Emertonella trachypa, Gao & Li, 2014

Gao, Cai-Xia & Li, Shu-Qiang, 2014, Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China, Zoological Systematics 39 (1), pp. 1-135 : 50

Emertonella trachypa sp. nov. ( Figs 40–43 )

Holotype ♂, China, Yunnan, Xishuangbanna, Mengla County, Menglun Town , bamboo plantation (21º54.386'N, 101º16.803'E), 22 November 2009, Guo Tang and Zhi-Yuan Yao leg.

Paratypes 2♀, same data as holotype .

Etymology. The specific name derives from the Latin adjective trachypus and means stipitiform, in reference to the embolus resemble long handle.

Diagnosis. The new species can be distinguished from other species of the genus by the triangular tegular apophysis and the long, handle-shaped embolus.

Male (measurements of holotype). Total length 1.40. Prosoma 0.50 long, 0.49 wide, high, columned, brown, with black striae. Sternum 0.31 long, 0.31 wide, brown. Opisthosoma 0.96 long, 0.82 wide, grey, with many dents, with 2 setae instead of colulus. Eye measurements: AME 0.08, ALE 0.07, PME 0.07, PLE 0.06, AME-AME 0.06, AME-ALE 0.02, PME-PME 0.03, PME-PLE 0.03. Clypeus height about 3.75 times AME diameter, grey. Chelicerae: pale yellow, with dark spots, without tooth; fangs long and slender. Endites: 0.05 long, 0.13 wide, yellow with dark spots, brown pro-edges. Labium fused with sternum, 0.08 long, 0.01 wide, with 4 setae, yellow. Leg measurements: I absent; II 1.19 (0.38, 0.16, 0.25, 0.21, 0.19); III 1.21 (0.41, 0.19, 0.25, 0.19, 0.17); IV 1.27 (0.39, 0.16, 0.34, 0.22, 0.16). Leg II yellow, except femur grey; patella with 1 spine; tibia with 3 spines, 1–2 trichobothria. Leg III–IV similar to leg II. Pedipalpus ( Figs 40A–B , 41A–B , 43A–D ): tibia with 2 trichobothria; cymbium yellow, without spot; paracymbium hooded; subtegulum embeded in tibia; tegulum narrow; median apophysis smooth, without protrusion; embolus long, handle-shaped; conductor membranous; tegular apophysis triangular, short, strong.

Female (measurements of paratypes). Total length 2.05–2.60. Prosoma 0.70–0.80 long, 0.73–0.75 wide, high, columned, brown, with black stripes. Sternum 0.57–0.63 long, 0.43–0.44 wide, brown. Opisthosoma 1.40–2.03 long, 1.15–1.68 wide, grey, with pale spots, many dents. Legs brown, similar to male, femur Ⅰ–IV dark brown. Epigynum ( Figs 40C–D , 42A–B ) flat; two pairs of spermathecae; anterior pair spermathecae connected by duct; copulatory ducts long, curved, originating from posterior spermathecae, opening to anterior margin of atrium; fertilization ducts short, originating (fix throughout) from upper pair spermathecae.

Distribution. Only known from type locality (Yunnan).

Figures

Fig. 40. Emertonella trachypa sp. nov., holotype male and paratype female. A. Pedipalpus, prolateral view; B. Pedipalpus, retrolateral view; C. Epigynum (vulva), ventral view; D. Epigynum (vulva), dorsal view. Scale bars = 0.10mm.

Fig. 41. Emertonella trachypa sp. nov., holotype male. A. Pedipalpus, ventral view; B. Embolus, ventral view. Scale bars =

Fig. 42. Emertonella trachypa sp. nov., holotype male and paratype female. A. Epigynum (vulva), ventral view; B. Epigynum (vulva), dorsal view; C. Male habitus, dorsal view; D. Male habitus, lateral view; E. Female habitus, dorsal view. Scale bars: A–B = 0.05mm; C–E = 0.50mm.

Fig. 43. Emertonella trachypa sp. nov., holotype male. A. Pedipalpus (cymbium removed), ventral view; B. Pedipalpus, ventral view; C. Pedipalpus, prolateral view; D. Pedipalpus, retrolateral view. Scale bars = 0.10mm.