Altimella ngamring Wang & Zhang sp. nov.

Figs 4, 5, 6 昂仁高朗蛛

Type material.

Holotype ♂ (SWUC -T-CI-09-01), China, Xizang, Shigatse City, Ngamring County, Kaga Town, Nanma Village, 29 ° 12 ' 41 ′′ N, 87 ° 19 ' 42 ′′ E, elev. 4265 m, 21. 07. 2020, L. Y. Wang et al. leg. Paratypes: 3 ♀ (SWUC -T-CI-09-02 to 04) with same data as for holotype (SWUC).

Etymology.

The specific name is derived from the type locality; a noun in apposition.

Diagnosis.

The new species differs from A. nedong Wang & Zhang, sp. nov. (Figs 2, 3) by the short ventral tibial apophysis, shorter than tibia width (Figs 4 B, C, 5 D, E; vs longer than tibia, tip with groove); the posterior part of conductor pocket-like (Figs 4 B, 5 D; vs claw-like); copulatory openings located posteriorly in a joint fovea and not hidden by hood (Figs 4 D, 5 F; vs located anteriorly and hidden by hood); spermathecae kidney-shaped (Figs 4 F, 5 G; vs convoluted).

Description.

Male holotype (Fig. 5 A) total length 2.30. Carapace 1.09 long, 0.88 wide; opisthosoma 1.26 long, 0.88 wide. Eye sizes and interdistances: AME 0.05, ALE 0.08, PME 0.06, PLE, 0.08; AME – AME 0.03, AME – ALE 0.01, PME – PME 0.06, PME – PLE 0.05, ALE – PLE 0.02. MOA 0.16 long, anterior width 0.12, posterior width 0.18. Clypeus height 0.11. Chelicerae with three promarginal and three retromarginal teeth. Leg measurements: I 3.21 (0.90, 1.07, 0.70, 0.54); II 2.87 (0.84, 0.98, 0.60, 0.45); III 2.54 (0.73, 0.81, 0.56, 0.44); IV 3.24 (0.93, 1.01, 0.87, 0.43).

Palp (Figs 4 A – C, 5 C, D). Tibia longer than patella. Ventral tibial apophysis (TA) shorter than the tibia, with hook-like tip; retrolateral apophysis (RTA) large and as long as cymbium with single fold; posterior arm of conductor (CP) pocket-like, lamelliform with sharp tip, anterior arm of conductor (CA) unobvious; embolus long, filiform, with a broad base, originating at 6 o’clock position, anterior part resting in the long groove of conductor.

Female (paratype, Fig. 5 B, SWUC - T-CI- 09-02) total length 2.96. Carapace 1.08 long, 0.85 wide; opisthosoma 1.87 long, 1.32 wide. Eye sizes and interdistances: AME 0.05, ALE 0.09, PME 0.06, PLE, 0.08; AME – AME 0.04, AME – ALE 0.02, PME – PME 0.05, PME – PLE 0.06, ALE – PLE 0.03. MOA 0.16 long, anterior width 0.15, posterior width 0.19. Clypeus height 0.08. Chelicerae with three promarginal and three retromarginal teeth. Leg measurements: I 2.88 (0.79, 1.05, 0.61, 0.43); II 2.59 (0.72, 0.87, 0.54, 0.46); III 2.33 (0.68, 0.65, 0.55, 0.45); IV 3.19 (0.93, 1.07, 0.75, 0.44).

Epigyne (Figs 4 D, E, 5 F, G). Epigynal plate longer than wide. Copulatory openings located posteriorly in a wide fovea. Copulatory ducts long, C-shaped in dorsal view, together forming an X-shape. Spermathecae kidney-shaped. Fertilization ducts hook-like.

Variation.

Females (n = 3): total length 2.70–2.96.

Distribution.

Known only from the type locality, Xizang, China (Fig. 6).