Eriovixia yaoi sp. nov. Figs 9, 10, 18A, 19E, 20E

Type material.

Holotype ♂ (IZCAS-Ar41684), China: Yunnan, Xishuangbanna, Mengla County, Menglun Township, Menglun Nature Reserve, Lvshilin Forest Park, limestone seasonal rainforest (21°54.61'N, 101°16.89'E, 640 m alt.), 14.XI.2009, G. Tang et al. leg. Paratypes: 1♂2♀ (IZCAS-Ar41685-41687), same data as holotype; 1♀(IZCAS-Ar41688), secondary seasonal moist forest (21°54.54'N, 101°17.20'E, 713 m alt.), 1-9.X.2006, G. Zheng leg.; 1♀ (IZCAS-Ar41689), same locality (21°54.54'N, 101°17.20'E, 713 m alt.), 19-25.X.2006, G. Zheng leg.; 1♂ (IZCAS-Ar41690), same locality (21°54.72'N, 101°16.94'E, 645 m alt.), 27.VII.2007 G. Zheng leg.; 1♂ (IZCAS-Ar41691), same locality (21°54.61'N, 101°17.01'E, 633 m alt.), 28.VII.2007 a.m. G. Zheng leg. Other material examined: 4♂2♀ (IZCAS-Ar41692), same locality (21°54.39'N, 101°16.81'E, 612 m alt.), 10.VIII.2007 a.m. G. Zheng leg.; 2♀ (IZCAS-Ar41693), secondary tropical montane evergreen broad-leaved forest (21°57.53'N, 101°12.38'E, 899 m alt.), 6.VIII.2007, G. Zheng leg.; 1♂ (IZCAS-Ar41694), primary tropical seasonal rainforest (21°57.67'N, 101°11.89'E, 790 m alt.), 7.VIII.2007 a.m. G. Zheng leg.; 1♂1♀ (IZCAS-Ar41695), Anogeissus acuminata plantation (about 20 yr) (21°53.99'N, 101°16.81'E, 611 m alt.), 19.VIII.2007 a.m. G. Zheng leg.; 1♀ (IZCAS-Ar41696), Lvshilin Forest Park (21°54.71'N, 101°16.90'E, 656 m alt.), 13.XI.2009, G. Tang et al. leg.; 1♂ (IZCAS-Ar41697), same locality (21°54.71'N, 101°16.90'E, 664 m alt.), 15.XI.2009, G. Tang et al. leg.; 2♂1♀ (IZCAS-Ar41698), same locality (21°54.71'N, 101°16.94'E, 652 m alt.), 16.XI.2009, G. Tang et al. leg.; 1♀ (IZCAS-Ar41699), same locality (21°54.71'N, 101°16.94'E, 660 m alt.), 16.XI.2009, G. Tang et al. leg.; 1♀ (IZCAS-Ar41700), same locality (21°54.56'N, 101°16.86'E, 615 m alt.), 29.XI.2009, G. Tang et al. leg.; 1♂ (IZCAS-Ar41701), same locality (21°54.68'N, 101°16.95'E, 637 m alt.), 10.VIII.2018 night, C. Wang et al. leg; 2♀ (IZCAS-Ar41702), same locality (21°54.38'N, 101°16.82'E, 627 m alt.), 23.XI.2009, G. Tang et al. leg.;1♂ (IZCAS-Ar41703), same locality (21°54.58'N, 101°16.50'E, 566.2 m alt.), 28.IV.2019 night, C. Wang et al. leg; 1♀ (IZCAS-Ar41704), same locality (21°54.38'N, 101°16.82'E, 627 m alt.), 23.XI.2009, G. Tang et al. leg.; 1♂ (IZCAS-Ar41705), G213 roadside (21°54.12'N, 101°16.93'E, 590 m alt.), 24.XI.2009, G. Tang et al. leg.; 2♀ (IZCAS-Ar41706), same locality (21°54.09'E, 101°17.02'E, 570 m alt.), 28.XI.2009, G. Tang et al. leg.; 1♀ (IZCAS-Ar41707), G213 roadside (21°53.83'N, 101°17.00'E, 618 m alt.), 25.XI.2009, G. Tang et al. leg.; 1♀ (IZCAS-Ar41708), same locality (21°53.65'N, 101°16.98'E, 589 m alt.), 26.XI.2009, G. Tang et al. leg.; 1♂ (IZCAS-Ar41709), banyan plantation (21°54.09'E, 101°17.02'E, 579 m alt.), 28.XI.2009, G. Tang et al. leg.; 1♀ (IZCAS-Ar41710), G213 roadside (21°53.99'N, 101°16.95'E, 590 m alt.), 2.XII.2009, G. Tang et al. leg.; 1♀ (IZCAS-Ar41711), same locality (21°53.80'N, 101°17.08'E, 604.0 m alt.), 30.VII.2018, Z. Bai et al. leg; 2♀ (IZCAS-Ar41712), G213 roadside near Lvshilin (21°53.28'N, 101°16.75'E, 629.0 m alt.), 25.IV.2019, C. Wang et al. leg; 2♂ (IZCAS-Ar41713), G213 roadside (21°54.34'N, 101°16.79'E, 618 m alt.), 2.V.2019, Y. Tong et al.; 2♀ (IZCAS-Ar41714), #3 site in Mafengzhai Village (21°53.68'N, 101°17.33'E, 539 m alt.), 8.V.2019, Y. Tong et al.

