Baiyuerius Zhao, B. Li & S. Q. Li 2023
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2025
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| author | Wei, Mian Zhu, Yang Liu, Jie Zhang, He Liu, Fengjie |
| author_facet | Wei, Mian Zhu, Yang Liu, Jie Zhang, He Liu, Fengjie |
| contents | <p><b>Genus <i>Baiyuerius</i> Zhao, B. Li & S. Li, 2023</b></p><p><b>Type species.</b> <i>Baiyuerius zuojiang</i> Zhao, B. Li & S. Li, 2023</p><p><b>Diagnosis.</b> <i>Baiyuerius</i> resembles <i>Yunguirius</i> B. Li, Zhao & S. Q. Li, 2023 in 1) carapace with high and broad cephalic region, and legs usually red or orange (Figs 6A, B, 10A, B, 24A, B; fig. 4A, B in Liu <i>et al</i>. 2020; fig. 4A, B in Luo <i>et al</i>. 2023; fig. 7A, B in Wei <i>et al</i>. 2024); 2) conductor large and crescent, with modified dorsal margin, median apophysis human-ear-shaped (Fig. 1A–E; fig. 317 in Wang <i>et al</i>. 2012); 3) epigyne with large atrium, and copulatory ducts with distinct blind sac (Fig. 2A–D; figs 2A, B, 8A, B in Wei <i>et al</i>. 2024). But males of <i>Baiyuerius</i> are diagnosed by the process on the dorsal margin of the conductor strongly sclerotized, except of the <i>digitus-</i> group species, which without the process (Fig. 1A–E) [vs. weakly sclerotized in the <i>Yunguirius</i> (fig. 317 in Wang <i>et al</i>. 2012)]; 2) embolic base enlarged (Fig. 1A–E) [vs. not so large in <i>Yunguirius</i> (fig. 317 in Wang <i>et al</i>. 2012)]. Females are distinguished from those of <i>Yunguirius</i> by 1) atrium without anterior margin, and the epigynal plate without sclerotized structure above atrium (Fig. 2A, C) [vs. atrium with or without anterior margin, but the epigynal plate with sclerotized part above atrium (fig. 3A in Zhao <i>et al</i>. 2023; figs 2A, 8A in Wei <i>et al.</i> 2024)]; 2) spermathecae nearly spherical, sometimes with tubercles (Fig. 2B, D) [vs. long and divided into two parts (fig. 2B in Zhao <i>et al.</i> 2023; fig. 2B in Wei <i>et al</i>. 2024)].</p><p><b>Key to the <i>Baiyuerius</i> species groups</b></p><p>1. Male............................................................................................... 2 Female (those of <i>cuii</i> and <i>digitus</i> -species groups unknown).................................................... 6</p><p>2. Dorsal margin of conductor without modified process (Fig. 21B)............................... <i>digitus-</i> species group Dorsal margin of conductor with modified process.......................................................... 3</p><p>3. Patella with two apophyses (Figs 17C, 19C).................................................. <i>cuii</i> -species group Patella with only one apophysis......................................................................... 4</p><p>4. Patellar apophysis thick and cylindrical, lateral tibial apophysis expanded and round, conductor dorsal apophysis extremely long (Figs 27C, D, 31C, E)........................................................... <i>zuojiang</i> -species group Patellar apophysis with pointed tip, lateral tibial apophysis long, with pointed tip, conductor dorsal apophysis short....... 5</p><p>5. Process of dorsal margin of conductor strongly sclerotized and divided into two branches, tegular sclerite Y-shaped (Fig. 1C in Hoang <i>et al.</i> 2023)................................................................... <i>rotulus</i> -species group The process with a distinct basal stalk and separated from dorsal margin of conductor, tegular sclerite not Y-shaped (Figs 3B, 5B, 11B).......................................................................... <i>chongzu</i> -species group</p><p>6. Epigynal teeth present (Figs 9A, 13A, 15A).............................................. <i>chongzu</i> -species group Epigynal teeth absent.................................................................................. 7</p><p>7. Epigynal plate large, width of epigynal pocket subequal to length, copulatory ducts long, without blind sacs (Figs 23A, B, 25A, B)................................................................................ <i>rotulus</i> -species group Epigynal plate relatively small, width of epigynal pocket obviously longer than length, copulatory ducts short, with blind sacs (Figs 29A, B, 33A, B)............................................................... <i>zuojiang-</i> species group</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_15561573 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Baiyuerius Zhao, B. Li & S. Q. Li 2023 Wei, Mian Zhu, Yang Liu, Jie Zhang, He Liu, Fengjie Biodiversity Taxonomy Animalia Arthropoda Arachnida Araneae Agelenidae Baiyuerius <p><b>Genus <i>Baiyuerius</i> Zhao, B. Li & S. Li, 2023</b></p><p><b>Type species.