Tonsilla shuikouensis K. Liu, J. Liu & X. Xu, 2021

Liu, Ji-he, Xiao, Yong-hong, Zhang, Meng-zhen, Xu, Xiang & Liu, Ke-ke, 2021, Four new coelotine species (Araneae, Agelenidae, Coelotinae) from South China, with the first description of the male of Coelotes septus Wang, Yin, Peng & Xie, 1990, ZooKeys 1029, pp. 93-112 : 93

Tonsilla shuikouensis K. Liu, J. Liu & X. Xu sp. nov. Figure 7

Material examined.

Holotype ♀, China, Jiangxi Prov., Ji’an City, Jinggangshan County Level City , Ciping Town , Xiajing Village , Shuikou Scenic Spot , 26°33'04.83"N, 114°27'42.83"E, 898 m, 7 Dec. 2013, Ke-ke Liu et al. leg.

Etymology.

The name refers to the type locality, Shuikou Scenic Spot; adjective.

Diagnosis.

The female of this species resembles T. variegata (Wang, Yin, Peng & Xie, 1990) in having the slightly separated horn-like epigynal teeth located at the antero-median margin of a large atrium, and the short copulatory duct and spermathecae aggregated at the posterior part of vulvae, but can be separated from it by the large heart-shaped epigynal atrium (vs. horseshoe-shaped in T. variegata ) and the copulatory ducts arising from sub-posteromedian part of the epigyne (vs. sub-posterolateral in T. variegata ),and spermathecal heads pointing submedially towards the dorsal copulatory openings (Fig. 7C, D ).

Description.

Female. Habitus as in Fig. 7A, B . Total length 7.32. Carapace 3.02 long, 1.79 wide. Eye sizes and interdistances: AME 0.13; ALE 0.17; PME 0.16; PLE 0.17; AME-AME 0.10; AME-ALE 0.06; PME-PME 0.10; ALE-ALE 0.39; PME-PLE 0.11; PLE-PLE 0.56; ALE-PLE 0.08; AME-PME 0.06; AME-PLE 0.25. MOA: 0.21 long; 0.26 anterior width, 0.38 posterior width. Chelicerae with large basal tubercle, three promarginal teeth (median largest) and two retromarginal teeth (proximal larger). Leg measurements: I 6.17 (1.48, 0.85, 1.55, 1.46, 0.83); II 5.63 (1.36, 0.79, 1.29, 1.38, 0.81); III 4.75 (0.96, 0.74, 0.98, 1.40, 0.67); IV 6.41 (1.19, 0.93, 1.56, 1.91, 0.82). Pedicel 2.54. Abdomen 3.68 long, 2.72 wide.

Coloration. Carapace yellow-brown, posteriorly with dark radial stripes. Chelicerae, endites, labium, and sternum dark yellow-brown. Legs yellow-brown. Abdomen brown, dorsally with six pale chevron stripes on sub-medial part.

Epigyne (Fig. 7C, D ). Atrium, heart-shaped, rising from anterior to sub-posterior. Epigynal teeth thin and short, anteromedially located at the margin of atrium, separated by half length of epigynal teeth. Copulatory openings located at the posterior part of the atrium, separated by a narrow septum. Copulatory ducts ear-shaped, longer than epigynal teeth. Spermathecal heads finger-shaped, convergent, as long as half of epigynal teeth. Spermathecae sac-shaped, separated less than half of their lengths. Fertilization duct short, located posteriorly on spermathecae.

Male. Unknown.

Comments.

This species is characterized by the large atrium anteriorly located and the thin and short epigynal teeth anteromedially located. These characters are similar to those of Tonsilla species. Thus, this new species is tentatively placed in the genus Tonsilla until their matching males are found.

Distribution.

Known only from the type locality in Jiangxi Province, China (Fig. 8 ).

Figures

Figure 7. Tonsilla shuikouensis sp. nov., female holotype A habitus, dorsal view B same, ventral view C epigyne, ventral view D vulva, dorsal view. Scale bars: 1 mm (A, B); 0.1 mm (C, D). Abbreviations: At - atrium, CD - copulatory duct, CO - copulatory opening, ET - epigynal teeth, FD - fertilization duct, SH - spermathecal head, Spe - spermatheca.

Figure 8. Type localities of Coelotes septus Wang et al., 1990, Draconarius lingdang sp. nov., D. substrophadatus sp. nov., Orumcekia cipingensis sp. nov., and Tonsilla shuikouensis sp. nov.