Taira nyagqukaensis, Zhao & Wang & Irfan & Zhang, 2021

Zhao, Jing-Xia, Wang, Lu-Yu, Irfan, Muhammad & Zhang, Zhi-Sheng, 2021, Furtherrevisionofthemesh-webspidergenus TairaLehtinen, 1967 (Amaurobiidae) with the description of six new species, Zootaxa 5020 (3), pp. 457-488 : 471

Taira nyagqukaensis sp. nov.

Figures 13 , 14 , 24

Type material. Holotype ♀ (SWUC-T-AM-14-01), CHINA, Sichuan, Nyagquka (Yajiang) County, Mage Valley , 30°01.219′N 100°58.861′E, 2954 m, 15.V.2019, L.Y. Wang, T. Yuan and P. Liu . Paratypes: 4 ♀ (SWUC-T-AM-14- 02~05), with same data as holotype .

Etymology. The specific name is derived from the type locality, adjective in apposition.

Diagnosis. The new species resembles T. gyaisiensis by having big and semicircle shape epigynal teeth and the anterior margin of the epigynal median lobe cleft ( Figs 13B, C , 14B, C ). T. nyagqukaensis sp. nov., however, differs from the latter by the following characters: both sides of the median lobe are strongly bulged towards epigynal center in T. nyagqukaensis sp. nov. ( Figs 13B , 14B ), whereas they are not bulged in T. gyaisiensis sp. nov.; the cleft median lobe; copulatory openings present ventro-mesally; fertilization ducts extending dorso-laterally in T. nyagqukaensis sp. nov., whereas extending vertically with epigastric furrow in T. gyaisiensis sp. nov. ( Figs 13B, C , 14B, C ).

Description. Female. Total length 6.86–8.26. Holotype ( Fig. 14A ) total length 8.26. Carapace 3.83 long, 2.38 wide; opisthosoma 4.62 long, 3.39 wide. Eye size and interdistances: AME 0.09, ALE 0.20, PME 0.15, PLE 0.17; AME–AME 0.11, AME–ALE 0.15, PME–PME 0.19, PME–PLE 0.28, ALE–PLE 0.07. MOA 0.50 long, front width 0.32, base width 0.49. Clypeus height 0.18. Chelicerae with 4 promarginal and 3 retromarginal teeth. Leg measurements: I 9.74 (2.81, 3.33, 2.24, 1.36); II 7.73 (2.41, 2.57, 1.64, 1.11); III 7.07 (2.12, 2.52, 1.53, 0.90); IV 8.90 (2.66, 3.13, 1.98, 1.13).

Epigyne ( Figs 13B, C , 14B, C ) with a dentiform and cleft median lobe. Epigynal teeth thick and close to anterior retro-lateral margin of the median lobe. Copulatory ducts long, located posteriorly. Spermathecae reniform. Fertilization ducts extending dorso-laterally.

Male unknown.

Distribution. Known only from the type locality, Sichuan, China ( Fig. 24 ).

Figures

FIGURE 13. Taira nyagqukaensis sp. nov. Holotype female. A. Epigyne, ventral view; B. Same, dorsal view. Abbreviations: CD, copulatory duct; ET, epigynal teeth; FD, fertilization duct; ML, median lobe; Sp, spermathecae.

FIGURE 14. Taira nyagqukaensis sp. nov. Holotype female.A. Habitus, dorsal view; B. Epigyne, ventral view; C. Same, dorsal view.

FIGURE 24. Distribution records of the Taira flavidorsalis-group. Red dots represent new species, green dots represent previously described species. 1 T. borneoensis sp. nov. 2 T. cangshan 3 T. concava 4 T. decorata 5 T. flavidorsalis 6 T. gyaisiensis sp. nov. 7 T. latilabiata 8 T. liboensis 9 T. nyagqukaensis sp. nov. 10 T. obtusa 11 T. sulciformis 12 T. wanzhouensis sp. nov. 13 T. xuanenensis sp. nov. 14 T. yangi sp. nov.