Baiyuerius cuii 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 : 420-423

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.15595540
persistent identifier	https://treatment.plazi.org/id/24487D50-B413-FFDA-9B91-F8C5FC9FFE6E
treatment provided by	Plazi
scientific name	Baiyuerius cuii Wei & J. Liu
status	sp. nov.

Treatment

Baiyuerius cuii Wei & J. Liu sp. nov.

Figs 17 View FIGURE 17 , 18 View FIGURE 18 , 35 View FIGURE 35

Type material. Holotype ♂, CHINA: Hubei Province: Enshi Tujia and Miao Autonomous Region , Xianfeng County, Pingbaying National Forest Park , 29.3993°N, 108.9831°E, elevation: 1268 m, 23.Ⅰ Ⅴ.2023, B.H. Cui leg.; GoogleMaps

Paratypes: 2♂, CHINA: Sichuan Province: Bazhong City , Nanjiang County, Micangshan National Forest Park , 32.6216°N, 106.8288°E, elevation: 1779 m, 1.Ⅴ ⅠⅠⅠ.2020, Q.Y. Ji leg. GoogleMaps

Etymology. The specific name is dedicated to Mr. Bohan Cui who collected the specimens, noun (name) in genitive case.

Diagnosis. Males of B. cuii sp. nov. resemble those of B. jiquanyui sp. nov., see in description of cuii -species group. And can be distinguished from the latter by 1) the retrolateral tibial apophysis approximately 1/2 the length of tibia ( Fig. 17C View FIGURE 17 ) [vs. subequal to the length of tibia in B. jiquanyui sp. nov. ( Fig. 19C View FIGURE 19 )]; 2) cymbial furrow arc-shaped ( Fig. 17C View FIGURE 17 ) [vs. bean-shaped in B. jiquanyui sp. nov. ( Fig. 19C View FIGURE 19 )]; 3) process of dorsal margin of conductor long, with flattened tip ( Fig. 17B View FIGURE 17 ) [vs. short, with tapering tip in B. jiquanyui sp. nov. ( Fig. 19B View FIGURE 19 )]; 4) median apophysis human-ear-shaped ( Fig. 17B View FIGURE 17 ) [vs. square in B. jiquanyui sp. nov. ( Fig. 19D View FIGURE 19 )].

Description. Male holotype ( Fig. 18 View FIGURE 18 ). Carapace dark brown, cervical and radial grooves distinct. Cephalic region moderately raised, lateral margin with distinct furrows. Chelicerae robust, with three promarginal teeth and two retromarginal teeth, condyle red. Sternum longer than wide. Abdomen pale yellow, with 6 chevron-shaped patterns, covered with blueish gray long setae. Legs reddish brown, metatarsi and tarsi of the first and second legs with long and dense hairs. Total length 11.87. Carapace 6.39 long, 4.22 wide, cephalic region 3.25 wide. Abdomen 5.48 long, 3.49 wide. Eye size and interdistance: AME 0.18, ALE 0.28, PME 0.22, PLE 0.25; AME–AME 0.09, AME–ALE 0.19, AME–PME 0.12, ALE–PLE 0.08, PME–PME 0.07, PME–PLE 0.33. Leg measurements: I 16.99 (4.71, 1.84, 4.28, 4.19, 2.30), II 15.51 (4.13, 1.79, 3.59, 3.98, 2.31), III 12.99 (3.63, 1.63, 2.46, 3.46, 2.00), IV 17.40 (4.87, 1.97, 4.01, 4.60, 2.27).

Palp ( Fig. 17 View FIGURE 17 ). Lateral patellar apophysis relatively thin, with blunt tip, dorsal patellar apophysis conical. Retrolateral tibial apophysis subequal to 1/2 the length of tibia, lateral tibial apophysis short, with round tip. Cymbial furrow subequal to 1/2 the length of cymbium, arc-shaped and with distinct dorsal margin. Conductor long and crescent, ventral margin serrated and membranous, dorsal margin of conductor with strongly sclerotized process extending retrolaterally, distal part flattened; dorsal apophysis of conductor short, with membranous base and a thin basal lamellar. Embolus long, slightly twisted, embolic base enlarged and round. Median apophysis human-ear-shaped, strongly sclerotized and with basal process present.

Female. Unknown.

Distribution. China (Hubei Province and Sichuan Province).