Stephanopis qiong Liu & Yao, 2023

Li, Cong-zheng, Yao, Yan-bin, Xiao, Yong-hong & Liu, Ke-ke, 2023, Two new thomisid species (Arachnida, Araneae, Thomisidae) from China and Vietnam, with the first descriptions of the males of Borboropactus longidens Tang & Li, 2010 and Stephanopis xiangzhouica Liu, 2022, ZooKeys 1159, pp. 169-187 : 169

Stephanopis qiong Liu & Yao sp. nov.

Figs 5 , 6

Type material.

Holotype ♀: China, Hainan, Ledong County, Jianfengling National Natural Reserve, Mingfenggu Scenic Spot, 18°44'25.87"N, 108°50'47.83"E, 4 April 2021, Yunhu Mo leg. (Tho-292, ASM-JGSU).

Etymology.

The specific name refers to the Chinese abbreviation for Hainan Province; noun in apposition.

Diagnosis.

The female of this new species resembles Stephanopis xiangzhouica Liu, 2022 (see Liu et al. 2022c: 64, fig. A, B) in having the copulatory openings hidden by a transverse ridge, but can be distinguished by the inverted heart-shaped atrium (vs. oval) and the tube-shaped spermathecae separated by nearly as long as their width (vs. the oval spermathecae separated by their half width) (Fig. 5G, H ).

Description.

Female (holotype). Habitus as in Figs 5A, B , 6C, D . Total length 5.46, prosoma (Fig. 5A, B ) length 2.32, width 2.86, anteriorly narrowed to 0.43 × its maximum width, covered with numerous strong, short, radially distributed peg-like setae and dense short plumose setae, with three rows of short, strong setae along the midline. Eye diameters (Fig. 5C ): AME 0.05, ALE 0.11, PME 0.08, PLE 0.09; interdistances: AME-AME, 0.10, AME-ALE, 0.12, PME-PME, 0.25, PME-PLE, 0.14, AME-PME, 0.36, AME-PLE, 0.39, ALE-ALE, 0.37, PLE-PLE 0.67, ALE-PLE, 0.16. MOA 0.44 long, front width 0.19, back width 0.41. Chelicerae (Fig. 5D, E ) with three promarginal and two retromarginal teeth, and a small denticle in-between. Endites (Fig. 5B ) nearly quadrilateral, longer than wide. Labium (Fig. 5B ) rectangular, wider than long, anteriorly with strong setae. Sternum oval, anteriorly flattened, as long as wide, covered by very dense setae. Legs measurements (Fig. 5A, B, F ): I 9.17 (3.09, 1.53, 2.22, 1.55, 0.78); II 6.86 (1.97, 1.14, 2.03, 1.28, 0.44); III 4.67 (1.39, 0.75, 1.31, 0.67, 0.55); IV 5.85 (1.69, 0.73, 1.21, 1.73, 0.49); spination (Fig. 5A, B, F ): I Ti: d1, v8; Mt: d1, r1, v8; II Ti: d2, v8; Mt: d2, v8; III Pa: d1; cusps: I Fe: 5; Pa: 2; Ti: 3; II Fe: 9; Pa: 3; Ti: 3; IV Fe: 2. Opisthosoma (Fig. 5A, B ) length 3.14, width 3.87, pentagonal with a notch posteromedially; dorsum covered with sparse peg-like setae; venter with numerous plumose setae medially.

Colouration (Fig. 5A, B ). Prosoma reddish brown, with radial, irregular, dark brown mottled markings in the surface. Chelicerae, endites, labium, and sternum yellow-brown. Legs yellow to yellow-brown. Opisthosoma white to yellow, with numerous irregular guanine spots; venter yellow, with a few guanine spots on lateral parts.

Epigyne (Fig. 5G, H ). Epigyne oval, wider than long. Atrium (At) large, inverted heart-shaped, covering 2/3 of epigynal field. Copulatory openings (CO) invisible, hidden by a transverse ridge (TR). Copulatory ducts very short, touching. Membranous sacs (MS) transparent, located anteriorly, covering 2/3 of epigynal plate, slightly separated. Glandular appendages (GA) nearly spherical, almost as long as 1/2 width of spermatheca. Spermathecae (Sp) tube-shaped, slightly separated by less spermathecal width. Fertilisation ducts (FD) slightly less than the length of spermatheca, directed anterolaterally.

Male. Unknown.

Distribution.

Known only from the type locality in Hainan Province, China (Fig. 10 ).

Figures

Figure 5. Stephanopis qiong sp. nov., female holotype, preserved A habitus, dorsal view B same, ventral view C eyes, dorsal view D chelicera, ventrolateral view E same, dorsolateral view F leg I, dorso-prolateral view G epigyne, dorsal view H same, ventral view. Abbreviations: At - atrium, CO - copulatory opening, FD - fertilisation duct, GA - glandular appendage, MS - membranous sac, Sp - spermatheca, TR - transverse ridge of copulatory openings. Scale bars: 0.5 mm (A, B); 0.2 mm (C); 0.1 mm (D-H).

Figure 6. Photographs of living specimens from China A, B Stephanopis qiong sp. nov., female.

Figure 10. Records of Borboropactus longidens Tang & Li, 2010, Pharta xizang sp. nov., Stephanopis qiong sp. nov. and S. xiangzhouica Liu, 2022 from Asia.