Solitudes dushengi, Lin & Li, 2020

Lin, Yejie & Li, Shuqiang, 2020, Description on Solitudes dushengi gen. et sp. nov. from Xinjiang, China (Araneae: Gnaphosidae), Zoological Systematics 45 (4), pp. 312-315 : 315

Solitudes dushengi sp. nov. ( Figs 1–2 )

Type material. Holotype female (IZCAS-Ar41820) China, Xinjiang Uyghur Autonomous Region, Aksu Prefecture , Awat County, Bositan pastureland, near G580 Road , Sandy wilderness, 80.9567°N, 39.8647°E, 03 March 2020, Sheng Du leg.

Etymology. The species is named after Mr. Sheng Du, the collector of the holotype; noun (name) in genitive case.

Diagnosis. Same as for the subfamily.

Description. Female ( Figs 1–2 ). Total length (without chelicerae) 9.64. Colour in alcohol: carapace pale; chelicerae, endites, labium and sternum brown; Legs pale, tarsi covered with spatulate hair, claw obvious long; Abdomen pale. Carapace 5.19 long, 3.85 wide; Fovea about 0.15 of carapace length. Eye sizes and interdistances: AME 0.23, ALE 0.10, PME 0.19, PLE 0.13, AME-AME 0.28, PME-PME 0.09, AME-PME 0.27, AME-ALE 0.08, PME-PLE 0.27, ALE-PLE 0.15. AER recurved, PER procurved. Chelicerae with 2 promarginal teeth and 1 retromarginal tooth. Sternum oval. Endites darker in middle. Leg covered with white long hair, on leg IV tarsus with two spines. Leg measurements: I: 12.34 (3.80 + 1.75 + 3.00 + 1.60 + 2.19), II: 12.46 (3.50 + 1.88 + 2.76 + 1.85 + 2.47), III: 12.75 (3.40 + 1.65 + 2.60 + 2.28 + 2.22), IV: 13.67 (3.72 + 1.40 + 3.24 + 2.81 + 2.50). Spination of leg I: femur 3p, 3d, patella 2p, tibia 3p, 2d, 3r, 4v, metatarsus 1p, 1r, 2v; leg II: femur 3p, 3d, 1-2r, patella 2p, tibia 3p, 2d, 3r, 6v, metatarsus 2p, 1r, 2v; leg III: femur 2p, 3d, 2r, patella 2p, 2r, tibia 4p, 3d, 3r, 6v, metatarsus 4p, 2d, 4r, 6v; leg IV: femur 2p, 3d, 2r, patella 2p, 2r, tibia 4p, 2d, 4r, 6v, metatarsus 5p, 5d, 2r, 4r, 6v, tarsus 2d. Abdomen oval, covered with dense white setae. Spinnerets white. ALS 0.60, PMS 0.18, PLS 0.29.

Epigyne ( Figs 2A–B ). Plate triangular, with a ratio of length to width of 1:1, atrium heart-shaped, with a ratio of length to width of 1:2, with an M-shaped hood terminally. Copulatory opening covered by median plate, with a ratio of length to width of 5:4; copulatory ducts short. Two pairs of receptacles, primary receptacle longer than wide, secondary receptacle oval. Fusion bubbles present on posterior aspect. Fertilization ducts close to each other.

Distribution. Known only from the type locality.

Funding This study was supported by the National Natural Science Foundation of China (31530067).

Acknowledgements The manuscript benefitted greatly from comments by Yuri Marusik (Magadan, Russia), Peter Jäger (Frankfurt a M., Germany), Theo Blick (Hummeltal, Germany). Danniella Sherwood (London, UK) checked the English.

Figures

Figure 1. Solitudes dushengi sp. nov., female holotype. A. Habitus, dorsal view. B. Same, ventral view. C. Leg I tarsus, lateral view. D. Same, dorsal view. E. Leg IV tarsus, lateral view. F. Same, dorsal view. Scale bars:A–B=1.0mm; C–F =0.5mm.

Figure 2. Solitudes dushengi sp. nov., female holotype. A. Epigyne, ventral view. B. Vulva, dorsal view. Scale bars=0.1 mm.