Sinoderces khanensis 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/697B62E8-0DFC-49AA-8DD8-A21FE6F35692
taxon LSID	lsid:zoobank.org:act:697B62E8-0DFC-49AA-8DD8-A21FE6F35692
treatment provided by	ZooKeys by Pensoft
scientific name	Sinoderces khanensis Li & Li
status	sp. nov.

Treatment

Sinoderces khanensis Li & Li View in CoL sp. nov. Figs 1 View Figure 1 , 2 View Figure 2 , 21 View Figure 21 , 22 View Figure 22

Types.

Holotype: ♂, Khan Cave, 5.35 km west of Viengkieo Village, Vang Vieng District, Vientiane Province, Laos, 18°55.592'N, 102°23.718'E, 270 m, 01.XI.2012, Yao Z. leg. Paratypes: 1♂2♀, same data as holotype.

Etymology.

The specific name refers to the cave where type material was collected; adjective.

Diagnosis.

Male Sinoderces khanensis sp. nov. can be recognized by the overall slender configuration of the palp, with two spines on the cymbium ( Fig. 1B View Figure 1 ). The male clypeus has two apophyses ( Fig. 2E View Figure 2 ). In the female, the spermathecae are extraordinarily elongated and shaped like the front of headband worn by the Chinese mythological Monkey King, Sun Wukong-two blunt ends that meet and curl upward ( Fig. 2A View Figure 2 ).

Description.

Male (holotype). Total length 2.33; carapace 1.02 long, 0.75 wide; abdomen 1.28 long, 0.70 wide. Clypeus light brown, with two apophyses. Carapace round, light yellow, with brown lateral margins and a wide median brown band, which is noticeably broader in the mid-section ( Fig. 2E View Figure 2 ). Cheliceral promargin with one tooth, connected to a lamina, retromargin with a small tooth ( Fig. 21A View Figure 21 ). Labium light brown. Sternum brown. Legs brownish yellow, with dark brown joints. Leg measurements: I missing, II 7.82 (2.20, 0.20, 2.33, 2.17, 0.92), III 5.54 (1.60, 0.20, 1.80, 1.52, 0.42), IV 8.52 (2.56, 0.20, 2.64, 2.28, 0.84). Abdomen elongated, with small black stripes, the color tone darkens progressively from front to back ( Fig. 2E View Figure 2 ). Spinnerets black.

Male palp ( Fig. 1 A–D View Figure 1 ): The overall color is pale yellow. Bulb light yellow, conical. Needle-like embolus arising distally from bulb, straight; no conductor. Tibia with numerous long setae and two conspicuous spines. Long femur with sparse hairs.

Female (one of the paratypes). Size and color similar to male ( Fig. 2C, D View Figure 2 ). Total length 1.92; carapace 0.63 long, 0.72 wide; abdomen 1.29 long, 0.76 wide. Clypeus dark brown. Carapace round, darker than that of the male. Labium and sternum dark brown, a white spot in the middle of sternum. Legs brownish yellow, with darkish brown joints. Leg measurements: I missing, II 6.06 (1.56, 0.19, 1.94, 1.56, 0.81), III 4.71 (1.25, 0.19, 1.38, 1.20, 0.69), IV 7.14 (2.03, 0.20, 2.19, 1.84, 0.88). Abdomen elongated, dorsum color tone darkens progressively towards the posterior end; and ventrum with numerous white spots and other markings. Spinnerets dark brown.

Epigyne ( Fig. 2A, B View Figure 2 ): Shaped like a mouth with a thick lip ( Fig. 2B View Figure 2 ). It has two pairs of spermathecae: a pair of small and spherical spermathecae connected to a pair of highly elongated and looped spermathecae. The spermathecae conjure an image of the headband worn by the Chinese mythological Monkey King with two blunt ends that meet and curl upward ( Fig. 2A View Figure 2 ).

Distribution.

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

Natural history.

Collected at a cave’s entrance at an elevation of 270 m.