Altimella nedong Wang & Zhang sp. nov.

Figs 1, 2, 3, 6 乃东高朗蛛

Type material.

Holotype ♂ (SWUC -T-CI-08-01), China, Xizang, Shannan City, Nedong District, Zedang Town, 29 ° 13 ' 56 ′′ N, 91 ° 46 ' 36 ′′ E, elev. 3616 m, 25. 08. 2002, M. S. Zhu leg. (SWUC) . Paratypes: 6 ♀ (SWUC -T-CI-08-02 to 07) with same data as for holotype (SWUC) • 2 ♀ (SWUC -T-CI-08-08 to 09), Zedang Town, 21. 08. 2002, F. X. Liu leg.

Etymology.

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

Diagnosis.

The new species differs from those of A. ngamring Wang & Zhang, sp. nov. (Figs 4, 5) by the ventral tibial apophysis as long as tibia (Figs 2 A – C, 3 C, D; vs short and with claw-like tip); posterior part of conductor (Cc) bifurcated (Figs 2 B, 3 D; vs pocket-like); copulatory openings located in anterior half of epigyne (Figs 2 D, 3 F, vs near epigastral fold); spermathecae convoluted (Figs 2 E, 3 G, vs kidney-shaped).

Description.

Male holotype (Fig. 3 A) total length 3.55. Carapace 1.69 long, 1.33 wide; opisthosoma 1.92 long, 1.10 wide. Eye sizes and interdistances: AME 0.06, ALE 0.14, PME 0.10, PLE, 0.11; AME – AME 0.05, AME – ALE 0.03, PME – PME 0.12, PME – PLE 0.08, ALE – PLE 0.03. MOA 0.24 long, anterior width 0.19, posterior width 0.31. Clypeus height 0.19. Chelicerae with three promarginal and four retromarginal teeth. Leg measurements: I 7.32 (2.06, 2.64, 1.62, 1.00); II 5.69 (1.68, 1.97, 1.27, 0.77); III 4.80 (1.38, 1.53, 1.18, 0.71); IV 6.14 (1.74, 2.06, 1.54, 0.80). Leg I longer than leg IV.

Palp (Figs 2 A – C, 3 C, D). Patella as long as tibia. Tibia: ventral tibial apophysis (TA) originates from base of tibia, longer than tibia, distal half partially grooved and bent posteriorly; retrolateral apophysis (RTA) as long as cymbium, almost six times longer than maximal width. Posterior arm of conductor (CP) claw-like, anterior arm (CA) membranous and groove-like. Embolus long filiform, with a broad base, originating at 6 o’clock position, anterior part resting in long groove of conductor.

Female (paratype, Fig. 3 B, SWUC - T-CI- 08-02) total length 4.79. Carapace 1.74 long, 1.32 wide; opisthosoma 3.32 long, 2.41 wide. Eye sizes and interdistances: AME 0.08, ALE 0.13, PME 0.10, PLE, 0.12; AME – AME 0.05, AME – ALE 0.03, PME – PME 0.08, PME – PLE 0.03, ALE – PLE 0.04. MOA 0.29 long, anterior width 0.20, posterior width 0.34. Clypeus height 0.15. Chelicerae with three promarginal and four retromarginal teeth. Leg measurements: I 5.86 (1.75, 2.05, 1.26, 0.80); II 5.00 (1.47, 1.72, 1.09, 0.72); III 4.39 (1.27, 1.39, 1.06, 0.67); IV 5.74 (1.59, 1.97, 1.45, 0.73).

Epigyne (Figs 2 D – E, 3 F – G). Epigynal plate 1.5 times wider than long. Copulatory openings located in anterior hood (Ah). Copulatory ducts long and complexly winding. Spermathecae convoluted.

Variation.

Females (n = 8): total length 3.60–5.19.

Distribution.

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