Oedothorax biantu, 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

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scientific name

Oedothorax biantu

sp. n.

Taxon classification Animalia Araneae Linyphiidae

Oedothorax biantu  sp. n. Figs 67, 68


Holotype ♀: CHINA, Yunnan: Menglun Town: Xishuangbanna Tropical Botanical Garden, 21°54.380'N, 101°16.518'E, elevation ca 627 m, 22.11.2009, bamboo plantation, fogging.


This name comes from the Chinese Pinyin ‘biān tū’, meaning 'knobs on each side’, referring to the prominence on each side of the ventral fig of epigyne; noun in apposition.


This species is diagnosed by short copulatory ducts (Fig. 67A), position of spermathecae (Fig. 67C); it differs from congeners by tibial spination (1-1-1-1 in new species and 2-2-1-1 in other), the knob on each side of ventral fig and the long slits on the ventral fig (Fig. 67A).


Female (holotype). Total length: 1.45. Carapace 0.68 long, 0.56 wide, dark brown. Sternum 0.31 long, 0.35 wide. Clypeus 0.10 high. Chelicerae promargin with 3 teeth, retromargin with 3 teeth. Eye sizes and interdistances: AME 0.04, ALE 0.06, PME 0.05, PLE 0.06, AME-AME/AME 0.75, PME-PME/PME 0.60, AME-ALE/ALE 0.33, PME-PLE/PLE 0.67, coxae IV separated by 1.36 times their width. Length of legs: I 1.57 (0.44, 0.19, 0.38, 0.31, 0.25), II 1.50 (0.43, 0.19, 0.35, 0.28, 0.25), III 1.32 (0.34, 0.16, 0.34, 0.25, 0.23), IV 1.63 (0.47, 0.16, 0.41, 0.34, 0.25). Leg formula: IV-I-II-III. TmI 0.59, TmIV 0.59. Tibial spine formula 1-1-1-1 Abdomen greenish grey. Epigyne: ventral fig broad and slightly swollen, with a wavy posterior rim and one small knob on each side (Figs 67A, 68A); copulatory ducts complex (Figs 67C, 68B); spermathecae oval, separated by 2.00 times their diameter; fertilization ducts short (Fig. 67B).

Male. Unknown.


Known only from type locality.

Genus Oilinyphia  Ono & Saito, 1989

Oilinyphia  : Ono and Saito 1989: 232. Type species Oilinyphia peculiaris  Ono & Saito, 1989 from Japan.