Femorbiona kayashimai Wu & Wen & Yin & Xu 2026, comb. nov.

Femorbiona kayashimai (Ono, 1994) comb. nov. Ḃ氏Dkss Fig. 5 Clubiona kayashimai Ono, 1994: 73, figs 3–5 (♀). Clubiona kayashimai – Song, Zhu & Chen 1999: 425, fig. 246q–r (♀). Diagnosis The female of this species can be distinguished from that of all other congeners by its relatively short DPS that is ca ½ as long as bursa, and the visibility of the CD in dorsal view (Fig. 5E–F) (vs DPS relatively long, more than ⅔ as long, CD covered by large SP in dorsal view in all other species of Femorbiona, such as F. brachyptera, F. pinglong sp. nov. and F. triangula sp. nov.; as in Zhang et al. 2021b: fig. 2c–d; Figs 7E–F, 9E–F). It can also be distinguished from F. brachyptera, F. phami, F. shenzhen and F. triangula sp. nov. by the CO being centrally located on the epigynal plate (Fig. 5C–D) (vs CO located posteriorly in the latter four species, as in Zhang et al. 2021b: figs 2a–b, 4a–b, 6a–b; Fig. 9C–D). Material examined CHINA • 1 ♀; Guangxi Zhuang Autonomous Region, Fangchenggang City, Shiwandashan National Nature Reserve, Banba Village, Dongkou Station; 21°43′ N, 107°32′ E; 820 m a.s.l.; 27 Apr. 2021; J. Liu leg; HNU1399. Description Female (HNU1399) Total length 3.24; carapace 1.34 long, 0.95 wide; abdomen 1.79 long, 1.10 wide. Carapace oval, light orange, fovea red; cephalic region slightly narrowed; cervical and radial grooves indistinct (Fig. 5A). Eyes: AER distinctly recurved, PER wider than AER, almost straight in dorsal view. Eye sizes and interdistances: AME 0.06, ALE 0.09, PME 0.08, PLE 0.07, AME–AME 0.07, AME–ALE 0.06, PME– PME 0.14, PME–PLE 0.10, MOQL 0.22, MOQA 0.18, MOQP 0.31. Chelicerae light orange, with five promarginal and four retromarginal teeth. Sternum yellow, 0.77 long, 0.55 wide. Labium and endites colored as chelicerae, longer than wide. Legs colored as sternum, without markings. Leg measurements: I 2.27 (0.59, 0.30, 0.57, 0.52, 0.29), II 2.31 (0.55, 0.42, 0.68, 0.40, 0.26), III 2.19 (0.68, 0.35, 0.33, 0.46, 0.37), IV 3.14 (0.67, 0.43, 0.73, 0.69, 0.62). Leg formula 4213. Abdomen yellowish-white, uniformly colored, densely clothed with setae, without patterns, with two pairs of muscle depressions situated centrally on dorsal side (Fig. 5A). Ventral side colored as dorsal side, without patterns. Spinnerets short, yellow (Fig. 5B). EPIGYNE (Fig. 5C–F). Epigynal plate wider than long, with SP and BS distinctly visible through integument in ventral view (Fig. 5C). CO small and indistinct, situated medially on epigynal plate. CD sclerotized, separated by about twice their own diameter, visible in dorsal view, extending anteriorly to connect with BS. SP tubular and sinuous; DPS slightly convoluted, extending anteriorly; VPS about 2 × as long as wide, nearly parallel and closely positioned, each bearing digitiform glands. FD indistinct. BS reniform, translucent, occupying nearly ⅔ of the epigynal plate, slightly longer than wide, with smooth surface. Male Unknown. Distribution China (Guangxi Zhuang Autonomous Region, Taiwan). Remarks Femorbiona kayashimai comb. nov. was originally described as Clubiona kayashimai by Ono (1994), based solely on a female specimen with simple hand-drawn illustrations of the genitalia. Since then, the species has not been reported again for nearly 30 years. Although we were unable to examine the type material of C. kayashimai, we contacted Hirotsugu Ono, who confirmed that our identification of the present specimen is correct.