Sinopoda yanzi Wang & Li, 2021

Wang, Ziyi, Liang, Wei & Li, Shuqiang, 2021, Five new Sinopoda species (Araneae, Sparassidae) from China and Thailand, ZooKeys 1012, pp. 1-19 : 1

Sinopoda yanzi Wang & Li sp. nov. Figures 7A-F , 8A, B , 9I, J , 10

Material examined.

Holotype ♂ (IZCAS-Ar41615), China, Hunan Province, Huaihua City, Chenxi County, Huomachong Town, Yanzi Cave; 27.8545°N, 110.2605°E; 408 m; 6 Sept. 2019, Ziyi Wang & Zhigang Chen leg. Paratype 1 ♀ (IZCAS-Ar41627), same data as holotype, but 18 Mar. 2016; Yulong Li & Zhigang Chen leg. 1 ♀ (IZCAS-Ar41628), same data as holotype, 6 Sept. 2019; Ziyi Wang & Zhigang Chen leg.

Diagnosis.

The male of this new species is similar to Sinopoda tumefacta Zhong, Jäger, Chen & Liu ( Zhong et al. 2019: 69, figs 53A-E, 54A-F, 55A-D) in the shape of conductor, but it can be distinguished by the following: the dRTA is sharp, short, and triangular, while the dRTA is long and an irregular-quadrilateral in S. tumefacta ; the vRTA is smooth in ventral view (Fig. 7A-D ), while the vRTA is concave in ventral view in S. tumefacta . The female of this new species is similar to S. dehiscens Zhong, Jäger, Chen & Liu, 2019 ( Zhong et al. 2019: 28, figs 20A, B, 21A-D) in having an analogous lobal septum and lateral lobes, but it can be separated by the following: the middle part of lateral lobes has a downward protrusion but there is no protrusion in S. dehiscens ; the anterior part of the internal ducts is not fused with the median line, while in S. dehiscens the ducts are distinctly divided; the glandular appendages are wider than the posterior parts of the internal duct system in this new species, but the glandular appendages are as wide as the posterior parts of internal duct system in S. dehiscens ; the posterior parts of internal duct system are swollen and slightly divided, while they are distinctly separated posterolaterally in S. dehiscens ; this new species has fusion bubbles medially on the lobal septum, but S. dehiscens has no fusion bubble (Fig. 8A, B ).

Description.

Male (holotype, IZCAS-Ar41615) Measurements: PL 5.44, PW 4.87; AW 2.88; OL 6.08, OW 3.91. Eyes: AME 0.18, PME 0.26, ALE 0.3, PLE 0.32, AME-AME 0.24, AME-ALE 0.04, PME-PME 0.3, PME-PLE 0.34, AME-PME 0.4, ALE-PLE 0.28, CHAME 0.2, CHALE 0.28. Palp: 8.12 (2.69, 1.02, 1.66, -, 2.75). Legs: I 25.11 (7.05, 1.92, 7.37, 6.66, 2.11); II 28.44 (8.14, 2.05, 8.07, 7.69, 2.49); III 22.42 (6.73, 1.98, 6.34, 5.32, 2.05); IV 24.01 (6.6, 1.79, 6.6, 6.85, 2.17). Leg formula: II-I-IV-III. Spination: palp: 131 101 - 3010. Legs: Fe 323, IV 123, Pa 101, Ti I and II 1318, III and IV 1216, Mt 1014, III 2024, IV 2026. Chelicerae: furrow with three anterior teeth, four posterior teeth, and six denticles.

Palp: as in diagnosis. Cymbium almost twice as long as tibia. Embolus arising from tegulum in nearly the 5- o’clock-position. Embolic tip slightly longer than the embolic apophysis. Conductor arising from tegulum at the 1- o’clock-position, elongated flake with distal part flat. Tegulum covers medial part of embolus. Spermophor distinctly S-shaped. RTA arising from anterior part of tibia (Fig. 7B ).

