Theridiosoma vimineum, Zhao, Qingyuan & Li, Shuqiang, 2012

Zhao, Qingyuan & Li, Shuqiang, 2012, Eleven new species of theridiosomatid spiders from southern China (Araneae, Theridiosomatidae), ZooKeys 255, pp. 1-48 : 19-20

Theridiosoma vimineum sp. n. Figs 2627

Material examined.

Holotype: CHINA, Yunnan: Menglun Town: Xingshuangbanna Botanical Garden, 21°55.428'N, 101°16.441'E, elevation ca 598 m, 19-26 May 2007, primary tropical seasonal rain forest, searching, G. Zheng (IZCAS), 1 male.

Etymology.

The specific name is derived from Latin word ‘vimineus’ meaning ‘pliant’, refers to the long, pliant apophysis that protrudes from the conductor (Fig. 26B); adjective.

Diagnosis.

Males similar to Theridiosoma semiargentum (Simon) ( Coddington 1986: figs 154, 156), but different in the details of embolic apophysis fragments and the shape of median apophysis. The apophysis protruding from the conductor is longer and slimmer in Theridiosoma vimineum , spur on the conductor is absent, and the median apophysis lacks a pointed hook at the tip.

Description.

Carapace yellow. Sternum tan with dark margins. Legs yellow. Abdomen tan with light grey spots randomly distributed on the dorsal area.

Male pedipalp: Patella with macroseta. Tibia with one trichobothrium. Paracymbium elongate with sharp tip. Tegulum smooth with rough mesal lobe. Median apophysis slightly grooved, semi-transparent at the distal end (Figs 26B, 27B). Conductor translucent theca with a hooked end oriented proximally (Fig. 26A). A piece of long, flat embolic apophysis fragment with a attenuated tip protruding from the ridge of conductor and stretching toward median apophysis (Figs 26B, D). Embolic apophysis fragmented into long, slim bristles (Fig. 26C).

Male: Total length 1.75, carapace 0.95 long, 0.50 wide, clypeus 0.19, sternum 1.54 long, 0.35 wide, coxae IV separated by their width. Posterior median eyes separated by their diameter. Macrosetae: Leg I: femur d 1, patella d 2, tibia d 2, p 1; Leg II: patella d 2, tibia d 2, r 1; Leg III: patella d 1, tibia r 2; Leg IV: tibia d 1. Metatarsal trichobothria: Tm I: 0.23; Tm II: 0.20. Leg measurements: I 2.18 (0.68, 0.25, 0.50, 0.50, 0.25); II 1.86 (0.63, 0.20, 0.38, 0.40, 0.25); III 1.03 (0.35, 0.13, 0.15, 0.25, 0.15); IV 1.31 (0.38, 0.18, 0.30, 0.30, 0.15).

Female unknown