Vittatus latus, 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 : 45-46

Taxon classification Animalia Araneae Linyphiidae

Vittatus latus sp. n. Figs 112, 113, 114, 115

Types.

Holotype ♂: CHINA, Yunnan: Menglun Town: Xishuangbanna Nature Reserve, 21°57.809'N, 101°12.173'E, elevation ca 888 m, 4.08.2007, secondary tropical montane evergreen broad-leaved forest, fogging. Paratypes 12♀, same data as holotype; 3♀, 21°57.784'N, 101°11.947'E, elevation ca 895 m, 6.08.2007, secondary tropical montane evergreen broad-leaved forest, fogging; 3♀, 21°54.767'N, 101°11.431'E, elevation ca 880 m, 6.08.2007, secondary tropical montane evergreen broad-leaved forest, fogging.

Etymology.

This specific name is taken from the Latin word ‘latus’, meaning ‘broad’, in reference to the wide base of the embolus; adjective.

Diagnosis.

This species greatly resembles Vittatus fencha sp. n., but differs in the following aspects: the anterior radical process in Vittatus latus sp. n. is larger and has a hooked tip (Fig. 112A); the embolus is wider at the base, without thumb near tip (Fig. 112B); the scapoid of Vittatus latus sp. n. is much longer and the spermathecae are distantly separated (Fig. 114A, C). Palpal patella is modified with a hump in Vittatus latus sp. n.

Description.

Male (holotype). Total length: 1.75. Carapace 0.75 long, 0.68 wide, unmodified, orange. Abdomen pale, with greenish grey spinnerets. Sternum 0.38 long, 0.44 wide. Clypeus 0.18 high. Chelicerae promargin with 5 teeth, retromargin with 3 teeth. Eye sizes and interdistances: AME 0.04, ALE 0.05, PME 0.03, PLE 0.04, AME-AME/AME 0.75, PME-PME/PME 1.67, AME-ALE/ALE 1.80, PME-PLE/PLE 2.50, coxae IV separated by 1.73 of their diameters. Length of legs: I 3.03 (0.80, 0.23, 0.81, 0.75, 0.44), II 2.90 (0.80, 0.22, 0.78, 0.70, 0.40), III 2.38 (0.64, 0.20, 0.56, 0.60, 0.38), IV 2.89 (0.80, 0.20, 0.75, 0.75, 0.39). Leg formula: I-II-IV-III. TmI 0.67, TmIV 0.63. Palp: tibial prolateral apophysis modified, a tube-like process stretching from the distal margin of tibia, slightly curved (Fig. 112B), developed into a broader, hollow structure, with sulci along the bottom (Fig. 112A); a belt of conspicuous papillae stretching from the inner surface of the sulci to the bifid apex (Fig. 112A); cymbium lunar-shaped (Figs 112B, 115B); paracymbium ‘J’ -shaped, narrow (Fig. 112A); distal suprategular apophysis triangular, slightly hooked at tip (Fig. 112B); embolus long and wide, accompanied by convector, following the same route (Figs 112 A–B, 115 A–B).

Female (one of paratypes). Total length: 1.88. Carapace 0.80 long, 0.63 wide, unmodified, orange. Abdomen pale, with greenish-grey spinnerets and dark patches around them. Sternum 0.47 long, 0.47 wide. Clypeus 0.15 high. Chelicerae promargin and retromargin with 5 teeth. Eye sizes and interdistances: AME 0.04, ALE 0.06, PME 0.06, PLE 0.05, AME-AME/AME 0.75, PME-PME/PME 0.60, AME-ALE/ALE 0.50, PME-PLE/PLE 0.67, Coxae IV separated by 1.54 times their width. Lengths of legs: I 2.94 (0.75, 0.25, 0.81, 0.69, 0.44), II 2.82 (0.75, 0.23, 0.70, 0.70, 0.44), III 2.36 (0.63, 0.23, 0.55, 0.56, 0.39), IV 2.96 (0.80, 0.20, 0.74, 0.74, 0.48). Leg formula: IV-I -II-III. TmI 0.69, TmIV 0.68. Patellar spine formula: 2-2-2-2. Epigyne: scapoid ribbon-like, with a slightly concave tip (Fig. 114A); dorsal fig with an opening at the posterior rim (Fig. 114 A–C); copulatory ducts follow a path from the middle to each side, then up to the spermathecae (Fig. 114D); spermathecae elliptical (Fig. 114A).

Distribution.

Known only from type localities.