Holotype China • ♂ (SYNU-1145); Xizang, Rikaze City, Jilong Co., Zalong Vill.; 28°22.865'N, 85°21.158'E, 2715 m; 31.VII.2014; Y. Li leg.

Paratypes: China • 1 ♀ (SYNU-1100); Rikaze City, Dingjie Co., Chentang Town; 27°54.875'N, 87°28.869'E, 3267 m; 3.VIII.2014; Y. Li leg. • 1 ♂ (SYNU-1099); Rikaze City, Dingri Co., Rongxia Town; 28°03.450'N, 86°21.148'E, 3383 m; 27.VII.2014; Y. Li leg. • 2 ♂ (SYNU-1054–1055); Nyingchi, Bayi Distr., Bayi Town, Biri Mt; 28°51.334'N, 94°47.941'E, 2900 m; 11.VII.2013; Y. Lin leg. • 11♀ (SYNU-1057–1067); same data as above • 4♀ (SYNU-1146–1149); same data as above • 2 ♂ 4 ♀ (SYNU-1113–1118); Nyingchi, Bayi Distr., Lulang Town; 29°41.449'N, 94°43.605'E, 3530 m; 14.VII.2013; Y. Lin leg. • 9 ♂ 2 ♀ (SYNU-1101–1112); Nyingchi, Bayi Distr., Lulang Town; 29°21.449'N, 94°43.605'E, 3530 m; 14.VII.2013; Q. Cao leg. • 5 ♂ 1 ♀ (SYNU-1068–1073); Nyingchi, Mainling Co.; 29°13.310'N, 94°13.309'E, 3050 m; 13.VIII.2013; Y. Lin leg. • 2 ♂ 1 ♀ (SYNU-1152–1154); same data as above • 6 ♂ 4 ♀ (SYNU- 1074–1083); Nyingchi, Mainling Co.; 29°12.316'N, 94°12.649'E, 3060 m; 13.VIII.2013; Y. Lin leg. • 4♂10♀ (SYNU-1084–1097); Nyingchi, Mainling Co., Pai Town; 29°30.264'N, 94°53.868'E, 3321 m; 6.VIII.2015; J. Wu leg.

Males of this new species are similar to those of C.yujufeng Tong & Yang, 2023, but can be distinguished by lacking a cluster of black, strong setae on the labium (Fig. 6D) vs. setae cluster present (Wang et al. 2023: fig. 5D) and psemblous with trifurcate process (tfp, Fig. 7D, K) vs. with semicircular, prolateral rim and trifurcate ventral process (Wang et al. 2023: fig. 6E, J). Females of the new species are similar to those of C.zayu sp. nov., but can be distinguished by the fusiform median plate (Fig. 8H) vs. pear-shaped (Fig. 11H) and the long copulatory duct, which extends beyond the postgastric scutum (Fig. 8I) vs. just reaching groove between posterior spiracles (Fig. 11I).

Male (holotype). Body: uniformly colored, yellowish brown; habitus as in Fig. 6A, C, E; length 1.75. Carapace (Fig. 6B, F): 0.84 long, 0.68 wide; pars thoracica strongly elevated in lateral view, entire surface finely reticulated. Eyes (Fig. 6B, G): ALE: 0.07; PME: 0.05; PLE: 0.04; ALE circular, PME oval, PLE oval; posterior eye row straight from above, procurved from front; ALE separated by less than one radius. Clypeus (Fig. 6F, G): margin unmodified, straight in front view, sloping forward in lateral view. Mouthparts (Fig. 6D, G): chelicerae unmodified; anterior-median part of the endites slightly sclerotized. Sternum (Fig. 6D): as long as wide, with pointed anterolateral bumps. Abdomen (Fig. 6A, C, E): 0.91 long, 0.53 wide; oval, scuta pale orange; dorsal scutum covering about 3/4 of abdomen length, about 2/3 of abdomen width, fused to epigastric scutum; postgastric scutum small, covering about 1/2 of abdominal venter. Palp (Fig. 7A–L): reddish brown; patella extremely long club-shaped, length/width = 3.41, about 5.5 times longer than femur, and 2.5 times longer than bulb; cymbium (length/width = 1.92) narrow in dorsal view; psembolus with trifurcate process (tfp), ventral outgrowth (vo) and small retrolateral fold (rlf).

Female (SYNU-1100). As in male except for the following. Body: habitus as in Fig. 8A, C, E; length 1.94. Carapace: 0.83 long, 0.74 wide. Eyes: ALE 0.07; PME 0.05; PLE 0.06. Abdomen: 1.11 long, 0.76 wide. Postgaster (Fig. 8F, H): with rounded anterior sclerite (as) and fusiform median plate (mp). Endogyne (Fig. 8I): copulatory duct (cd) long, narrow, sinuous with tip well beyond postepigastric scutum; apodemes (ap) slender.

The specific name, derived from Latin word trifoliatus, refers to the three-forked processes on the distal part of the bulb; adjective.

Known only from the type locality.