Meta tibet Wang & Irfan & Chen & Zhang 2022, sp. nov.
Creators: name: Wang, Lu-Yu
name: Irfan, Muhammad
name: Chen, Hui-Ming
name: Zhang, Zhi-Sheng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Tetragnathidae
Meta
Meta tibet

description: Meta tibet sp. nov.
urn:lsid:zoobank.org:act: BD6EDAAA-FAF4-4420-990A-6F7BA3B68EFD
Figs 1H–I, 13–15, 22
Differential diagnosis
The male of this new species resembles M. bowo sp. nov. (Figs 2–4) and M. cona sp. nov. (Figs 5–7), in having the similar abruptly thin embolus and conductor of male palp, but can be distinguished from both species by the following characters: cymbial ectobasal process V-shaped and distal end of metaine embolic apophysis oval in M. tibet sp. nov. (Figs 13B–C, 14B–D). The female of M. tibet sp. nov. can be distinguished from all other congeners by the spermathecae globular, situated anteriorly (Figs 13D–E, 15A–B).
Etymology
The epithet refers to the type locality.
Type material
Holotype CHINA • ♂; Tibet, Gyirong County, Gyirong Town, near Kaire waterfall; 28°29′2.68″ N, 85°13′25.45″ E; alt. 3143 m; 1 Aug. 2020; L.Y. Wang, T. Yuan, P. Liu and Y.M. Hou leg.; SWUC-T-TEg-06-01. Paratypes CHINA • 3 ♂♂; same collection data as for holotype; SWUC-T-TEg-06-02–04 • 5 ♀♀; same collection data as for preceding; SWUC-T-TEg-06-05–09 • 1 ♂; Gyirong County, Gyirong Town, Riwubanba; 28°28.317′ N, 85°13.735′ E; alt. 3233 m; 15 Jul. 2018; L.Y. Wang, Z.S. Wu and Y.N. Mu leg.; SWUC- T-TEg-06-10.
Description
Male (holotype, Fig. 1H)
MEASUREMENTS. Total length 9.32. Prosoma 4.18 long, 3.42 wide; opisthosoma 5.50 long, 3.43 wide. Eye sizes and interdistances: AME 0.21, ALE 0.23, PME 0.26, PLE 0.23; AME–AME 0.18, AME– ALE 0.29, PME–PME 0.19, PME–PLE 0.29, ALE–PLE 0.07. MOA 0.70 long, front width 0.65, back width 0.69. Clypeus height 0.29.
CHELICERAE. Strong, with 3 promarginal and 4 retromarginal teeth.
LEG MEASUREMENTS. I = 28.68 (7.07, 9.69, 8.69, 3.23); II = 21.24 (5.53, 7.63, 5.79, 2.29); III = 12.45 (3.78, 4.09, 3.10, 1.48); IV = 16.59 (5.18, 5.46, 4.38, 1.57). Leg formula: 1243.
OPISTHOSOMA. Oval, with two pairs of sigillae. Both dorsum and venter brown, with white and black markings.
PALP (Figs 13A–B, 14A–E). Cymbial ectobasal process simple, V-shaped with sharp tooth and pointed end. Paracymbium finger-like, narrow towards tip, with sparse long hairs. Metaine embolic apophysis with distal end oval, extending forward.
EMBOLUS. Short, abruptly thin with fine tip. Conductor strong, arc-shaped, arising meso-retrolaterally from bulb and extending clockwise, longer than wide, with membranous end.
Female (paratype SWUC-T-TEg-06-05, Fig. 1I)
MEASUREMENTS. Total length 10.05. Prosoma 4.48 long, 3.41 wide; opisthosoma 5.50 long, 4.28 wide. Eye sizes and interdistances: AME 0.23, ALE 0.26, PME 0.25, PLE 0.24; AME–AME 0.19, AME– ALE 0.30, PME–PME 0.19, PME–PLE 0.34, ALE–PLE 0.07. MOA 0.72 long, front width 0.65, back width 0.71. Clypeus height 0.35.
LEG MEASUREMENTS. I = 21.78 (5.78, 7.67, 5.94, 2.39); II = 16.88 (4.76, 5.71, 4.52, 1.89); III = 10.41 (3.22, 3.38, 2.55, 1.26); IV = 14.03 (4.32, 4.69, 3.73, 1.29). Leg formula: 1243. Other morphological characteristics same as in male.
EPIGYNE (Figs 13D–E, 15A–B). Posterior margin of epigynal plate with inconspicuous sclerotized depression.
VULVA. Spermathecae globular, situated anteriorly. Fertilization ducts thick, S-shaped.
Distribution
China, Tibet (Gyirong) (Fig. 22).
description: Published as part of Wang, Lu-Yu, Irfan, Muhammad, Chen, Hui-Ming & Zhang, Zhi-Sheng, 2022, Seven new species of Meta C. L. Koch, 1836 (Araneae, Tetragnathidae) from Southwest China, pp. 117-147 in European Journal of Taxonomy 834 on pages 134-138, DOI: 10.5852/ejt.2022.834.1905, http://zenodo.org/record/7017596