Yunguirius wangqiqiae Wei & Liu, 2024

Wei, Mian, Liu, Jie & Wang, Kai, 2024, Four new species of the genus Yunguirius (Araneae, Agelenidae) from China, ZooKeys 1211, pp. 1-15 : 1-15

Yunguirius wangqiqiae Wei & Liu sp. nov.

Figs 6 , 7 , 10

Type material.

Holotype ♀ ( HBU-WM-24-004 ), 1 ♀ paratype ( HBU-WM- 24-005 ): China: Yunnan Province, Zhaotong City, Weixin County, Houshan mountain , 27.8147 ° N, 104.8050 ° E, elevation: 1363 m, 1. X. 2018, C. F. Tao and H. Y. Chen leg.

Etymology.

The specific name is dedicated to Ms Qiqi Wang, at the desire of Caifu Tao, who provided the holotype; a noun (name) in genitive case.

Diagnosis.

The females of Yunguirius wangqiqiae sp. nov. resemble those of Y. subterebratus and Y. terebratus in that they have long blind sacs of the copulatory ducts, approximately equal to the length of the openings of the copulatory ducts, while the copulatory ducts are ventrally connected with the spermathecae (Figs 1 B , 6 B ; fig. 245 B in Zhu et al. 2017). In contrast, other species such as Y. duoge , Y. parvus sp. nov., Y. trigonus sp. nov. and Y. xiangding have short blind sacs, shorter than the length of the openings of the copulatory ducts (Fig. 2 B , 4 B ; figs 2 B, 4 B in Li et al. 2023), or have long blind sacs but the copulatory ducts are dorsally connected with the spermathecae such as Y. ornatus and Y. xiannushanensis sp. nov. (Fig. 8 ; fig. 3 B in Li et al. 2023). However, Y. wangqiqiae sp. nov. can be distinguished from the latter by the following characteristics: 1) the atrium is bowl-shaped, wider than long, and lacks the fold (Fig. 6 A ), versus being trapezoidal in Y. subterebratus (fig. 245 A in Zhu et al. 2017) or being subrounded, with the width roughly equal to the length, and presenting the fold in Y. terebratus (Fig. 1 A ); 2) the copulatory ducts featuring only the prototype of the secondary layers (Fig. 6 B ), versus possessing advanced secondary layers in Y. terebratus (Fig. 1 B ); 3) the spermathecal stalks are long and extend laterally with conch-shaped distal ends (Fig. 6 B ), versus being extremely short in Y. subterebratus (fig. 245 B in Zhu et al. 2017), and in Y. terebratus , they are long but extend obliquely upward, with large and round distal ends (Fig. 1 B ).

Description.

Female (holotype) (Fig. 7 ). Carapace reddish brown. Cervical and radial groove distinct. Cephalic region moderately raised and wide, lateral margin with distinct furrows. Chelicerae with 3 promarginal teeth and 2 retromarginal teeth, condyle red. Sternum longer than wide. Abdomen pale yellow, with 5 chevron-shaped patterns, covered by hairs. Legs red. Total length 14.48. Carapace 7.51 long, 5.03 wide, cephalic region 4.28 wide. Abdomen 7.95 long, 4.80 wide. Eye size and interdistance: AME 0.22, ALE 0.31, PME 0.32, PLE 0.38; AME – AME 0.16, AME – ALE 0.20, AME – PME 0.19, ALE – PLE 0.11, PME – PME 0.09, PME – PLE 0.45. Leg measurements: Leg I 19.71 (2.53, 0.93, 4.98, 2.11, 4.08, 3.47, 1.96), leg II 17.82 (2.21, 0.86, 4.44, 1.93, 3.23, 3.28, 2.11), leg III 14.82 (2.00, 0.92, 3.67, 1.73, 2.44, 2.85, 1.61), leg IV 19.73 (2.31, 1.11, 4.87, 1.87, 3.84, 4.13, 1.84). Epigyne (Fig. 6 ). Epigynal teeth absent. Atrium large, bowl-shaped, anterior margin incomplete. Posterior epigynal sclerite weakly sclerotized and opalescent. Hoods weak, situated laterally. Fold absent. Copulatory ducts broad, laterally originated, slightly folded, with the prototype of the secondary layers; blind sacs long and with distal tips overlapped. Spermathecal base small; spermathecal stalk long, with distal tip conch-shaped and extended laterally; spermathecal head only remaining a sclerotized end. Fertilization ducts posteriorly situated.

