Dipoena calvata, 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 : 35-39

Dipoena calvata sp. nov. ( Figs 30–32 )

Holotype ♂, China, Yunnan, Xishuangbanna, Mengla County, Menglun Town , primary tropical seasonal rainforest (2155.035'N, 101º16.500'E), 16–31 May 2007, Guo Zheng leg.

Paratypes 2♂, Menglun Nature Reserve , secondary tropical montane evergreen broad-leaved forest (21º54.767'N, 101º11.431'E), 16–31 April 2007, Guo Zheng leg.

Etymology. The specific name derives from the Latin adjective calvatus and means smooth, in reference to the smooth median apophysis.

Diagnosis. The new species is similar to D. tiro but can be distinguished by the smooth median apophysis, long, slender embolus, and the lower prosoma.

© Zoological Systematics, 39 (1): 1–135

© Zoological Systematics, 39 (1): 1–135

© Zoological Systematics, 39 (1): 1–135

Male (measurements of holotype). Total length 1.60. Prosoma 0.80 long, 0.63 wide, high, yellow, with black spots, dorsal grooves in middle. Sternum 0.40 long, 0.45 wide, yellow with dark spots. Opisthosoma 0.98 long, 0.63 wide, grey, with large white spots, without colulus. Eye measurements: AME 0.10, ALE 0.09, PME 0.09, PLE 0.08, AME-AME 0.06, AME-ALE 0.03, PME-PME 0.05, PME-PLE 0.04. Clypeus height about 4.80 times AME diameter, yellow. Chelicerae: yellow, without tooth; fangs long, slender (fix throughout!!). Endites: 0.17 long, 0.09 wide, yellow to grey with brown pro-edges. Labium fused with sternum, 0.06 long, 0.13 wide, yellow. Leg measurements: I 2.48 (0.75, 0.25, 0.60, 0.53, 0.35); II 1.95 (0.60, 0.22, 0.40, 0.40, 0.33); III 1.55 (0.55, 0.20, 0.38, 0.22, 0.20); IV 2.36 (0.76, 0.25, 0.53, 0.40, 0.42). Leg I yellow, without spot; femur with row of spines, tibia with 1 spine. Legs II–IV similar to leg I, except femur II–IV with 1 spine. Pedipalpus ( Figs 30A–B , 31A–B , 32A–D ): tibia with 2 trichobothria; cymbium yellow; paracymbium hooked; subtegulum and tegulum smooth, without apophyses; median apophysis smooth, without protrusion; tegular

© Zoological Systematics, 39 (1): 1–135

apophysis with branch; embolus long, slender, with basal process; conductor long, with process.

Variation. Male paratypes. Total length 1.21–1.63; prosoma 0.63–0.75 long, 0.44–0.65 wide, high, with dorsal grooves at middle, pale yellow, without spot; sternum 0.33–0.48 long, 0.33–0.48 wide, yellow; opisthosoma 0.75–0.93 long, 0.63–0.69 wide, grey with large white spots.

Female. Unknown.

Distribution. Only known from type locality (Yunnan).

Figures

Fig. 30. Dipoena calvata sp. nov., holotype male. A. Pedipalpus, prolateral view; B. Pedipalpus, retrolateral view. Scale bars = 0.10mm.

Fig. 31. Dipoena calvata sp. nov., holotype male. A. Pedipalpus, ventral view; B. Embolus, ventral view. Scale bars = 0.10mm.

Fig. 32. Dipoena calvata 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.