Hamataliwa qomolangma Wang & Mi sp. nov.
Figs 2, 4, 6 C, D, 8, 10
Type material.
Holotype: China • ♂ (TRU -Oxy-0017); Xizang Auton. Region, Rikaze City, Dingjie Co., Chentang Twp., Natang Vill., Qomolangma NNR (27°50.28'N, 87°26.28'E, ca 2390 m), 27 May 2025, C. Wang et al. leg. Paratypes: • 6 ♂ 8 ♀ (TRU -Oxy-0018 –0031), same data as for holotype; • 2 ♀ (TRU -Oxy-0032 –0033), Dingjie Co., Chentang Twp., Chentanggou, Qomolangma NNR (27°51.78'N, 87°25.65'E, ca 2370 m), 18 August 2024, C. Wang et al. leg.; • 1 ♂ 1 ♀ (TRU -Oxy-0034 –0035), Jilong Co., Sare Twp., Labi Vill. Qomolangma NNR (28°18.99'N, 85°24.99'E, ca 2530 m), 25 May 2025, X. Q. Mi et al. leg.
Etymology.
The specific epithet is a noun in apposition referring to the Qomolangma National Nature Reserve, the type locality.
Diagnosis.
The new species is similar to H. cucullata Tang, Wang & Peng, 2012 in the general shape of copulatory organs, especially the form of ventral tibial apophysis (VTA), epigynal hood (H), copulatory ducts (CD) and spermathecae (S), but can be easily distinguished by the following: (1) ventral tibial apophysis (VTA) is about half the tibial length in retrolateral view (Fig. 4 B) vs about as long as tibia (Tang et al. 2012: figs 6, 13); (2) the posterior ramus of the retrolateral tibial apophysis (pRTA) is directed towards dorsal side in retrolateral view (Fig. 4 B) vs retrolateral side (Tang et al. 2012: figs 6, 13); (3) epigynal hood (H) is partly extending beyond the base of septum and is wider than septum (Fig. 8 A, C, D) vs not extending beyond the base of septum and about 2 / 3 the septum width (Tang et al. 2012: figs 8, 10, 14); and (4) atrium (At) is almost trapezoidal (Fig. 8) vs almost oval (Tang et al. 2012: figs 8, 10, 14).
Description.
Male (holotype, Figs 2 A, 2 B, 4; paratype, TRU -Oxy-0018, Fig. 6 C, D). Total length 3.41. Carapace 1.79 long, 1.38 wide. Abdomen 1.62 long, 1.15 wide. Eye sizes and interdistances: AME 0.06, ALE 0.12, PME 0.09, PLE 0.18, AME – AME 0.09, AME – ALE 0.06, ALE – PLE 0.24, PME – PLE 0.24, PME – PME 0.21. Legs: I 5.55 (1.49, 0.53, 1.47, 1.33, 0.73); II 5.02 (1.50, 0.48, 1.33, 1.28, 0.43); III 4.11 (1.29, 0.23, 1.03, 0.93, 0.63); IV 3.91 (1.05, 0.39, 0.90, 1.02, 0.55). Carapace oval, red-brown, with median, longitudinal, yellow stripe, eye region dark, margin covered with dense grey setae. Chelicerae dark brown in general. Endites yellow, covered with short setae. Labium dark brown, with pale anterior edges. Sternum red-brown. Legs slender, pale yellow, spination of leg I: femur d 1 p 3; patella d 1 r 1; tibia d 2 p 4 r 4; metatarsi d 2 p 5 r 5. Abdomen long, elliptical, dorsum dark brown, setose, with center, longitudinal, fusiform dark patch; venter darker than dorsum, with broad, dark brown band extending across whole surface, covered with short setae.
Palp (Figs 4, 6 C, D) femur length / width ratio ca 1.4; patella almost as long as wide; ventral tibial apophysis (VTA) about half of tibial length, slightly curved and with blunt end in retrolateral view; retrolateral tibial apophysis (RTA) with half round anterior ramus (aRTA) and sub-triangular posterior ramus (pRTA) in ventral view; cymbium length / width ratio ca 1.4, with baso-retrolateral fold (CF); tegulum with prolaterally extended posterior lobe (PL); median apophysis (MA) postero-prolateral to conductor (C), divided into dorsal sheet-shaped ramus and near bar-shaped ventral ramus curved slightly; embolus (E) tapered, curved clockwise, distally covered by conductor; conductor (C) almost transversely extended, with anterior curly margin, hollowed medially.
Female (paratypes, TRU -Oxy-0024, Figs 2 C, 8 A, 8 B, and TRU -Oxy-0025, Fig. 8 C, D). Total length 4.21. Carapace 2.04 long, 1.57 wide. Abdomen 2.18 long, 1.75 wide. Eye sizes and interdistances: AME 0.08, ALE 0.11, PME 0.11, PLE 0.11, AME – AME 0.08, AME – ALE 0.06, ALE – PLE 0.19, PME – PLE 0.22, PME – PME 0.15. Legs: I 6.46 (1.86, 0.65, 1.73, 1.42, 0.80); II 6.17 (1.81, 0.63, 1.60, 1.33, 0.80); III 5.71 (1.68, 0.60, 1.62, 1.08, 0.73); IV 4.73 (1.40, 0.55, 1.08, 1.15, 0.55). Habitus (Fig. 2 C) similar to that of male except paler in color. Spination of leg I: femur d 3 p 1 r 2; patella d 1 r 1; tibia d 2 p 4 r 4; metatarsi d 2 p 5 r 5.
Epigyne (Fig. 8): ~ 1.2 × longer than wide, with oval, posterior hood (H) hollowed centrally; atrium (At) almost trapezoidal, with longitudinal septum (Sp) about 2 / 5 atrium length; copulatory openings (CO) open posterolaterally; copulatory ducts (CD) short, curved about 90 ° medially; spermathecae (S) almost globular.
Distribution.
China (Xizang, Fig. 10).
Publication Date: 2026-06-23