Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China Author Gao, Cai-Xia Author Li, Shu-Qiang text Zoological Systematics 2014 39 1 1 135 journal article 10.11865/zs20140101 2095-6827 7475365 D500B21F-511A-4B49-9968-9F51F1606427 Theridion circuitum sp. nov. ( Figs 78–80 ) Holotype ♂ , China , Yunnan , Xishuangbanna , Menglun Nature Reserve , primary tropical seasonal rainforest ( 21º54.725'N , 101º13.261'E ), 8 August 2007 , Guo Zheng leg. Etymology. The specific name derives from the Latin adjective circuitus and means revolving, in reference to the winding embolus. Diagnosis. The new species differs from other species of the genus by the embolus curving; conductor winding, with distal furcation. Male. Total length 1.45. Prosoma 0.63 long, 0.50 wide, flat, grey, with black stripes, without seta. Sternum 0.38 long, 0.38 wide, grey. Opisthosoma 0.88 long, 0.75 wide, grey, with pale spots, without seta, with colulus. Eye measurements: AME 0.08, ALE 0.06, PME 0.06, PLE 0.06, AME-AME 0.09, AME-ALE 0.03, PME-PME 0.10, PME-PLE 0.05. Clypeus height about 2.00 times AME diameter, yellow, with apophysis. Chelicerae: yellow, without spot or tooth; fangs long and slender. Endites: 0.25 long, 0.10 wide, grey, with brown pro-edges. Labium fused with sternum, 0.08 long, 0.18 wide, with 2 setae, grey. Leg measurements: I 2.50 (0.75, 0.23, 0.63, 0.46, 0.43); II 1.90 (0.65, 0.19, 0.43, 0.33, 0.30); III 1.09 (0.38, 0.13, 0.19, 0.19, 0.20); IV 1.60 (0.61, 0.15, 0.31, 0.28, 0.25). Leg I yellow to grey, without spines, with only soft setae. Legs II–IV similar to leg I. Pedipalpus ( Figs 78A–B , 79A–B , 80A–D ): tibia yellow to black, with 2 trichobothria; cymbium yellow to black; paracymbium hooded; subtegulum broad; tegulum smooth, without apophysis; median apophysis smooth, without protrusion; embolus long, curved; conductor long, winding, with 2 apophyses; tegular apophysis with distal branches. Female. Unknown. Distribution. Only known from type locality ( Yunnan ).