Yunguirius duoge B. Li, Zhao & S. Li, 2023

Li, Bing, Zhao, Zhe, Okumura, Ken-ichi, Meng, Kaibayier, Li, Shuqiang & Chen, Haifeng, 2023, Yunguirius gen. nov., a new genus of Coelotinae (Araneae, Agelenidae) spiders from southwest China, ZooKeys 1159, pp. 51-67 : 51

Yunguirius duoge B. Li, Zhao & S. Li sp. nov.

Figs 2 , 5

Type material.

Holotype ♀ (IZCAS-Ar44401): China: Yunnan Province: Kunming City: Panlong District, Duoge Village, Laohuanglong Cave, 25.4254°N, 102.9259°E, elevation: 2731 m, 4.XII.2014, Y. Li and Z. Chen leg. Paratypes: 4♀♀ (IZCAS-Ar44402-Ar44405): China: Yunnan Province: Kunming City: Panlong District, Duoge Village, Huanglong Cave, 25.4285°N, 102.9244°E, elevation: 2337 m, 8.XII.2019, Z. Chen leg.

Etymology.

The new species is named after the type locality (Duoge Village); noun in apposition.

Diagnosis.

Yunguirius duoge sp. nov. resembles Y. terebratus by having rectangular posterior epigynal sclerite, subrounded atrium and dumbbell-shaped spermatheca at its first half. However, it can be distinguished from Y. terebratus as follows: 1) posterior margin of the epigyne narrow and pointed in the middle (Fig. 2A ) in Y. duoge sp. nov., but flat (fig. 28 in Peng and Wang 1997) in Y. terebratus ; 2) epigynal folds banded (Fig. 2A ) in Y. duoge sp. nov., but dentiform (fig. 28 in Peng and Wang 1997) in Y. terebratus ; 3) anterior copulatory duct close to each other (Fig. 2B ) in Y. duoge sp. nov., but lapped (fig. 29 in Peng and Wang 1997) in Y. terebratus ; and 4) stalk of spermatheca extending laterally (Fig. 2B ) in Y. duoge sp. nov., but extending anteriorly (fig. 29 in Peng and Wang 1997) in Y. terebratus .

Description.

Female (holotype) (Fig. 2 ). Body length 13.27. Carapace 6.04 long, 3.66 wide. Abdomen 7.23 long, 4.86 wide. Eye sizes and interdistances: AME: 0.13, ALE: 0.17, PME: 0.15, PLE: 0.15; AME-AME: 0.09; AME-ALE: 0.13; AME-PME: 0.04; ALE-PLE: 0.03; PME-PME: 0.07; PME-PLE: 0.18. Leg measurements: I: 16.43 (1.86, 0.82, 4.08, 1.62, 3.30, 2.73, 2.02); II: 14.90 (1.73, 0.77, 3.55, 1.56, 2.82, 2.48, 1.99); III: 11.43 (1.39, 0.79, 3.04, 1.08, 1.98, 1.54, 1.61); IV: 16.86 (1.79, 0.81, 4.06, 1.92, 3.72, 2.84, 1.72). Leg formula 4> 1> 2> 3. Carapace brown, anterior and lateral black; fovea and radial grooves dark; chelicerae black, with three promarginal and two retromarginal teeth; endites and labium dark brown, anterior white with thin hairs; sternum brownish, lateral brown, c. 1.4 times longer than wide. Abdomen yellowish-brown, nearly oval, with five dark chevrons and dark speckles. Epigyne (Fig. 2A, B ): posterior epigynal sclerite rectangular, atrium large, anterior widest, with wide lateral margins, inside with osteon cordiform, outside with brown markings, fold slender and banded, c. 6 times longer than wide; copulatory opening located anteriorly; copulatory duct symmetric, posterior widest; spermatheca dumbbell-shaped at first half, its head continuous through the copulatory duct; fertilization duct long, c. 5 times longer than wide, with a bent end.

Male. Unknown.

Distribution.

Yunnan Province, China (Fig. 5 ).

Figures

Figure 2. Epigyne and female habitus of Yunguirius duoge sp. nov. A epigyne, ventral B vulva, dorsal C female habitus, dorsal D same, ventral E same, lateral. Scale bar equal for C-E. Abbreviations: A = atrium; CD = copulatory duct; CO = copulatory opening; F = fold; FD = fertilization duct; H = hood; PES = posterior epigynal sclerite; S = spermatheca; SB = spermathecal base; SH = spermathecal head; St = stalk.

Figure 5. Distribution records of species of Yunguirius gen. nov. in China 1 Y. duoge sp. nov. 2 Y. ornatus 3 Y. subterebratus 4 Y. terebratus 5 Y. xiangding sp. nov.