Sudesna cangshan, Wang & Peng & Zhang, 2025

Wang, Lu-Yu, Peng, Xian-Jin & Zhang, Zhi-Sheng, 2025, Six new species and a new synonym of the mesh-web spider genus Sudesna Lehtinen, 1967 (Araneae, Dictynidae) from China, ZooKeys 1234, pp. 127-149 : 127-149

publication ID	https://doi.org/10.3897/zookeys.1234.145300
publication LSID	lsid:zoobank.org:pub:6DB976C7-4B5C-42C7-AA7E-D239CF3241CB
DOI	https://doi.org/10.5281/zenodo.15183779
persistent identifier	https://treatment.plazi.org/id/26EBB14F-502A-5E4E-AF0A-4EE3BBC67132
treatment provided by	ZooKeys by Pensoft
scientific name	Sudesna cangshan
status	sp. nov.

Treatment

Sudesna cangshan sp. nov.

Figs 1 View Figure 1 , 2 View Figure 2 , 15 (苍山苏蛛 View Figure 15 )

Type material.

Holotype: China • ♀ ( SWUC -T-DI-14-01 ); Yunnan Province; Dali City, Mount Cangshan, Dapoqing ; 25°34′38″N, 100°07′51″E; elev. 2043 m; 30 August 2009; Z. Z. Yang leg. GoogleMaps

Etymology.

The specific name is derived from the county where the type locality is located; used as a noun in apposition.

Diagnosis.

The female of this new species is similar to S. yangi sp. nov. (Figs 13 View Figure 13 , 14 View Figure 14 ) in having a pale body and 9 - shaped copulatory openings, but it can be distinguished by having copulatory openings as large as the spermathecal head (vs twice as large), gently curved copulatory ducts (vs abruptly bent at an acute angle), and bifurcate spermatheca (vs clavate) (Figs 1 View Figure 1 , 2 B, C View Figure 2 ).

Description.

Female holotype (Fig. 2 A View Figure 2 ) total length 3.31. Prosoma 1.27 long, 1.16 wide; Opisthosoma 2.23 long, 1.65 wide. Dorsum of prosoma pale, with high cephalic area. Eye sizes and interdistances: AME 0.05, ALE 0.08, PME 0.08, PLE 0.07; AME – AME 0.11, AME – ALE 0.09, PME – PME 0.13, PME – PLE 0.12, ALE – PLE 0.02. MOA 0.20 long, anterior width 0.20, posterior width 0.27. Clypeus height 0.12. Chelicerae stout, yellowish brown, with 3 promarginal and 3 retromarginal teeth. Legs yellowish. Leg measurements: I 3.73 (1.04, 1.58, 0.70, 0.41); II 3.28 (1.04, 1.17, 0.68, 0.39), III 2.72 (0.92, 0.91, 0.58, 0.31), IV 3.20 (1.02, 1.12, 0.75, 0.31). Leg formula: 1243. Opisthosoma oval. Dorsum and venter pale. Spinnerets short and yellowish brown.

Epigyne (Figs 1 View Figure 1 , 2 B, C View Figure 2 ). Copulatory openings somewhat 9 - shaped and facing away from each other, separated by about 6 times their width. Copulatory ducts membranous, gently curved, longer than spermathecal length. Spermatheca bifurcate, spermathecal heads spherical. Fertilization ducts thin, curved, directed laterally.

Male unknown.

Distribution.

Known only from the type locality, Yunnan, China (Fig. 15 View Figure 15 ).