Coloration in ethanol: yellowish brown. Prosoma: dorsally yellowish brown with distinct fovea and radial furrow, covered with dark hairs. Labium and sternum yellowish brown. Chelicerae deep reddish brown. Legs: yellowish brown. Opisthosoma: dorsally dark reddish brown, covered with dark hairs, with bright bands in anterior part; ventrally yellowish brown with bright band on both sides of central axis. Spinnerets yellowish brown (Fig. 7E, F ).

Female (paratype, IZCAS-Ar41627) Measurements: PL 5.83, PW 5.32; AW 3.46; OL 7.05, OW 4.55. Eyes: AME 0.2, PME 0.22, ALE 0.3, PLE 0.32, AME-AME 0.22, AME-ALE 0.3, PME-PME 0.4, PME-PLE 0.48, AME-PME 0.32, ALE-PLE 0.1, CHAME 0.12, CHALE 0.24. Palp: 8.62 (2.49, 1.02, 1.85, -, 3.26). Legs: I 21.25 (6.08, 2.56, 5.76, 4.93, 1.92); II 22.73 (6.73, 2.75, 6.21, 5.12, 1.92); III 20.16 (6.15, 2.43, 5.12, 4.8, 1.66); IV 21.65 (6.6, 2.24, 5.51, 5.25, 2.05). Leg formula: II-IV-I-III. Spination: palp: 131 101 213 3030. Legs: Fe I and II 323, III 333, IV 133, Pa 101, IV 000, Ti I and II 1018, III 2026, IV 2126, Mt 1014, IV 3034. Chelicerae: furrow with three anterior teeth, four posterior teeth, and 28 denticles.

Copulatory organ: as in diagnosis. Epigynal field wider than long, with one short anterior band partly integrated with the field and one slit sensillum on each side close to the field. Lateral lobes fused, concave medially. Anterior and posterior part of internal ducts not fused along median line. Glandular appendages extending laterally in anterior half of internal duct system. Posterior part of internal duct system swollen, fertilization ducts arising posteriorly. Unexpanded membranous sac between fertilization ducts (Fig. 8A, B ).

Coloration in ethanol: as in male, but dorsal prosoma yellowish brown, and posterior part with a bright band (Fig. 9I, J ).

Etymology.

The specific name refers to the type locality, Yanzi Cave; noun in apposition.

Distribution.

Known only from the type locality (Fig. 10 , China, Hunan).

Figures

Figure 7. Sinopoda yanzi sp. nov., holotype male from Yanzi Cave A-C left palp (A prolateral B ventral C retrolateral) D retrolateral view of RTA E, F habitus (E dorsal F ventral). Abbreviations: C conductor, dRTA dorsal branch of retrolateral tibial apophysis, E embolus, EA embolic apophysis, SP spermophor, T tegulum, vRTA ventral branch of retrolateral tibial apophysis. Scale bars: 0.5 mm (A-D); 2 mm (E, F).

Figure 8. Sinopoda yanzi sp. nov., paratype female from Yanzi Cave A epigyne B vulva. Abbreviations: AB anterior bands, FB fusion bubble, FD fertilization duct, GA glandular appendages, LL lateral lobes, LS lobal septum, MS membranous sac, PP posterior part of internal duct system, SS slit sensillum. Scale bars: 0.5 mm.

Figure 9. A, B S. hongruii sp. nov. female paratype C, D S. jiangzhou sp. nov. female paratype E, F S. saiyok sp. nov. female holotype G, H S. yanjin sp. nov. female holotype I, J S. yanzi sp. nov. female paratype. Scale bars: 2 mm.

Figure 10. Locality records for five new species of Sinopoda: 1 S. hongruii sp. nov. (Anhui, China) 2 S. jiangzhou sp. nov. (Guangxi, China) 3 S. saiyok sp. nov. (Kanchanaburi, Thailand) 4 S. yanjin sp. nov. (Yunnan, China) 5 S. yanzi sp. nov. (Hunan, China).