Meta weining 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 weining

description: Meta weining sp. nov.
urn:lsid:zoobank.org:act: B4BF84EA-2EF2-4C71-9E5C-0024D0705A84
Figs 1L–M, 19–22
Differential diagnosis
This new species resembles M. tibet sp. nov. (Figs 13–15) in having a similar embolus; V-shaped cymbial ectobasal process in male palp and epigynal plate posteriorly with small, sclerotized depression in female epigyne, but it can be differentiated by the embolus gradually narrow towards the tip in M. weining sp. nov. (Figs 19B–C, 20B–D), whereas abruptly narrow in M. tibet sp. nov. (Figs 13A–B, 14A, C, E). Metaine embolic apophysis longer than wide in ventral view in M. weining sp. nov. (Figs 19B, 20C), whereas wider than long in M. tibet sp. nov. (Figs 13B, 14C). Cymbial ectobasal process tooth present at the end of lateral arm in ventral view in M. weining sp. nov. (Figs 19B, 20C), whereas tooth present on the lateral arm in M. tibet sp. nov. (Figs 13B, 14C). Spermathecae semicircular and fertilization ducts move around the spermathecae from dorsal to the ventral side of epigyne in M. weining sp. nov. (Figs 19E, 21B), whereas spermathecae globular and fertilization ducts move around the spermathecae from ventral to the dorsal side of epigyne in M. tibet sp. nov. (Figs 13E, 15B).
Etymology
The epithet refers to the type locality.
Type material
Holotype CHINA • ♂; Guizhou, Bijie City, Weining County, Shanqiaojiedao, Dashan Village, Gaodiping Cave; 26°50′55.03″ N, 104°17′08.81″ E; alt. 2175 m; 23 Apr. 2017; H.M. Chen leg.; SWUC-T-TEg-08-01.
Paratypes CHINA • 1 ♂; same collection data as for holotype; SWUC-T-TEg-08-02 • 2 ♀♀; same collection data as for preceding; SWUC-T-TEg-08-03–04.
Description
Male (holotype, Fig. 1L)
MEASUREMENTS. Total length 7.92. Prosoma 3.54 long, 2.83 wide; opisthosoma 4.32 long, 3.00 wide. Eye sizes and interdistances: AME 0.22, ALE 0.22, PME 0.21, PLE 0.20; AME–AME 0.14, AME–
ALE 0.21, PME–PME 0.18, PME–PLE 0.29, ALE–PLE 0.05. MOA 0.58 long, front width 0.57, back width 0.61. Clypeus height 0.26.
CHELICERAE. Strong, with 3 promarginal and 4 retromarginal teeth.
LEG MEASUREMENTS. I = 18.59 (5.01, 6.53, 5.05, 2.00); II = 14.46 (4.15, 5.06, 3.75, 1.50); III = 7.74 (2.42, 2.62, 1.80, 0.90); IV = 11.03 (3.54, 3.53, 2.84, 1.12). Leg formula: 1243.
OPISTHOSOMA. Oval, with two pairs of sigillae. Both dorsum and venter greyish, with black markings.
PALP (Figs 19A–C, 20A–D). Cymbial ectobasal process simple, V-shaped with pointed end. Paracymbium finger-like, narrow towards tip, with sparse long hairs. Metaine embolic apophysis distal end oval, longer than wide with blunt end, extending forward.
EMBOLUS. Long, arc-shaped, with curved tip. Conductor strong, arising meso-retrolaterally from bulb and extending clockwise, longer than wide, with membranous end.
Female (paratype SWUC-T-TEg-08-03, Fig. 1M)
MEASUREMENTS. Total length 7.50. Prosoma 3.14 long, 2.59 wide; opisthosoma 4.42 long, 3.61 wide. Eye sizes and interdistances: AME 0.18, ALE 0.23, PME 0.21, PLE 0.20; AME–AME 0.18, AME–ALE 0.20, PME–PME 0.14, PME–PLE 0.23, ALE–PLE 0.07. MOA 0.61 long, front width 0.52, back width 0.58. Clypeus height 0.28.
LEG MEASUREMENTS. I = 14.05 (3.95, 5.03, 3.48, 1.59); II = 10.84 (3.18, 3.75, 2.64, 1.27); III = 6.51 (1.94, 2.21, 1.49, 0.87); IV = 8.93 (2.86, 3.01, 2.05, 1.01). Leg formula: 1243. Other morphological characteristics same as in male.
EPIGYNE (Figs 19D–E, 21A–B). Posterior margin of epigynal plate with indistinct sclerotized depression.
VULVA. Spermathecae semicircular. Fertilization ducts thick, S-shaped.
Distribution
China, Guizhou (Weining) (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 142-146, DOI: 10.5852/ejt.2022.834.1905, http://zenodo.org/record/7017596