Baiyuerius jiquanyui Wei & J. Liu sp. nov.

Figs 1C, 19, 20, 35

Type material. Holotype ♂ (CBEE), CHINA: Yunnan Province: Qujing City, 24.8090°N, 104.0089°E, elevation: 1838 m, 15.Ⅴ ⅠⅠⅠ.2019, local collector leg.

Etymology. The specific name is dedicated to Mr. Quanyu Ji who provided the paratypes of another cuii- group species, Baiyuerius cuii sp. nov.; noun (name) in genitive case.

Diagnosis. Males of B. jiquanyui sp. nov. resemble those of B. cuii sp. nov., and can be distinguished from the latter, see in description of cuii -species group and B. cuii sp. nov. for detailed statement.

Description. Male holotype (Fig. 20). 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 chevron–shaped patterns, covered with blueish gray hairs. Legs reddish brown, metatarsi and tarsi of the first and second legs with long and dense hairs. Total length 11.18. Carapace 6.05 long, 4.10 wide, cepharic region 3.04 wide. Abdomen 5.13 long, 3.86 wide. Eye size and interdistance: AME 0.20, ALE 0.26, PME 0.25, PLE 0.28; AME–AME 0.09, AME–ALE 0.19, AME–PME 0.07, ALE–PLE 0.05, PME–PME 0.07, PME–PLE 0.26. Leg measurements: I 15.24 (4.41, 1.71, 3.89, 3.57, 2.03), II 13.65 (3.87, 1.67, 3.19, 3.27, 1.93), III 11.33 (3.45, 1.49, 1.99, 2.83, 1.56), IV 15.24 (4.32, 1.77, 3.62, 3.95, 1.82).

Palp (Fig. 19). Lateral patellar apophysis with blunt tip, dorsal patellar apophysis short and conical. Retrolateral tibial apophysis subequal to the length of tibia, lateral tibial apophysis with round tip. Cymbial furrow subequal to 1/2 the length of cymbium, bean-shaped and with distinct dorsal margin. Conductor long and crescent, ventral margin serrated, dorsal margin of conductor with strongly sclerotized process, with ridges on surface, distal tip tapered; dorsal apophysis of conductor short and nearly triangular, with thin basal lamellar. Embolus long, embolic base slightly enlarged. Median apophysis square, with a notch on retrolateral margin, strongly sclerotized.

Female. Unknown.

Distribution. China (Yunnan Province).