Parazygiella jianxini Mi & Wang 2026, sp. nov.

Parazygiella jianxini Mi & Wang sp. nov. Figs 1, 2, 3, 4, 5 Chinese name. 建新副楚蛛. Type material. Holotype: China • ♂; Xizang Auton. Region, Shigatse City, Gyirong Co., Gyirong Township, Nai Vill.; 28°24.43'N, 85°20.83'E, ca 3,310 m a. s. l.; 18 Aug. 2024; X. Q. Mi et al. leg.; TRU - Araneidae -411. Paratypes: • 5 ♀♀ 8 ♂♂; same data as for holotype; TRU - Araneidae -412 –424; 11 ♀ 17 ♂, Gyirong Township, Zhuo Vill.; 28°31.11'N, 85°13.05'E, ca 3,330 m a. s. l.; 4 Aug. 2019; X. Q. Mi & C. Wang leg.; TRU - Araneidae -425 –452; • 1 ♀, Gyirong Township, Zhuo Vill.; 28°22.87'N, 85°19.60'E, ca 2,790 m a. s. l.; 17 Aug. 2024; X. Q. Mi et al. leg.; TRU - Araneidae -453; • 6 ♀♀ 8 ♂♂, Zongga Township, Xia Vill.; 28°34.91'N, 85°15.73'E, ca 3,800 m a. s. l.; 20 Aug. 2024; X. Q. Mi et al. leg.; TRU - Araneidae -454 –467. Etymology. The species is named after Professor Jianxin Li, a forestry expert (Tongren University, China). Diagnosis. Parazygiella jianxini Mi & Wang, sp. nov. resembles P. yanghongae Mi & Wang, sp. nov. in both somatic and morphology of copulatory organs, but it can be distinguished by having the tegular projection (TP) about 4 / 5 of the cymbial length (Fig. 4 C) vs half of cymbial length (Fig. 7 C); epigyne widest at middle part (Fig. 5 A) vs widest at basal part (Fig. 8 A); and posterior plate (PP) ~ 2.50 × wider at anterior than posterior (Fig. 5 B) vs ~ 1.36 × wider at anterior than posterior (Fig. 8 B). Description. Male (holotype, Figs 3 D – F, 4 A – E). Total length 5.50. Carapace 2.80 long, 2.10 wide. Abdomen 3.30 long, 2.10 wide. Clypeus 0.13 high. Eye sizes and interdistances: AME 0.20, ALE 0.13, PME 0.15, PLE 0.13, AME – AME 0.13, AME – ALE 0.10, PME – PME 0.10, PME – PLE 0.20, MOA length 0.48, anterior width 0.48, posterior width 0.40. Leg measurements: I 14.80 (3.70, 4.90, 4.40, 1.80), II 10.70 (2.90, 3.60, 2.90, 1.30), III 6.80 (2.10, 2.20, 1.60, 0.90), IV 8.40 (2.50, 2.90, 2.00, 1.00). Carapace greyish brown in cephalic region and greyish yellow in thoracic region (Fig. 3 D, F). Cervical groove conspicuous (Fig. 3 D). Chelicerae dark brown, with three teeth on both promargin and retromargin (Fig. 3 E, F). Endites with tooth anterolaterally, brown at base, with paler tip; labium dark brown at base, with paler tip (Fig. 3 E). Sternum dark brown (Fig. 3 E). Legs yellow with grey annuli and spots (Fig. 3 D). Abdomen ~ 1.57 × longer than wide, dorsal patches extended from anterior to posterior, dark brown with white median longitudinal band (Fig. 3 D, F). Ventral abdomen yellow to dark brown with paired white bracket-shaped marks laterally (Fig. 3 E). Spinnerets yellowish (Fig. 3 E, F). Palp (Fig. 4 A – E): femur ~ 4.0 × longer than wide (Fig. 3 D – F); patella equal in length and width (Fig. 4 A – C, E); tibia ~ 1.3 × longer than wide in ventral view (Fig. 4 A – C, E); cymbium ~ 1.26 × longer than wide, retrolateral edge swollen (Fig. 4 A – E); paracymbium heavily sclerotized, divided into two lobes with sharp distal edges (Fig. 4 B, C, E); bulb ~ 1.56 × longer than wide in ventral view; tegulum with long, horn-shaped projection (TP), about as long as 4 / 5 of cymbium length (Fig. 4 A – E); radix (R) long and curved, heavily sclerotized, running parallel to edge of cymbium; median apophysis (MA) situated near base of bulb, short, rod-shaped, heavily sclerotized, with approximately 10 ridges distally (Fig. 4 A, B, E); embolus long, flattened, with wide, translucent base, curved over tip of bulb and extending basally nearly half of bulb length (Fig. 4 A – E); conductor (C) translucent, roughly square (Fig. 4 A, B, D, E); terminal apophysis (TA) slightly wider than long in ventral view, arched angularly over tip of tegulum (Fig. 4 A – E). Female (paratype TRU - Araneidae -412, Figs 3 A – C, 5 A – D). Total length 6.80. Carapace 2.80 long, 2.00 wide. Abdomen 4.80 long, 3.30 wide. Clypeus 0.08 high. Eye sizes and interdistances: AME 0.18, ALE 0.13, PME 0.17, PLE 0.13, AME – AME 0.13, AME – ALE 0.10, PME – PME 0.10, PME – PLE 0.18, MOA length 0.50, anterior width 0.48, posterior width 0.43. Leg measurements: I 10.40 (2.90, 3.70, 2.60, 1.20), II 8.10 (2.40, 2.80, 1.90, 1.00), III 5.50 (1.80, 1.80, 1.10, 0.80), IV 6.90 (2.10, 2.50, 1.50, 0.80). Habitus similar to that of male (Fig. 3 A – C). Epigyne (Fig. 5 A – D): ~ 1.49 × longer than wide in ventral view, slightly convex, widest at middle part, with transverse ridges and grooves; scape about 1 / 2 epigynal base width, round distally (Fig. 5 A, C); posterior plate (PP) smooth, ~ 2.50 × wider at anterior than posterior (Fig. 5 B); copulatory openings slit-like, situated on dorsal surface of scape (Fig. 5 B); copulatory ducts (CD) slightly curved, connected to spermathecae at anterodorsal surface (Fig. 5 D); spermathecae rounded, about 1 / 3 diameters apart (Fig. 5 D); fertilization ducts (FD) longer than diameter of spermatheca. Variation. Total length: ♂♂ 5.30–6.10 (N = 34), ♀♀ 6.80–8.00 (N = 23). Natural history. The specimens were mainly found on webs between trunks of large trees during the night; they hide in retreats under bark in the daytime or when disturbed. The webs have about 25 radii (Figs 1, 2). Distribution. China (Xizang) (Fig. 9).