</b> <i>Baiyuerius zuojiang</i> Zhao, B. Li & S. Li, 2023</p><p><b>Diagnosis.</b> <i>Baiyuerius</i> resembles <i>Yunguirius</i> B. Li, Zhao & S. Q. Li, 2023 in 1) carapace with high and broad cephalic region, and legs usually red or orange (Figs 6A, B, 10A, B, 24A, B; fig. 4A, B in Liu <i>et al</i>. 2020; fig. 4A, B in Luo <i>et al</i>. 2023; fig. 7A, B in Wei <i>et al</i>. 2024); 2) conductor large and crescent, with modified dorsal margin, median apophysis human-ear-shaped (Fig. 1A–E; fig. 317 in Wang <i>et al</i>. 2012); 3) epigyne with large atrium, and copulatory ducts with distinct blind sac (Fig. 2A–D; figs 2A, B, 8A, B in Wei <i>et al</i>. 2024). But males of <i>Baiyuerius</i> are diagnosed by the process on the dorsal margin of the conductor strongly sclerotized, except of the <i>digitus-</i> group species, which without the process (Fig. 1A–E) [vs. weakly sclerotized in the <i>Yunguirius</i> (fig. 317 in Wang <i>et al</i>. 2012)]; 2) embolic base enlarged (Fig. 1A–E) [vs. not so large in <i>Yunguirius</i> (fig. 317 in Wang <i>et al</i>. 2012)]. Females are distinguished from those of <i>Yunguirius</i> by 1) atrium without anterior margin, and the epigynal plate without sclerotized structure above atrium (Fig. 2A, C) [vs. atrium with or without anterior margin, but the epigynal plate with sclerotized part above atrium (fig. 3A in Zhao <i>et al</i>. 2023; figs 2A, 8A in Wei <i>et al.</i> 2024)]; 2) spermathecae nearly spherical, sometimes with tubercles (Fig. 2B, D) [vs. long and divided into two parts (fig. 2B in Zhao <i>et al.</i> 2023; fig. 2B in Wei <i>et al</i>. 2024)].</p><p><b>Key to the <i>Baiyuerius</i> species groups</b></p><p>1. Male............................................................................................... 2 Female (those of <i>cuii</i> and <i>digitus</i> -species groups unknown).................................................... 6</p><p>2. Dorsal margin of conductor without modified process (Fig. 21B)............................... <i>digitus-</i> species group Dorsal margin of conductor with modified process.......................................................... 3</p><p>3. Patella with two apophyses (Figs 17C, 19C).................................................. <i>cuii</i> -species group Patella with only one apophysis......................................................................... 4</p><p>4. Patellar apophysis thick and cylindrical, lateral tibial apophysis expanded and round, conductor dorsal apophysis extremely long (Figs 27C, D, 31C, E)........................................................... <i>zuojiang</i> -species group Patellar apophysis with pointed tip, lateral tibial apophysis long, with pointed tip, conductor dorsal apophysis short....... 5</p><p>5. Process of dorsal margin of conductor strongly sclerotized and divided into two branches, tegular sclerite Y-shaped (Fig. 1C in Hoang <i>et al.</i> 2023)................................................................... <i>rotulus</i> -species group The process with a distinct basal stalk and separated from dorsal margin of conductor, tegular sclerite not Y-shaped (Figs 3B, 5B, 11B).......................................................................... <i>chongzu</i> -species group</p><p>6. Epigynal teeth present (Figs 9A, 13A, 15A).............................................. <i>chongzu</i> -species group Epigynal teeth absent.................................................................................. 7</p><p>7. Epigynal plate large, width of epigynal pocket subequal to length, copulatory ducts long, without blind sacs (Figs 23A, B, 25A, B)................................................................................ <i>rotulus</i> -species group Epigynal plate relatively small, width of epigynal pocket obviously longer than length, copulatory ducts short, with blind sacs (Figs 29A, B, 33A, B)............................................................... <i>zuojiang-</i> species group</p> |
| title | Baiyuerius Zhao, B. Li & S. Q. Li 2023 |
| topic | Biodiversity Taxonomy Animalia Arthropoda Arachnida Araneae Agelenidae Baiyuerius |
| url | https://doi.org/10.5281/zenodo.15561573 |