = posterior tegular lobe, SD = sperm duct. Scale bars: 0.1 mm.

Figure 16. Yaginumaella xiaoqingi sp. nov., male holotype (IZCAS - Ar 45889) (C, D, F, G) and female paratype (IZCAS - Ar 45890) (A, B, E). A. Epigyne, ventral; B. Vulva, dorsal; C, E. Habitus, dorsal; D. Ditto, ventral; F. Carapace, frontal; G. Chelicera, posterior. Abbreviations: At = atrium, CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C – F).