Oilinyphia hengji, Zhao, Qingyuan & Li, Shuqiang, 2014

Zhao, Qingyuan & Li, Shuqiang, 2014, A survey of linyphiid spiders from Xishuangbanna, Yunnan Province, China (Araneae, Linyphiidae), ZooKeys 460, pp. 1-181 : 32

Taxon classification Animalia Araneae Linyphiidae

Oilinyphia hengji sp. n. Figs 69, 70, 71, 72

Types.

Holotype ♂: CHINA, Yunnan: Menglun Town: Xishuangbanna Nature Reserve, 21°54.725'N, 101°13.261'E, elevation ca 734 m, 8.08.2007, primary tropical seasonal rain forest, fogging. Paratype 1♀, Lvshilin, 21°54.617'N, 101°16.843'E, elevation ca 738 m, 8.08.2011, primary tropical seasonal rain forest, fogging.

Etymology.

The name comes from the Chinese Pinyin ‘héng jĭ’, which means ‘ridge’, referring to the transversal ridges on the dorsum of its abdomen; noun in apposition.

Diagnosis.

This species is similar to O. jadbounorum Ponksee & Tanikawa, 2010 from Thailand by the body shape, conformation of palp and epigyne, but differs from sibling species by wide tip of the embolus (Fig. 69A) (pointed in Oilinyphia jadbounorum ( Ponksee and Tanikawa 2010: fig. 3)). Females of two species differ by the shape of the median extension of the ventral fig tapering in Oilinyphia jadbounorum ( Ponksee and Tanikawa 2010: fig. 2) and almost rectangular in the new species (Fig. 71A). The new species clearly differs from the generotype by having TmIV, 2 cheliceral teeth instead of 3, small papillae on the abdomen and by the shape of the copulatory organs.

Description.

Male (holotype). Total length: 1.00. Carapace 0.53 long, 0.48 wide, reddish brown. Sternum 0.28 long, 0.35 wide, heart-shaped, sparsely clothed by small tubercles. Clypeus 0.08 high. Chelicerae promargin with 2 teeth, retromargin with 0 teeth. Eye sizes and interdistances: AME 0.08, ALE 0.10, PME 0.08, PLE 0.07, AME-AME/AME 0.06, PME-PME/PME 0.75, AME-ALE/ALE 0.25, PME-PLE/PLE 0.29, coxae IV separated by 1.41 their diameters. Length of legs: I 1.72 (0.44, 0.16, 0.40, 0.41, 0.31), II 1.87 (0.48, 0.18, 0.45, 0.42, 0.34), III 1.31 (0.22, 0.12, 0.34, 0.33, 0.30), IV 1.72 (0.45, 0.15, 0.44, 0.38, 0.30). Leg formula: I-II-IV-III. TmI 0.32, TmIV 0.24. Abdomen dark green, cone-like with attenuated posterior tip, adorned with ridges and papillae. Palp: tibia with one retrolateral trichobothrium and without apophyses; paracymbium broad at base, ‘C’ -shaped (Figs 69B, 72B); protegulum somewhat triangular (Fig. 77B); distal suprategular apophysis thorn-like (Fig. 69 A–B); median membrane slender and short, with attenuated tip (Fig. 69 C–D); lamella with three apophyses, the distal one long, with a blunt end; the mesal one short, with pointed apex; the proximal one long and straight; embolus short, broad, slightly curved (Figs 69A, 72A).

Female (paratype). Total length: 1.38. Carapace 0.56 long, 0.39 wide, same coloration as in male. Sternum 0.31 long, 0.35 wide. Clypeus 0.09 high. Chelicerae promargin with 3 teeth, retromargin with 3 teeth. Eye sizes and interdistances: AME 0.05, ALE 0.05, PME 0.05, PLE 0.05, AME-AME/AME 0.20, PME-PME/PME 0.50, AME-ALE/ALE 0.60, PME-PLE/PLE 0.56, coxae IV separated by 1.36 times their width. Length of legs: I 1.90 (0.50, 0.15, 0.45, 0.45, 0.35), II 2.05 (0.50, 0.19, 0.50, 0.48, 0.35), III 1.67 (0.47, 0.16, 0.34, 0.38, 0.32), IV 1.63 (0.47, 0.16, 0.41, 0.34, 0.25). Leg formula: IV-I-II-III. TmI 0.28, TmIV 0.59. Abdomen same coloration and pattern as male. Epigyne: ventral fig wide, extended mesally with a truncated end (Fig. 71A); copulatory ducts short and simple; spermathecae oval, separated by less than their diameter (Fig. 71C); fertilization ducts short, turning upwards (Fig. 71B).

Distribution.

Known only from type localities.

Genus Paikiniana Eskov, 1992

Paikiniana : Eskov 1992: 164. Type species Cornicularia bella Paik, 1978 from Korea.