Shuqiangius chuan Wang, Marusik & Yao, 2025

Shuqiangius chuan Wang, Marusik & Yao sp. nov.

Figs 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6

Type material.

Holotype: China • ♂; Sichuan, Jiangyou Co., Chonghua Town, Wuma Rd ; 32.0259°N, 104.9275°E; elev. 796 m; 15 May 2024; X. Zhang, Y. Wang & Q. Meng leg.; SYNU-Ar 00496 GoogleMaps . Paratypes: China • 2 ♀; same data as for holotype; SYNU-Ar 00497 –98 GoogleMaps • 1 ♂; Sichuan, Lushan Co., Feixianguan Town, Longdongpo Vill. ; 30.0900°N, 103.0675°E; elev. 905 m; 24 May 2024; X. Zhang, Y. Wang & Q. Meng leg.; SYNU-Ar 00499 GoogleMaps • 1 ♀; same data as for preceding; SYNU-Ar 00500 GoogleMaps • 1 ♀; Sichuan, Liangshan Yi Aut. Pref., Mianning Co., Yihai Town, Damawu Vill. ; 28.6107°N, 102.2369°E; elev. 2213 m; 9 Jun 2024; X. Zhang, Y. Wang & Q. Meng leg.; SYNU-Ar 00501 GoogleMaps .

Etymology.

The specific name is derived from the type locality ( Sichuan) and is a noun in apposition.

Diagnosis.

The new species is similar to S. rarobulbus comb. nov., but can be easily distinguished by a male palp lacking tegular lobe ( TL, Figs 3 C View Figure 3 , 4 A – C View Figure 4 vs small, Lo et al. 2024 a: figs 25 B, 26 B), by tip of cymbium ca 1 / 2 of overall length of cymbium (Fig. 3 A – D View Figure 3 vs 1 / 3, Lo et al. 2024 a: figs 25 B – D, 26 A – C), by tip of cymbium sharply pointed (Fig. 3 A – C View Figure 3 vs blunt, Lo et al. 2024 a: figs 25 B – D, 26 A – C), by base of conductor (C) transparent (Figs 3 A – C View Figure 3 , 4 B – C View Figure 4 vs weakly sclerotized and brown, Lo et al. 2024 a: fig. 25 B), and by retrolateral tibial apophysis ( RTA) ca 1 / 3 of tibial length (Fig. 3 A – D View Figure 3 vs 1 / 2, Lo et al. 2024 a: figs 25 B – D, 26 A – C).

Description.

Male ( holotype): Total length 4.35; carapace length / width 1.85 / 1.59; abdomen length / width 2.50 / 1.33. Carapace egg-shaped, brownish, covered with white setae. Radial furrows indistinct and fovea longitudinal. In dorsal view, eyes with AER strongly recurved and PER strongly procurved. Ocular area blackish brown with dense setae (Fig. 2 A View Figure 2 ). Eye diameters and inter-distances: AME 0.08, ALE 0.22, PME 0.16, PLE 0.15, AME – AME 0.09, AME – ALE 0.06, PME – PLE 0.24, ALE – PLE 0.15, PME – PME 0.24; eye sizes ALE > PME > PLE > AME. Clypeus height 0.38. Chelicerae yellowish brown, with 1 promarginal and 1 retromarginal teeth. Endite dark brown. Sternum dark brown, length / width 1.00 / 0.78. Legs yellowish (Fig. 2 A, B View Figure 2 ). Measurements of palp and legs: palp 2.67 (0.70, 0.30, 0.32, 1.35), leg I 8.23 (2.25, 0.72, 2.20, 2.03, 1.03), leg II 7.81 (2.13, 0.70, 2.03, 2.00, 0.95), leg III 6.48 (1.88, 0.63, 1.54, 1.68, 0.75), leg IV 6.04 (1.70, 0.61, 1.33, 1.65, 0.75). Abdomen oval, dorsally dark brown, with yellow markings; laterally with yellow pattern; ventrally brown with yellow dashed spots nearly symmetrically distributed in the middle and at edges. Cardiac mark indistinct (Fig. 2 A, B View Figure 2 ).

Palp as in Fig. 3 A – D View Figure 3 ; femur length / width 0.72 / 0.21; patella length / width 0.28 / 0.21; tibia wider than long, with three apophyses. Retrolateral tibial apophysis ( RTA) large and twisted; ventral tibial apophysis (VTA) digitiform or pointed; cymbium longer than femur, patella and tibia together; ca 2.7 times longer than wide, tip of cymbium very long ca 1 / 2 of cymbium length and longer than wide. Bulb ca 1.3 times wider than long. Tegular lobe ( TL) lacking. Conductor (C) long and wide, with membranous base, tip bend and point toward proximal. Embolus (E) very long forming 360 ° loop and terminating almost in center of bulb, base of embolus (E) large located in retrolateral half of bulb.

Male leg spination:

Female ( paratype, SYNU-Ar 00497 ): Total length 5.15; carapace length / width 2.16 / 1.81; abdomen length / width 2.99 / 2.32. Carapace brown, covered with dense white setae, except for medially. Eye diameters and inter-distances: AME 0.06, ALE 0.20, PME 0.17, PLE 0.16, AME – AME 0.13, AME – ALE 0.06, PME – PLE 0.25, ALE – PLE 0.18, PME – PME 0.30; eye sizes ALE > PME > PLE > AME. Clypeus height 0.51. Sternum length / width 1.05 / 0.88. Measurements of palps and legs: palp 2.12 (0.59, 0.34, 0.46, 0.73), leg I 7.72 (2.33, 0.76, 1.98, 1.66, 0.99), leg II 7.12 (2.13, 0.74, 1.80, 1.56, 0.89), leg III 5.93 (1.82, 0.65, 1.30, 1.40, 0.76), leg IV 5.64 (1.68, 0.64, 1.20, 1.38, 0.74). Abdomen light yellow, with brown median band, sides darker; venter with broad, dark, median band from epigastric furrow to spinnerets, and light yellowish bands along median band (Fig. 5 B, E View Figure 5 ).

Epigyne and endogyne as in Fig. 6 B, E View Figure 6 ; epigynal plate about as wide as long, with large entirely rebordered atrium, 1.5 times longer than wide, widest in anterior 1 / 5; posteriorly with distinct pocket (PP); medially atrium with kind of septum (not rebordered, just raised median part). Copulatory openings (CO) anteriorly situated. Copulatory ducts (CD) curved. Fertilization ducts (FD) slender with hook-like terminal.

Female leg spination:

Variation.

SYNU-Ar 00498 , 500–501: Total length 4.90, 5.33, 5.77; carapace length 2.10, 2.13, 2.14. Abdomen from light to almost uniformly brown (Fig. 5 A, C, D, F View Figure 5 ).

Distribution.

China ( Sichuan, type locality; Fig. 1 View Figure 1 ).