Comparative material.

Eriovixia jianfengensis Han & Zhu, 2010, 1♂ (TRU), CHINA: Hainan, Ledong County, Jianfeng Township, Jianfengling National Natural Reserve (18°44.45'N, 108°51.49'E, 856 m alt.), 11.IV.2019, C. Wang et al. leg .; 2♀ (TRU), same locality (18°44.61'N, 108°51.24'E, 812 m alt.), 12.IV.2019, C. Wang et al. leg .

Etymology.

The specific name is a patronym of Dr. Zhiyuan Yao (College of Life Sciences, Shenyang Normal University), one of the collectors of the type specimens; noun (name) in genitive case.

Diagnosis.

Eriovixia yaoi sp. nov. resembles E. jianfengensis Han & Zhu, 2010 in habitus and copulatory organs, but differs in: 1) male lacking cephalic protuberance vs. present (Fig. 21D); 2) inner branch of the terminal apophysis longer than outer branch vs. inner branch shorter than outer branch (Fig. 21A); 3) narrower conductor vs. wider (Fig. 21A); 4) epigyne triangular and slightly lobed (enlarged medially) vs. triangular, without lobes (Han and Zhu 2010: figs 9A, B); and 5) carapace unicolour vs. darker in ocular region with dark, thin medial line on cephalic region (Han and Zhu 2010: figs 2B-D).

Description.

Male (holotype, Figs 9A-D, 18A, 19E, 20E). Total length 3.30. Carapace 1.70 long, 1.40 wide. Abdomen 1.60 long, 1.40 wide. Clypeus 0.18 high. Eye sizes and interdistances: AME 0.10, ALE 0.08, PME 0.10, PLE 0.08, AME-AME 0.10, AME-ALE 0.15, PME-PME 0.15, PME-PLE 0.18, MOA length 0.30 with anterior width 0.33 and posterior width 0.30. Leg measurements: I 6.50 (2.10, 2.35, 1.50, 0.55), II 4.60 (1.50, 1.55, 1.05, 0.50), III 3.20 (1.05, 1.05, 0.65, 0.45), IV 4.50 (1.40, 1.55, 1.10, 0.45). Carapace yellowish-white, cervical groove obvious, cephalic protuberance lacking. Chelicerae, endites, labium and sternum yellow. Legs yellowish-brown, with dark rings on tibia of legs III-IV. Abdomen about 1.2 times longer than wide, dorsum with a large, pale folium, black-brown posterolaterally; ventre greyish-yellow with brown markings laterally.

Palp (Figs 9A, B, 18A): median apophysis with 2 pointed branches; embolus conical, longer than terminal apophysis in prolateral view, slightly curved near tip of terminal apophysis; terminal apophysis elliptical in apical view, bifurcated distally.

Female (paratype IZCAS-Ar41685, Figs 9E, F, 10). Total length 4.40. Carapace 1.90 long, 1.50 wide. Abdomen 3.10 long, 2.90 wide. Clypeus 0.08 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.10, PLE 0.08, AME-AME 0.10, AME-ALE 0.18, PME-PME 0.15, PME-PLE 0.23, MOA length 0.30 with anterior width 0.33 and posterior width 0.33. Leg measurements: I 6.85 (2.25, 2.45, 1.50, 0.65), II 6.05 (1.95, 2.05, 1.45, 0.60), III 3.50 (1.15, 1.20, 0.70, 0.45), IV 5.15 (1.75, 1.80, 1.10, 0.50). Habitus similar to that of male, but cervical groove more conspicuous.

Epigyne (Fig. 10) about 1.2 times longer than wide, with a triangular, laterally constricted scape; median plate keeled; copulatory openings arcuate in posterior view; copulatory ducts directed ventrally and extended anteriorly, then ventrally again, connected to the spermathecae at its posterior surface; spermathecae globular, separated from each other.

Variation.

Total length: ♂♂ 3.30-3.40; ♀♀ 3.90-4.40.

Distribution.

China (Yunnan).