Yaginumaella moinba sp. nov.

Figs 43, 44, 47

Type material.

Holotype ♂ (TRU - JS 0815), China: • Xizang Autonomous Region, Medog County, Beibeng Township, Deergong Village, Yarlung Zangbo National Nature Reserve (29°10.84'N, 95°8.67'E, ca 1670 m), 25. V. 2024, X. Q. Mi et al. leg . Paratypes • 2 ♂ 1 ♀ (TRU - JS 0816–0818), same data as for holotype .

Etymology.

The specific name is after the Mionba ethnic group, one of the two significant national minorities in Medog; noun in apposition.

Diagnosis.

The male of Yaginumaella moinba sp. nov. resembles that of Y. curvata Li, Liu & Peng, 2024 in the general shape of palpal structure, but can be distinguished by the following: 1) embolus arising at ca 8: 30 o’clock position (Fig. 43 A, B) vs ca 6: 30 o’clock position (Li et al. 2024: fig. 4 A); 2) retrolateral tibial apophysis (RTA) apically directed towards ca 12: 30 o’clock position in retrolateral view (Fig. 43 C) vs ca 1: 30 o’clock (Li et al. 2024: fig. 4 B). The female of this species resembles that of Y. pingbian sp. nov. in having anterolaterally located, bell-shaped epigynal hood (H), but can be easily distinguished by the copulatory ducts, which are extending into an approximate S-shape (Fig. 44 B – D) vs extending into approximate L-shape at beginning (Fig. 46 B).

Description.

Male (Figs 43, 44E, F, H, I). Total length 3.94. Carapace 1.94 long, 1.54 wide. Abdomen 2.00 long, 1.23 wide. Eye sizes and interdistances: AME 0.46, ALE 0.24, PLE 0.20, AERW 1.36, PERW 1.29, EFL 0.89. Legs: I 4.18 (1.20, 0.68, 1.10, 0.70, 0.50), II 3.86 (1.20, 0.63, 0.95, 0.63, 0.45), III 4.39 (1.28, 0.63, 1.03, 0.95, 0.50), IV 4.59 (1.28, 0.55, 1.13, 1.13, 0.50). Carapace pale yellow except baso-lateral part of face and area behind AMEs brown. Legs pale yellow, with dark brown patches on femora I, and three and two pairs of ventral spines on tibiae and metatarsi I. Dorsum of abdomen with irregular green-brown patches and sliver spots; venter grey centrally and covered with dense sliver spots laterally.

Palp (Fig. 43 A – C): femur length / width ratio ca 3.5; patella ~ 1.45 × longer than tibia; tibia ~ 1.3 × longer than wide in retrolateral view, with tapered retrolateral apophysis (RTA) shorter than tibia, slightly curved medially and pointed apically; cymbium ~ 1.5 × longer than wide in ventral view; tegulum almost oval, slightly swollen medio-posteriorly, with tapered, somewhat curved posterior lobe (PL); embolus (E) originating at ca 8: 30 o’clock position, curved clockwise along the tegulum at anterior half, and terminating at ca 1 o’clock position.

Female (Fig. 44 A – D, G). Total length 4.63. Carapace 1.77 long, 1.40 wide. Abdomen 2.80 long, 1.97 wide. Eye sizes and interdistances: AME 0.47, ALE 0.23, PLE 0.20, AERW 1.30, PERW 1.25, EFL 0.90. Legs: I 3.23 (0.90, 0.65, 0.75, 0.50, 0.43), II 3.07 (0.88, 0.60, 0.68, 0.48, 0.43), III 3.66 (1.08, 0.60, 0.75, 0.75, 0.48), IV 3.86 (1.13, 0.55, 0.85, 0.85, 0.48). Habitus (Fig. 44 G) similar to that of male except dorsum of abdomen brown.

Epigyne (Fig. 44 A – D) ~ 1.3 × wider than long, with pair of anterior hoods (H) lateral to transversely oval atrium (At) and copulatory openings (CO); copulatory ducts (CD) curved into ca S-shape; spermathecae (S) oval, separated from each other by ~ 1 / 4 of their width.

Distribution.

Known only from the type locality in Xizang, China (Fig. 47).