Vittatus bian, 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 : 43-44

Taxon classification Animalia Araneae Linyphiidae

Vittatus bian sp. n. Figs 104, 105, 106, 107

Types.

Holotype ♂: CHINA, Yunnan: Menglun Town: Xishuangbanna Tropical Botanical Garden, 21°57.809'N, 101°12.173'E, elevation ca 888 m, 4.08.2007, secondary tropical montane evergreen broad-leaved forest, fogging. Paratypes 3♀, 21°54.767'N, 101°11.431'E, elevation ca 880 m, 6.08.2007, secondary tropical montane evergreen broad-leaved forest, fogging; 1♀, 21°54.646'N, 101°16.257'E, elevation ca 572 m, 16.07.2007, rubber tree plantation, fogging.

Etymology.

This specific name is taken from the Chinese Pinyin ‘biān’, meaning ‘whip’, referring to the long, whip-like embolus; noun in apposition.

Diagnosis.

This species is similar to Vittatus pan sp. n. in the whip-like embolus and its turning direction (Fig. 104B), but differs by its dark coloration (light in Vittatus pan sp. n.) (Fig. 105C), lack of ventral tibial apophysis, straight dorsal tibial apophysis (Fig. 105A) and scape with terminal transversal arms (Fig. 106A).

Description.

Male (holotype). Total length: 1.40. Carapace 0.60 long, 0.50 wide, brown, with two rows of long setae between AME and PME. Sternum 0.36 long, 0.34 wide. Clypeus 0.11 high. Eye sizes and interdistances: AME 0.04, ALE 0.06, PME 0.05, PLE 0.05, AME-AME/AME 0.75, PME-PME/PME 0.80, AME-ALE/ALE 0.67, PME-PLE/PLE 1.60, coxae IV separated by 1.60 times their width. Length of legs: I 2.45 (0.64, 0.19, 0.69, 0.56, 0.37), II 2.34 (0.61, 0.16, 0.63, 0.57, 0.37), III 1.55 (0.47, 0.16, 0.31, 0.31, 0.30), IV 2.38 (0.63, 0.18, 0.61, 0.61, 0.35). Leg formula: I-IV-II-III. TmI 0.53, TmIV 0.52. Abdomen greenish brown. Palp: tibia with one dorsal apophysis subdivided on the top (Fig. 105A). Cymbium droplet-shaped (Fig. 105A); paracymbium ‘C’ -shaped, with a leaf-like apex (Fig. 104B). Bulb with a flattened subtegulum and a slightly protruding tegulum (Fig. 104A). Embolus long, whip-like; convector long, ribbon-like (Fig. 104B). Embolus and convector of equal length. Radical apophysis straight, bifurcate (Fig. 104B).

Female (one of paratypes). Total length: 1.53. Carapace 0.51 long, 0.52 wide, dark brown, with black pattern. Sternum 0.38 long, 0.36 wide. Clypeus 0.09 high. Chelicerae promargin with 4 teeth, retromargin with 4 teeth. Eye sizes and interdistances: AME 0.04, ALE 0.06, PME 0.04, PLE 0.04, AME-AME/AME 1.00, PME-PME/PME 0.75, AME-ALE/ALE 0.67, PME-PLE/PLE 1.25, coxae IV separated by 1.33 times their width. Length of legs: I 2.27 (0.59, 0.17, 0.61, 0.54, 0.36), II 2.24 (0.61, 0.20, 0.58, 0.50, 0.35), III 1.82 (0.50, 0.15, 0.44, 0.44, 0.29), IV 2.25 (0.62, 0.18, 0.58, 0.55, 0.32). Leg formula: I-IV-II-III. TmI 0.56, TmIV 0.54. Abdomen dark brown. Epigyne: a ventral fig semi-rounded, mesally concave, with a membraneous scapoid, equipped by membraneous arm at each side of the tip (Fig. 106A); dorsal fig wide, with blunt posterior rim; spermathecae somewhat oval (Fig. 106C).

Distribution.

Known only from type localities.