Hamataliwa jinlini Wang & Mi sp. nov.
Figs 1 A – C, 3, 6 A, 6 B, 7, 10
Type material.
Holotype: China • ♂ (TRU -Oxy-0001); Xizang Auton. Region, Linzhi City, Bomi Co., Gu Twp., Qiaona Vill., Yarlung Zangbu Grand Canyon NNR (30°1.96'N, 95°14.12'E, ca 2450 m), 20 May 2024, X. Q. Mi et al. leg. Paratypes: • 2 ♂ 3 ♀ (TRU -Oxy-0002 –0006), same data as for holotype; • 1 ♀ (TRU -Oxy-0007), Motuo Co., Paimo Hwy, Yarlung Zangbu Grand Canyon NNR (29°28.10'N, 94°59.44'E, ca 3210 m), 23 May 2024, X. Q. Mi et al. leg.; • 2 ♀ (TRU -Oxy-0008 –0009), Motuo Co., Renqingbengsi, Yarlung Zangbu Grand Canyon NNR (29°18.31'N, 95°21.29'E, ca 1970 m), 26 May 2024, X. Q. Mi et al. leg.; • 2 ♀ (TRU -Oxy-0010 –0011), Motuo Co., Damu Twp., Zhu Vill., Yarlung Zangbu Grand Canyon NNR (29°29.73'N, 95°25.86'E, ca 1740 m), 27 May 2024, X. Q. Mi et al. leg.
Etymology.
The specific name is after the late Prof. Jinlin Hu (胡金林), who made significant contributions to the taxonomic study of spiders of the Qinghai-Xizang Plateau.
Diagnosis.
The male of the new species is similar to that of H. wangi Lin & Li, 2022 in the shape of the embolus (E) and conductor (C), but can be easily distinguished by the following: (1) median apophysis (MA) is divided into two sheet-shaped lamellas distally in ventral view (Figs 3 A, 6 A) vs hook-shaped (Lin et al. 2022: fig. 30 A); and (2) the tip of the ventral tibial apophysis (VTA) is directed towards about 3: 00 o’clock position in ventral view (Fig. 3 A) vs about 1: 00 (Lin et al. 2022: fig. 30 A). The female of this new species is similar to that of H. pedicula Tang & Li, 2012 in the shape of the copulatory ducts (CD) and spermathecae (S), but can be easily distinguished by the copulatory ducts, which originate from the median portion of the epigyne (Fig. 7 B, D) vs from posterior portion of the epigyne (Tang and Li 2012: figs 13 C, 14 B) and by the posterior sclerotized edge (SE), which is almost arc-shaped (Fig. 7 A, C) vs just slightly curved (Tang and Li 2012: figs 13 B, 14 A).
Description.
Male (holotype, Figs 1 A, 1 B, 3; paratype, TRU -Oxy-0002, Fig. 6 A, B). Total length 4.60. Carapace 2.23 long, 1.67 wide. Abdomen 2.30 long, 1.40 wide. Eye sizes and interdistances: AME 0.13, ALE 0.23, PME 0.20, PLE 0.17, AME – AME 0.10, AME – ALE 0.12, ALE – PLE 0.33, PME – PLE 0.37, PME – PME 0.35. Legs: I 7.71 (2.10, 0.68, 2.05, 1.90, 0.98); II 7.18 (2.02, 0.65, 1.93, 1.75, 0.83); III 5.70 (1.70, 0.55, 1.30, 1.45, 0.70); IV 5.40 (1.48, 0.53, 1.23, 1.48, 0.68). Carapace elliptical, yellow-brown with brown stripes; eye region dark. Chelicerae dark brown in general, anterior surface with dense pale scales. Endites yellow, covered with short setae. Labium mainly dark, with dense, anteromarginal dark setae. Sternum yellow. Legs pale yellow, spination of leg I: femur d 2 p 3 r 2; patella d 1 p 1; tibia d 2 p 4 r 4; metatarsus d 3 p 4 r 4. Abdomen long, elliptical, dorsum yellow-brown, with inconspicuous pattern; venter darker than dorsum, with broad, dark brown median band extending from epigastric furrow to hind end.
Palp (Figs 3, 6 A, B): femur length / width ratio about 2.2; patella with sub-triangular antero-retrolateral apophysis (RPA) in retrolateral view; ventral tibial apophysis (VTA) weakly sclerotized, curved towards retrolateral side and with blunt tip directed towards about 3: 00 o’clock position in ventral view; retrolateral tibial apophysis (RTA) strongly sclerotized, sheet-shaped in retrolateral view; cymbium length / width ratio ca 1.4, with baso-retrolateral fold (CF); tegulum with postero-prolaterally extended posterior lobe (PL); median apophysis (MA) narrowest medially, and divided into 2 sheet-shaped lamellas distally, with sub-square base in ventral view; embolus (E) curved about half circle, tip hidden by conductor; conductor (C) anteroretrolaterally located, strongly sclerotized, tip curved to half circle.
Female (paratype, TRU -Oxy-0004, Figs 1 C, 7). Total length 4.34. Carapace 1.88 long, 1.43 wide. Abdomen 2.25 long, 1.66 wide. Eye sizes: AME 0.11, ALE 0.19, PME 0.16, PLE 0.19. Eye interdistances: AME – AME 0.13, AME – ALE 0.12, ALE – PLE 0.41, PME – PLE 0.36, PME – PME 0.41. Legs: I missing; II 5.66 (1.67, 0.46, 1.49, 1.29, 0.75); III 4.49 (1.35, 0.39, 1.06, 1.07, 0.62); IV 4.49 (1.34, 0.44, 0.96, 1.13, 0.62). Habitus (Fig. 1 C) similar to that of male except paler in color. Spination of leg I: missing.
Epigyne (Fig. 7): almost as long as wide, with medio-posterior atrium (At) and posterior, arc-shaped sclerotized edge (SE); copulatory openings (CO) beneath anterolateral portion of atrium, opened posteriorly; copulatory ducts (CD) curved to inverted C-shape; spermathecae (S) globular, about 3 / 4 their diameters apart.
Distribution.
China (Xizang, Fig. 10).
Publication Date: 2026-06-23