Sinoderces saraburiensis Li & Li

Bai, Zilong, Li, Fengyuan & Li, Shuqiang, 2019, Ten new species of the spider genus Sinoderces Li & Li, 2017 from China, Laos and Thailand (Araneae, Psilodercidae), ZooKeys 886, pp. 79-111 : 79

publication ID	https://dx.doi.org/10.3897/zookeys.886.39212
publication LSID	lsid:zoobank.org:pub:FF4F3062-D283-4B5D-80C3-AEFC6361CE39
persistent identifier	https://treatment.plazi.org/id/10E048EC-F9DC-5BA4-85F5-55CD07FB5080
treatment provided by	ZooKeys by Pensoft
scientific name	Sinoderces saraburiensis Li & Li
status	sp. nov.

Treatment

Sinoderces saraburiensis Li & Li sp. nov. Figs 17 View Figure 17 , 18 View Figure 18 , 21 View Figure 21 , 22 View Figure 22

Types.

Holotype: ♂, Tham Bo Pla Cave, Kaeng Koi District, Song Khon Village, Saraburi Province, Thailand, 14°39.625'N, 100°58.115'E, 73 m, 20. X. 2014, Zhao H., Li Y. and Chen Z. leg.

Etymology.

The specific name is derived from the type locality; adjective.

Diagnosis.

Sinoderces saraburiensis sp. nov. can be distinguished from all other known species by the swan-like shape of the palp ( Fig. 17 View Figure 17 ). Embolus heavily sclerotized. Palpal tibia with a slight bump. No conductor.

Description.

Male (holotype). Total length 1.82; carapace 0.65 long, 0.72 wide; abdomen 1.18 long, 0.56 wide. Carapace round, light yellow, with dark lateral margins. Anterior margin of cephalic region distinctly elevated. Clypeus yellow. Chelicerae light yellow. Cheliceral promargin with one tooth, connected to a lamina; retromargin toothless ( Fig. 21I View Figure 21 ). Endites dark yellow. Labium yellow. Sternum dark yellow. Legs light yellow. Leg measurements: I 13.61 (3.75, 0.31, 4.05, 4.15, 1.35), II 9.49 (2.50, 0.31, 2.81, 2.78, 1.09,). III 6.75 (1.90, 0.25, 2.20, 1.80, 0.60), IV 9.87 (2.72, 0.25, 3.00, 2.81, 1.09). The color of the abdomen gradually darkens posteriorly.

Male palp ( Fig. 17 View Figure 17 ): Bulb pale yellow, ovate. Embolus shaped like a swan; the top of tarsus darker than the rest. Embolus is grossly extended and twisted apically. No conductor. Tibia with a slight bump densely covered by bristles. Femur with sparse hairs.

Distribution.

Known only from the type locality ( Fig. 22 View Figure 22 ).

Natural history.

Collected in a cave at an elevation of 73 m.