Laogone lunata, 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 : 23-24

Taxon classification Animalia Araneae Linyphiidae

Laogone lunata sp. n. Figs 52, 53, 54, 55

Types.

Holotype ♂, CHINA, Yunnan: Menglun Town: Xishuangbanna Nature Reserve, 21°57.445'N, 101°12.997'E, elevation ca 744 m, 30.07.2007, primary tropical seasonal rain forest, fogging. Paratypes 8♂18♀, same data as holotype; 1♂3♀, 21°54.607'N, 101°17.005'E, elevation ca 633 m, 5.-12.03.2007, secondary tropical seasonal moist forest, hand-collecting; 6♂4♀, 21°54.607'N, 101°17.005'E, elevation ca 633 m, 28.07.2007, secondary tropical seasonal moist forest, fogging; 23♂24♀, 21°57.669'N, 101°11.893'E, elevation ca 790 m, 7.08.2007, primary tropical seasonal rain forest, fogging; 3♂1♀, 21°54.984'N, 101°16.982'E, elevation ca 656 m, 10.08.2007, secondary tropical seasonal moist forest, fogging; 1♂8♀, 21°54.705'N, 101°16.898'E, elevation ca 664 m, 15.11.2009, Lvshilin tropical rain forest, fogging; 31♂29♀, 21°54.609'N, 101°17.090'E, elevation ca 643 m, 17.11.2009, Lvshilin tropical rain forest, fogging; 10♂35♀, 21°54.600'N, 101°17.084'E, elevation ca 640 m, 17.11.2009, Lvshilin tropical rain forest, fogging.

Etymology.

The name comes from the Latin word ‘lunatus’, meaning 'shaped like a crescent moon’, which refers to the shape of the cymbium in lateral view; adjective.

Diagnosis.

This species is similar to the type species Laogone cephala ( Tanasevitch 2014b: figs 28, 30-32; Fig. 52B), but differs by the short dorsal tibial apophysis, and the shape of membrosclerum.

Description.

Male (holotype). Total length: 1.90. Carapace 0.77 long, 0.56 wide, yellow, faded at the outer margin. Sternum 0.38 long, 0.44 wide. Clypeus 0.08 high. Chelicerae promargin with 4 teeth, retromargin with 3 teeth. Eye sizes and interdistances: AME 0.04, ALE 0.10, PME 0.09, PLE 0.08, AME-AME/AME 0.39, PME-PME/PME 1.25, AME-ALE/ALE 0.40, PME-PLE/PLE 1.04, coxae IV separated by 1.67 times their width. Length of legs: I 2.76 (0.67, 0.23, 0.70, 0.69, 0.47), II 2.79 (0.70, 0.23, 0.70, 0.69, 0.47), III 2.13 (0.55, 0.22, 0.47, 0.55, 0.34), IV 2.69 (0.78, 0.20, 0.63, 0.69, 0.39). Leg formula: II-I-IV-III. Tm I 0.79, Tm IV 0.73. Patellar spine formula: 2-2-2-2. Abdomen pale, with a black tip near spinnerets. Palp: patella elongate; tibia with two retrolateral and one dorsal trichobothria. Retroventral and retrodorsal apophyses both short and broad (Figs 52B, 53A). Cymbium crescent-moon shaped in lateral view (Fig. 52 A–B). Paracymbium mostly concealed under bulb (Figs 52B, 53B), with one small pointed tip (Figs 52B, 53B). Convector flat, round in ventral view. Membrosclerum comma-shaped from ventral view (Fig. 53B); tail piece small, tongue-shaped when viewed prolaterally (Fig. 52B); median membrane ribbon-like, with a tapering tip (Figs 52B, 53B). Loose part of embolus thread-like, forming one big loop, the enveloped part of embolus in convector forming small loop (Fig. 53B).

Female (one of paratypes). Total length: 1.97. Carapace 0.78 long, 0.59 wide, unmodified, same as male in coloration. Sternum 0.41 long, 0.44 wide. Clypeus 0.14 high. Chelicerae promargin with 5 teeth, retromargin with 5 teeth. Eye sizes and interdistances: AME 0.04, ALE 0.09, PME 0.08, PLE 0.08, AME-AME/AME 0.25, PME-PME/PME 0.50, AME-ALE/ALE 0.22, PME-PLE/PLE 0.38, coxae IV separated by 1.46 times their width. Length of legs: I 2.54 (0.70, 0.23, 0.63, 0.59, 0.39), II 2.54 (0.70, 0.23, 0.63, 0.59, 0.39), III 2.02 (0.55, 0.22, 0.47, 0.47, 0.31), IV 2.42 (0.63, 0.23, 0.61, 0.56, 0.39). Leg formula: II-I-IV-III. Tm I 0.76, Tm IV 0.89. Patellar spine formula: 2-2-2-2. Abdomen light pink, with a black tip. Epigyne: ventral fig semi-transparent, equipped with long veins forming two loops on it (Figs 54A, 55C); dorsal fig large, heart-shaped (Figs 54 B–C, 55D); copulatory ducts heading towards laterally then turning up and joining the spermathecae (Figs 54C, 55D); spermathecae somewhat oval (Fig. 54B).

Distribution.

Known only from type locality.