Shinobius cona Wang & Mu & Zhang & Marusik & Zhang 2024, sp. nov.
Creators: name: Wang, Lu-Yu
name: Mu, Yan-Nan
name: Zhang, Feng
name: Marusik, Yuri M.
name: Zhang, Zhi-Sheng
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Trechaleidae
Shinobius
Shinobius cona

description: Shinobius cona sp. nov.
Figs 1, 2, 3, 5 错那侵蛛
Type material.
Holotype ♂ (SWUC - T-TR- 01-01): China, Xizang, Cona Co., Mama Township, Lebugou; 27 ° 50 ′ 59 ″ N, 91 ° 46 ′ 39 ″ E, elev. 2280 m; 4. viii. 2020; L. Y. Wang, T. Yuan and Y. M. Hou leg.; Paratype: 1 ♀ (SWUC - T-TR- 01-02), same data as holotype.
Etymology.
The epithet refers to the type locality.
Diagnosis.
The new species is similar to S. orientalis (Yaginuma, 1967) (Sierwald 1993: figs 20–22), but differs by having no strong spines on the male palpal tibia and cymbium (vs. present), a median apophysis with one branch (vs. two); a roundly bent and not meandering spermophor (vs. meandering) as well by having the septum of the epigyne wider posteriorly (vs. anteriorly), and slit-like copulatory openings (CO) (vs. round, cf. Fig. 2 C and Fig. 4 B).
Description.
Male holotype (Fig. 1 A) total length 5.75. Carapace 2.85 long, 2.37 wide, cephalic part 1.8 times thinner than thoracic; opisthosoma 2.83 long, 2.59 wide. Carapace yellow brown, with distinct pattern: cephalic part behind posterior eye row light brown, anterior part of thoracic part with 2 pairs of light, and submarinal spots, larger anterior and smaller posterior; medially with thin light stripe and 2 thin, and light marginal stripes against coxa III and IV. Cervical groove indistinct, radial furrows distinct. Eye sizes and interdistances: AME 0.12, ALE 0.12, PME 0.18, PLE 0.21; AME – AME 0.13, AME – ALE 0.08, PME – PME 0.14, PME – PLE 0.23, Clypeus height 0.25. Legs yellow brown, with black pigmentation. Tibia I with four pairs of ventral spines; metatarsus I with 3 pairs of ventral spines. Tibia II with 3 pairs of ventral spines; metatarsus II with 3 pairs of ventral spines. Leg measurements: I 10.31 (2.90, 3.52, 2.50, 1.39); II 10.71 (3.03, 3.68, 2.67, 1.33); III 9.14 (2.41, 3.39, 2.21, 1.13); IV 10.84 (2.87, 3.64, 2.93, 1.40). Opisthosoma oval. Dorsum yellow brown, with black brown markings. Venter yellowish-brown.
Palp (Figs 2 A, B, 3 A – E). Retrolateral tibial edge hood-shaped. Subtegulum large, located on baso-prolateral side of bulb. Tegulum with slanting and meandering thin spermophor. Median apophysis short, medially wide, ventrally with coracoid tip, dorsally with a groove. Conductor digitiform (longer than wide), curving and membranous. Embolus arc-shaped, bent at about right angle, with oval-shaped base (Eb), tip ends in median apophysis groove dorsally.
Female paratype (Fig. 1 B – I) total length 5.78. Carapace 2.98 long, 2.55 wide, cephalic part 1.6 times thinner than maximal width of carapace; opisthosoma 3.03 long, 2.41 wide. Eye sizes and interdistances: AME 0.16, ALE 0.15, PME 0.24, PLE 0.23; AME – AME 0.12, AME – ALE 0.09, PME – PME 0.14, PME – PLE 0.27. Carapace pattern as in male. Clypeus height 0.15. Leg measurements: I 9.55 (2.71, 3.37, 2.29, 1.18); II 9.70 (2.80, 3.34, 2.39, 1.17); III 8.59 (2.50, 2.88, 2.19, 1.02); IV 10.54 (2.92, 3.48, 2.84, 1.30). Sternum yellowish with 3 pairs of dark round submarginal spots (Fig. 3 H)
Epigyne (Figs 2 C, D, 3 F, G). Epigynal plate 1.2 times wider than long; fovea (atrium) almost totally covered with septum, 1.2 times longer than wide, anterior part of plate 2 times thinner than posterior; copulatory openings (CO) slit-like; Endogyne with 2 pairs of receptacles, posterior receptacles (Pr) crooked; anterior receptacles (Ar) cylindrical, with the oval head covered with sparse glandular pores; Fertilization ducts arc-shaped.
Natural history.
Forms a funnel-shaped web on the moss. Female was found with egg-cocoons attached to spinnerets.
Distribution.
Known only from the type locality, Xizang, China (Fig. 5).
description: Published as part of Wang, Lu-Yu, Mu, Yan-Nan, Zhang, Feng, Marusik, Yuri M. & Zhang, Zhi-Sheng, 2024, First record of the spider family Trechaleidae Simon, 1890 (Araneae) from China, pp. 189-195 in ZooKeys 1203 on pages 189-195, DOI: 10.3897/zookeys.1203.124808