Lysiteles cibagou Wang & Mi, 2024

Wang, Cheng, Gan, Jiahui & Mi, Xiaoqi, 2024, Two new species of Lysiteles Simon, 1895 from Cibagou National Nature Reserve, Xizang, China (Araneae, Thomisidae), Biodiversity Data Journal 12, pp. 120347-120347 : 120347

Lysiteles cibagou Wang & Mi sp. nov.

Materials

Type status: Holotype. Occurrence: individualID: TRU-TD-XZ-001; sex: male; occurrenceID: 861463EB-E43B-5639-A89A-F2C13B346F14; Taxon: scientificName: Lysiteles cibagou sp. nov.; Location : country: China; stateProvince: Xizang Autonomous Region ; county: Zayu ; locality: Cibagou National Nature Reserve ; verbatimElevation: 2570 m; verbatimLatitude: 28°41.43′N; verbatimLongitude: 97°2.86′E; Identification: identifiedBy: Cheng Wang; Event: samplingProtocol: beating shrubs; year: 2023; month: June; day: 26 Type status: Paratype. Occurrence: individualID: TRU-TD-XZ-002-008; sex: 2males, 5 females; occurrenceID: E6373605-08CF-5AB2-BC5B-042C5F7F5DCD; Taxon: scientificName: Lysiteles cibagou sp. nov.; Location : country: China; stateProvince: Xizang Autonomous Region ; county: Zayu ; locality: Cibagou National Nature Reserve ; verbatimElevation: 2570 m; verbatimLatitude: 28°41.43′N; verbatimLongitude: 97°2.86′E; Identification: identifiedBy: Cheng Wang; Event: samplingProtocol: beating shrubs; year: 2023; month: June; day: 26

Description

Male (holotype, TRU-TD-XZ-001). Total length 2.93. Carapace 1.35 long, 1.23 wide; Abdomen 1.61 long, 1.17 wide. Eye sizes and inter-distances: AME 0.11, ALE 0.21, PME 0.06, PLE 0.16; AME-AME 0.13, AME-ALE 0.11, PME-PME 0.21, PME-PLE 0.25; MOA 0.30 long, front width 0.34, back width 0.38. Measurements of legs: I 5.63 (1.75, 0.55, 1.45, 1.18, 0.70), II 5.66 (1.70, 0.58, 1.48, 1.20, 0.70), III 3.74 (1.18, 0.43, 0.95, 0.73, 0.45), IV 3.90 (1.25, 0.40, 1.00, 0.80, 0.45). Carapace (Fig. 2 E) red-brown to black, with three oblique or longitudinal dark stripes posteriorly on cephalon, and pairs of indistinct, lateral dark stripes on thorax. Chelicerae (Fig. 2 F) red-brown. Endites (Fig. 2 F) pale yellow, with pale, inner-distal areas bearding dense brown setae. Labium (Fig. 2 F) brown to dark. Sternum (Fig. 2 F) dark brown, almost as long as wide, with re-curved anterior margin and gradually narrowed postero-medially. Legs pale to yellow, with sparse dark spots. Abdomen (Fig. 2 E, F) oval, dorsum mahogany to dark, with prominent, median dark marking; venter brown to dark brown, with centre, longitudinal dark band bearing five pairs of dots. Palp (Fig. 1 A, B): tibia slightly wider than long; ventral tibial apophysis (VTA) short, prolaterally curved into inverted C-shape; retrolateral tibial apophysis (RTA) broad and flat, acutely narrowed distally into spiny portion; cymbium longer than wide, tapered distally; bulb flat, with sperm duct extending along the submargin; embolus (E) rises at antero-apical portion of bulb, postero-retrolaterally extending, spiralled into ca. two circles, with pointed tip directed dorsally.

Female (paratype, TRU-TD-XZ-004). Total length 3.02. Carapace 1.23 long, 1.16 wide; Abdomen 1.81 long, 1.55 wide. Eye sizes and inter-distances: AME 0.12, ALE 0.21, PME 0.06, PLE 0.15; AME-AME 0.14, AME-ALE 0.11, PME-PME 0.23, PME-PLE 0.27; MOA 0.29 long, front width 0.34, back width 0.38. Measurements of legs: I 4.16 (1.28, 0.50, 1.00, 0.80, 0.58), II 4.23 (1.33, 0.50, 1.03, 0.83, 0.55), III 2.94 (0.93, 0.38, 0.70, 0.55, 0.38), IV 3.11 (1.00, 0.38, 0.75, 0.60, 0.38). Habitus (Fig. 2 G, H) similar to that of male. Epigyne (Fig. 2 A-D): wider than long; with broad, labiate, anterior transversal sclerotised plate (TSP) almost half the epigynal width; copulatory openings beneath the base of transversal sclerotised plate, close to each other; copulatory ducts (CD) thick, curved into arc-shape at anterior half and nearly half the spermathecal diameter in width; spermathecae (S) almost spherical, separated from each other by half their diameter; fertilisation ducts (FD) lamellar, originating from the inner-base of spermathecae.

Diagnosis

Lysiteles cibagou sp. nov. resembles that of L. conflatus Tang, Yin, Peng, Ubick & Griswold, 2008 in having similar copulatory organs, especially the postero-retrolaterally extended embolus, broad transversal sclerotised plate and thick copulatory duct, but it can be easily distinguished by the following: 1) the embolus is spiralled (Fig. 1 A, B), versus non-spiralled in L. conflatus ( Tang et al. 2008: fig. 4e, j); 2) the copulatory ducts are curved into an arc-shape at anterior half (Fig. 2 B-D), versus curved at proximal and followed by straight, downward extending portions in L. conflatus ( Tang et al. 2008: fig. 4i, I); 3) the thorax has several pairs of lateral dark stripes (Fig. 2 E, G), versus has alternate dark brown and dark yellow stripes in L. conflatus ( Tang et al. 2008: fig. 4a-c).

Etymology

The species name is derived from the name of the type locality; noun in apposition.

Distribution

Known only from the type locality in Xizang, China (Fig. 5 ).

Figures

Figure 1. Male palp of Lysiteles cibagou sp. nov., holotype (TRU-TD-XZ- 001). A ventral view; B retrolateral view. Scale bars = 0.1 mm.

Figure 2. Male holotype (TRU-TD-XZ- 001) and female paratype (TRU-TD-XZ- 004) of Lysiteles cibagou sp. nov.; A, B epigyne, ventral view; C, D vulva, dorsal view; E holotype habitus, dorsal view; F ditto, ventral view; G female paratype habitus, dorsal view; H ditto, ventral view. Scale bars = (A-D) 0.1 mm; (E-H) 0.5 mm.

Figure 5. Distributional records of the Lysiteles spp.