Male. Unknown.

Distribution.

China (Guizhou, Yunnan).

Figures

Figure 1. Epigyne and vulva of Yunguirius terebratus A epigyne, ventral view B vulva, dorsal view. Abbreviations: A = atrium; BS = blind sac; CD = copulatory duct; CO = copulatory opening; F = fold; FD = fertilization duct; H = hood; MP = mating plug; PES = posterior epigynal sclerite; SB = spermathecal base; SH = spermathecal head; SL = the secondary layer of copulatory duct; SS = spermathecal stalk. The white dashed line in A represents the margin of atrium and in B represents the spermathecal head. The black outline B shows the blind sac of the copulatory duct. The red dashed line and arrow in B indicate the opening of copulatory duct. The blue area indicates the copulatory duct, and the yellow area indicates the secondary layer of the copulatory duct. Scale bar: 0.50 mm.

Figure 2. Epigyne of Yunguirius parvus sp. nov. A epigyne, ventral view B vulva, dorsal view. Abbreviations: A = atrium; BS = blind sac; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; H = hood; PES = posterior epigynal sclerite; SB = spermathecal base; SH = spermathecal head; SS = spermathecal stalk. The white dashed line B indicates the spermathecal head, the white outline B indicates the fertilization duct. Scale bar: 0.50 mm.

Figure 4. Epigyne of Yunguirius trigonus sp. nov. A epigyne, ventral view B vulva, dorsal view. Scale bars: 1.00 mm. Abbreviations: A = atrium; BS = blind sac; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; H = hood; PES = posterior epigynal sclerite; SB = spermathecal base; SH = spermathecal head; SS = spermathecal stalk. The white dashed line B indicates the spermathecal head, the white outline B indicates the fertilization duct. Scale bar: 0.50 mm.

Figure 6. Epigyne of Yunguirius wangqiqiae sp. nov. A epigyne, ventral view B vulva, dorsal view. Abbreviations: A = atrium; BS = blind sac; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; H = hood; PES = posterior epigynal sclerite; SB = spermathecal base; SH = spermathecal head; SL = the secondary layer of copulatory duct; SS = spermathecal stalk. Scale bar: 0.50 mm.

Figure 7. Characters of the female of Yunguirius wangqiqiae sp. nov. A habitus, dorsal view B habitus, prolateral view C eye area, frontal view D eye area, dorsal view E cephalic region, lateral view. Scale bars: 2.00 mm (A, B); 0.50 mm (C, D); 0.25 mm (E).

Figure 8. Epigyne of Yunguirius xiannushanensis sp. nov. A epigyne, ventral view B vulva, dorsal view C vulva, apical view. Abbreviations: A = atrium; BS = blind sac; CD = copulatory duct; CO = copulatory opening; F = fold; FD = fertilization duct; H = hood; PES = posterior epigynal sclerite; SB = spermathecal base; SH = spermathecal head; SL = the secondary layer of copulatory duct; SS = spermathecal stalk. Scale bars: 0.50 mm.

Figure 10. Distributions of the species of Yunguirius. 1 Y. duoge 2 Y. ornatus 3 Y. parvus sp. nov. 4 Y. subterebratus 5 Y. terebratus 6 Y. trigonus sp. nov. 7 Y. wangqiqiae sp. nov. 8 Y. xiangding 9 Y. xiannushanensis sp. nov.