Sinoderces xueae 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/AC29E243-6C39-45BD-A604-01533D919603
taxon LSID	lsid:zoobank.org:act:AC29E243-6C39-45BD-A604-01533D919603
treatment provided by	ZooKeys by Pensoft
scientific name	Sinoderces xueae Li & Li
status	sp. nov.

Treatment

Sinoderces xueae Li & Li View in CoL sp. nov. Figs 9 View Figure 9 , 10 View Figure 10 , 21 View Figure 21 , 22 View Figure 22

Types.

Holotype: ♂, Limu Mountain Town, Hainan Province, China. 19°12.002'N, 109°43.710'E, 591 m, 25.III.2012, Chen Z. leg. Paratype: 1♀, same data as holotype.

Etymology.

This name is in honor of Wenjing Xue, a good friend of the first author of the paper who has been helpful to his study and life. The case is feminine and genitive.

Diagnosis.

Sinoderces xueae sp. nov. resembles S. taichi sp. nov. in having a similarly shaped conductor and embolus. However, the males can be distinguished by the following: five spines on the distal part of the palpal cymbium, vs. six in S. taichi sp. nov; the slightly sigmoid embolus and short conductor ( Fig. 9 View Figure 9 ) vs. a coiled embolus and long conductor in S. taichi sp. nov. The margin of the epigyne of S. xueae sp. nov. is thin ( Fig. 10B View Figure 10 ) whereas in S. taichi sp. nov. thick ( Fig. 12B View Figure 12 ).

Description.

Male (holotype). Total length 1.94; carapace 0.66 long, 0.72 wide; abdomen 1.28 long, 0.59 wide. Carapace round, brown, with dark brown lateral margins and one wide median brown band, clypeus yellow and chelicerae dark brown ( Fig. 10E View Figure 10 ). Cheliceral promargin with one tooth, followed by a lamina, retromargin with a small tooth ( Fig. 21E View Figure 21 ). Labium brown. Sternum brown ( Fig. 10E View Figure 10 ). Legs yellow, joints darker. Legs measurements: I missing, II 6.26 (1.35, 0.25, 2.13, 1.80, 0.73), III 4.93 (1.40, 0.25, 1.43, 1.25, 0.60), IV 7.26 (2.00, 0.25, 2.25, 1.93, 0.83,). Abdomen elongated, with black lines posteriorly, black anterior lines brownish and expanded medially, and splotches ventrally sp. Spinnerets brown.

Male palp ( Fig. 9 A–D View Figure 9 ): The overall color is yellow, bulb dark yellow, ovate; embolus arising retrolaterally and distally from the bulb, slightly sigmoid. Conductor arising prolaterally and proximally from the bulb. Embolus and conductor slightly separated (distance less than a diameter of the bulb). Tibia with five spines distally ( Fig. 9B View Figure 9 ). Femur and trochanter yellow with few hairs.

Female (one of the paratypes). Females are darker than males ( Fig. 10C, D View Figure 10 ). Total length 2.08; carapace 0.63 long, 0.63 wide; abdomen 1.45 long, 0.53 wide. Carapace round, brown. Clypeus and chelicerae dark brown ( Fig. 10C View Figure 10 ). Endites dark yellow. Labium and sternum brown. Legs light yellow, joints darker. Leg measurements: I 4.86 (1.20, 0.20, 1.50, 1.24, 0.72), II 3.89 (1.03, 0.20, 1.16, 0.97, 0.53), III 4.95 (1.25, 0.20, 1.44, 1.28, 0.78), IV3.36 (0.91, 0.20, 0.94, 0.78, 0.53). Abdomen elongated, dorsum wrinkled, with black rings, ventrum with large black spots ( Fig. 10C, D View Figure 10 ). Spinnerets black.

Epigyne ( Fig. 10A, B View Figure 10 ): Some bristles present above the epigyne ( Fig. 10B View Figure 10 ). Internal genitalia with two pairs of spermathecae, curved, the anterior pair is longer than the posterior pair ( Fig. 10A View Figure 10 ). The whole entire spermathecal structure is symmetrical.

Distribution.

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

Natural history.

Collected in pristine forests.