Yaginumaella qomolangma Wang & Mi, 2025

Wang, Cheng & Mi, Xiaoqi, 2025, Four new species of jumping spiders from Qomolangma National Nature Reserve, Xizang, China (Araneae: Salticidae), Zootaxa 5719 (2), pp. 228-242 : 235-236

Yaginumaella qomolangma Wang & Mi , sp. nov.

Figures 5A–C , 6A–H

Type material. Holotype: ♂ ( TRU-JS 0865 ), CHINA: Xizang Autonomous Region: Tingri County, Rongxia Township , Zuobude Village ( 28°01.72'N, 86°16.50'E, 2990 m a.s.l.), 24.V.2025, leg. C. Wang et al.

Paratypes: 5♂ 21♀ ( TRU-JS 0866–0891 ), same data as for holotype . 2♂ 6♀ ( TRU-JS 0892–0899 ), Nyalam County, Zhangmu Township , Zhangmu Village ( 27°59.53'N, 85°59.71'E, 2320 m a.s.l.), 21.V.2025, leg. X.Q. Mi et al .; 5♂ 5♀ ( TRU-JS 0900–0909 ), Gyirong County, Gyirong Township ( 28°22.87'N, 85°19.60'E, 2780 m a.s.l.), 23.V.2025, leg. X.Q. Mi et al .

Etymology. The specific name is after the type locality, Qomolangma National Nature Reserve; noun in apposition.

Diagnosis. The male of Yaginumaella qomolangma sp. nov. resembles that of Y. pingbian Wang, Mi, Li & Xu, 2024 in the general shape of palp, especially the origin of the embolus, but differs in the following aspects: (1) the embolus is just curved at the basal 2/5, and directed towards about 01:30 position at the distal end ( Fig. 5B ) vs entirely curved and directed towards about 02:30 position in Y. pingbian ( Wang et al. 2024: fig. 45B); and (2) by the presence of yellow and pale scales on the dorsum of the palpal patella, tibia and cymbium ( Figs 5A, C , 6F, G ), which are absent in Y. pingbian ( Wang et al. 2024: fig. 46E, F). The male of this new species also resembles that of Y. luoi sp. nov. in the general shape of the palp but differs in: (1) the embolus originates at about 08:30 position and with the distal half straight ( Fig. 5A ) vs originates at about 06:30 position and with only the distal 1/5 straight in Y. luoi ( Fig. 3A ); (2) the retrolateral tibial apophysis in ventral view is sharply pointed and the tip is directed towards about 12 o’clock position ( Fig. 5C ) vs rather blunt and directed towards about 01:30 position in Y. luoi ( Fig. 3C ); and (3) the posterior tegular lobe extends towards about 04:30 position in retrolateral view ( Fig. 5C ) vs about 06:00 position in Y. luoi ( Fig. 3C ). The female of this new species can be easily distinguished by the posteriorly located epigynal hoods ( Fig. 6A, B ) vs anteriorly or medially located epigynal hoods in other congeners (see drawings on Metzner 2025).

Description. Male ( holotype, Figs 5A–C , 6D, F–H ). Total length 4.83. Carapace 2.43 long, 1.88 wide.Abdomen 2.58 long, 1.65 wide. Eye sizes and interdistances: AME 0.45, ALE 0.28, PLE 0.24, AERW 1.55, PERW 1.50, EFL 1.03. Legs: I 5.69 (1.70, 0.93, 1.38, 1.05, 0.63), II 4.32 (1.33, 0.78, 0.93, 0.75, 0.53), III 5.10 (1.55, 0.95, 1.00, 1.05, 0.55), IV 5.33 (1.55, 0.75, 1.18, 1.30, 0.55). Carapace mainly red brown, covered with scales varying in color, with pair of lateromarginal white bands formed by scales; fovea dark red, linear. Chelicerae with typical dentition. Endites dark yellow, widened distally, with pale disto-inner areas and dense dark disto-inner marginal setae. Labium dark brown. Sternum brown except yellow centrally, about 1.3 times longer than wide, with straight anterior edge. Legs spiny, covered with yellow and golden scales on femora I, II, III, patellae I, II, tibiae I, II, III. Dorsum of abdomen grey-brown, with central, sub-fusiform stripe extending across whole surface and pair of transverse white patches posteriorly; venter paler than dorsum, with dark brown patches.

Palp ( Fig. 5A–C ): tibia about as long as wide, with yellow dorsal scales; retrolateral tibial apophysis strongly sclerotized, curved distally and with pointed tip directed antero-dorsad; cymbium ca. 1.25 times longer than wide, covered with yellow and white dorsal scales, with truncated anterior edge; tegulum swollen posteriorly, with subtriangular posterior lobe extending postero-prolaterally; embolus tapered, originating at ca. 08:30 position, widened and curved in basal 2/5, then extending antero-retrolaterally to pointed tip.

Female (TRU-JS 0871, Fig. 6A–C, E ). Total length 5.22. Carapace 2.31 long, 1.81 wide. Abdomen 3.00 long, 2.00 wide. Eye sizes and interdistances: AME 0.48, ALE 0.28, PLE 0.24, AERW 1.53, PERW 1.47, EFL 1.00. Legs: I 4.31 (1.28, 0.75, 0.90, 0.93, 0.45), II 3.93 (1.25, 0.75, 0.85, 0.63, 0.45), III 4.73 (1.50, 0.75, 1.00, 0.98, 0.50), IV 5.14 (1.55, 0.73, 1.13, 1.20, 0.53). Habitus ( Fig. 6E ) similar to that of male, except with stripe on carapace extending from anterior-most level of PLEs to terminus and abdominal dorsum darker in color.

Epigyne ( Fig. 6A–C ): slightly wider than long, with pair of subtriangular posterolateral hoods far away from each other, about equal to distance between copulatory openings; copulatory openings slit-shaped, anteromedially located, about 1/3 epigynal length; copulatory ducts flat and posteriorly extending at anterior half, then curved towards epigynal center until touching each other; spermathecae without distinct borders; fertilization ducts arising at anterior-most portions of spermathecae.

Distribution. Known only from the type locality in Xizang, China ( Fig. 9 ).

Figures

FIGURE 3. Male palp of Yaginumaella luoi sp. nov., holotype (TRU-JS 0857). A prolateral B ventral C retrolateral. Scale bars: 0.1 mm.

FIGURE 5. Male palp of Yaginumaella qomolangma sp. nov., holotype (TRU-JS 0865). A prolateral B ventral C retrolateral. Scale bars: 0.1 mm.

FIGURE 6. Yaginumaella qomolangma sp. nov., D, F–H male holotype (TRU-JS 0865) and A–C, E female paratype (TRU-JS 0871). A, B epigyne, ventral C ditto, dorsal D, E habitus, dorsal F ditto, ventral G carapace, frontal H left chelicera, posterior. Scale bars: 0.1 mm (A–C, H); 0.5 mm (D–G).

FIGURE 9. Distribution records of the new species.