Baiyuerius imitatus Wei & J. Liu, 2025

Wei, Mian, Zhu, Yang, Liu, Jie, Zhang, He & Liu, Fengjie, 2025, New species and new combinations of the spider genus Baiyuerius Zhao, B. Li & S. Q. Li, 2023 (Araneae, Agelenidae, Coelotinae), Zootaxa 5636 (3), pp. 401-442 : 412-414

publication ID	https://doi.org/10.11646/zootaxa.5636.3.1
publication LSID	lsid:zoobank.org:pub:1A564430-7BA5-4159-A595-3BF3DF2F2D7A
DOI	https://doi.org/10.5281/zenodo.15561595
persistent identifier	https://treatment.plazi.org/id/24487D50-B40B-FFC1-9B91-F96CFD7EFC41
treatment provided by	Plazi
scientific name	Baiyuerius imitatus Wei & J. Liu
status	sp. nov.

Treatment

Baiyuerius imitatus Wei & J. Liu sp. nov.

Figs 9 View FIGURE 9 , 10 View FIGURE 10 , 35 View FIGURE 35

Type material. Holotype ♀ ( CBEE), CHINA: Guizhou Province: Tongren City, Yinjiang County, Ziwei Town , Tianqing Temple , 28.0117°N, 108.7349°E, elevation: 1199 m, 26.Ⅴ ⅠⅠ.2021, M. Wei leg. GoogleMaps

Etymology. The specific epithet is taken from the Latin word “imitatus ”, referring to the high similarity between the new species and B. shaanensis sp. nov.; adjective.

Diagnosis. Females of Baiyuerius imitatus sp. nov. resemble those of B. shaanensis sp. nov. by 1) atrium guitar-pick-shaped, with length subequal to width ( Figs 9A View FIGURE 9 , 15A View FIGURE 15 ); 2) copulatory ducts short, subequal to the length of spermatheca, and with curved blind sacs ( Figs 9B View FIGURE 9 , 15B View FIGURE 15 ). The new species can be distinguished from B. shaanensis sp. nov. by 1) size of atrium subequal to posterior epigynal sclerite ( Fig. 9A View FIGURE 9 ) [vs. obviously larger than posterior epigynal sclerite in the latter ( Fig. 15A View FIGURE 15 )]; 2) surface of epigynal pocket smooth, anterior margin membranous ( Fig. 9A View FIGURE 9 ) [vs. with furrows and with anterior margin sclerotized in the latter ( Fig. 15A View FIGURE 15 )]; 3) copulatory ducts connected with spermathecae apically, and the anterior parts of spermathecae most close to each other ( Fig. 9B View FIGURE 9 ) [vs. connected laterally in the latter, with the posterior parts of spermathecae most close to each other ( Fig. 15B View FIGURE 15 )].

Description. Female holotype ( Fig. 10 View FIGURE 10 ). Carapace dark brown. Cervical and radial groove distinct. Cephalic region dark and strongly raised, lateral margin with distinct furrows. Chelicerae with three promarginal teeth and two postmarginal teeth, condyle red. Sternum longer than wide. Abdomen gray, with five chevron-shaped patterns, covered by hairs. Legs reddish brown, metatarsi and tarsi of the first and second legs with normal hairs. Total length 11.48. Carapace 6.67 long, 5.56 wide, cephalic region 4.01 wide. Abdomen 5.94 long, 4.01 wide. Eye size and interdistance: AME 0.20, ALE 0.36, PME 0.25, PLE 0.27; AME–AME 0.16, AME–ALE 0.19, AME–PME 0.19, ALE–PLE 0.08, PME–PME 0.11, PME–PLE 0.47. Leg measurements: Leg I 14.32 (4.26, 1.97, 3.42, 3.09, 1.80), leg II 12.71 (3.72, 1.90, 2.93, 2.81, 1.67), leg III 10.53 (3.07, 1.53, 2.21, 2.58, 1.37), leg IV 14.61 (4.40, 1.80, 3.46, 3.53, 1.66).

Epigyne ( Fig. 9A View FIGURE 9 ). Epigynal teeth long. Atrium guitar-pick-shaped. Epigynal pocket large, anterior margin weakly sclerotized. Posterior epigynal sclerite distinct. Hoods situated laterally of atrium. Copulatory opening situated centrally.

Internal genitalia ( Fig. 9B View FIGURE 9 ). Copulatory ducts short, with elongate and curved blind sacs. Spermathecae oval, with the anterior part most close to each other, spermathecal heads reduced, with membranous tips remaining on the distal tips of blind sacs. Fertilization ducts short, situated posteriorly.

Male. Unknown.

Distribution. China (Guizhou Province).