Paraceto orientalis ( Schenkel, 1936 ) Zhang, Feng, 2017

Zhang, Feng, 2017, Description of Paraceto gen. n. and a relimitation of the genus Cetonana (Araneae: Trachelidae), Zootaxa 4320 (2), pp. 225-244 : 242-243

Paraceto orientalis ( Schenkel, 1936) comb. n.

For complete bibliography see World Spider Catalog (2017). Fig. 11

Material examined. CHINA: Sichuan Province: Jiuzhaigou County, Wujiao Country , Baima Tibetan Village (33.035395°N, 104.204051°E), 1809m a.s.l., 23 August 2014, leg. Shanjie Zha, 1♀ ( MHBU).

Diagnosis. The species resembles the type species of the genus; see the diagnosis above in P. spiralis sp. n.

Redescription. Female ( Figs. 11A–B ): body 4.87 long; carapace 2.23 long, 1.98 wide; abdomen 2.64 long, 2.08 wide. Body entirely covered with numerous long slender pale grey hairs. Carapace dark brown, ovoid in dorsal view, highest between fovea and PER, densely covered with relatively larger granulations (compared to P. spiralis ). CRW 1.30, 0.66 times carapace width. Fovea indistinct.

AER and PER slightly recurved in dorsal view ( Fig. 11C ). Eye diameters: AME 0.15, ALE 0.16, PME 0.15, PLE 0.15. Eye interdistances: AME–AME 0.12, AME–ALE 0.04, PME–PME 0.21, PME–PLE 0.16, ALE–PLE 0.12. MOA 0.36 long, anterior width 0.39, posterior width 0.48. PERW 0.93, 0.72 times CRW. Clypeus height 0.17, wider than diameter of AME. Chilum triangular, sclerotised and brown, with median indentation ( Fig. 11D ).

Chelicerae ( Fig. 11D ) dark brown, covered with granulations carrying similar hairs to carapace, cheliceral boss pronounced; with three promarginal and two retromarginal teeth. Endites ( Fig. 11B ) yellow-brown, apex round; labium brown, slightly wider than long. Sternum ( Fig. 11B ) yellow-brown, shield-shaped, with sharp precoxal triangles and blunt intercoxal sclerites.

Legs without cusps ( Fig. 11E ). Anterior legs light yellow brown and posterior legs more lighter colour. Measurements of legs: leg I 5.91 (1.84, 0.77, 1.40, 1.14, 0.76), II 5.78 (1.75, 0.76, 1.36, 1.20, 0.71), III 4.52 (1.34, 0.59, 0.94, 1.15, 0.50), IV 6.41 (1.82, 0.71, 1.46, 1.74, 0.68). Leg formula: 4123. Abdomen oval, dorsum dark grey, medially pale grey, with indistinct chevrons posteriorly and two pairs of brown sigilla anteromedially; dorsal scutum absent ( Fig. 11A ). Venter pale grey, medially pale grey and with two lines of sclerotized spots ( Fig. 11B ).

Epigyne ( Fig. 11G ): epigynal plate wider than long, poorly sclerotized; copulatory openings situated laterally, large and oval, posterior edge of copulatory openings significantly higher than posterior edge of ST2; hood absent. Vulva ( Fig. 11H ): copulatory ducts long, anteriorly wide and posteriorly narrower, coiled three times before entering ST2; ST2 spherical, close to each other; connecting ducts slender, coiling around anterior part of copulatory ducts; ST1 spherical and small, close to each other, connected to basally weakly sclerotized FD.

Description of male: see Kim & Lee (2008: 1876) and Seo (2012: 142).

Distribution. China (Gansu and Sichuan Provinces), Korea ( Fig. 12 ).

Figures

FIGURE 11. Paraceto orientalis (Schenkel, 1936) comb. n., female, A. habitus, dorsal view; B. same, ventral view; C. ocular area, dorsal view; D. cephalothorax, frontal view; E. right legs I and II, retrolateral view; F. habitus, lateral view; G. epigyne, ventral view; H. vulva, dorsal view.

FIGURE 12. Distribution of Paraceto gen. n. and Cetonana species of China.