Clubiona tiane, Yu & Li, 2019

Yu, Hao & Li, Shuqiang, 2019, On further species of the spider genus Clubiona Latreille, 1804 (Araneae, Clubionidae) from Xishuangbanna Rainforest, southwestern China, Zootaxa 4679 (2), pp. 201-230 : 204-206

Clubiona tiane sp. nov.

Figs 3–4

Type material. Holotype: ♂ ( IZCAS Ar 34703), CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town , Menglun Nature Reserve , G 213 roadside, Bamboo plantation (N21º53.642′, E101º16.940′, 589 m), 22 July 2018, leg. H. Yu and Z.G. Chen (Yu_20180722-1_Searching-16) ; Paratype: CHINA: Yunnan: Xishuangbanna, Mengla County, Menglun Town , Menglun Nature Reserve , 1♂ ( IZCAS Ar 34704), Rubber-Tea Plantation (N21º55.238′, E101º15.51′, 572 m), 18 July 2007, leg. H. Yu and Z.L. Bai (Yu_20180718-1_Searching-5) .

Etymology. The specific name is derived from the Chinese pinyin 'tiân é', which means 'swan', referring to the curved embolus, shape like a swan; noun in apposition.

Diagnosis. Clubiona tiane sp. nov. resembles C. subyaginumai Yu & Li, 2019 ( Yu & Li 2019a: 158, figs 5A–E, 6D–E) with similar pale coloured habitus ( Figs 4 A–C) and the general shape of palp ( Figs 3 A–E), but can be distinguished by: (1) palpal tibia without prolateral apophysis ( Fig. 3A ); (2) embolus curved and swan-shaped ( Figs 3 C–E) (embolus straight and needle-shaped in C. subyaginumai ); (3) the retrolateral tibial apophysis smaller and fin-shaped ( Fig. 3B ) (wider and thumb-like in C. subyaginumai ).

Description. Male (holotype): Total length 2.93; prosoma 1.34 long, 1.03 wide; opisthosoma 1.52 long, 0.95 wide. Prosoma ( Figs 4 A–C), oval, ocular region narrowed, widest between coxae II and III; in profile highest just behind longitudinal fovea; integument smooth, clothed with short fine hairs. Carapace nearly pure white, without distinct color pattern; fovea dark. Chelicerae brown, with six promarginal and four retromarginal teeth. Labium and endites light brown, longer than wide. Sternum coloured as carapace. Eyes: both AER and PER recurved in dorsal view. AME dark, other eyes light; with black rings. Eye sizes and interdistances: AME 0.08, ALE 0.11, PME 0.11, PLE 0.11, AME–AME 0.04, AME–ALE 0.02, PME–PME 0.14, PME–PLE 0.29, MOQL 0.26, MOQA 0.23, MOQP 0.37. Legs yellowish white, without distinct color markings. Leg formula: IV, II, I, III; leg measurements: I 3.36 (0.93, 1.34, 0.69, 0.41), II 3.95 (1.07, 1.57, 0.84, 0.47), III 3.12 (0.91, 1.05, 0.83, 0.32), IV 4.30 (1.17, 1.53, 1.24, 0.36). Opisthosoma ( Figs 4 A–C) elongate-oval, white, with inconspicuous anterior tufts of hairs, dorsum with two pairs of inconspicuous muscular depressions; venter white. Palp ( Figs 3 A–E): tibia short, only with retrolateral apophysis; RTA short, narrow and fin-shaped, with partly membranous tip; bulb oval and strongly bulged, sperm duct inconspicuous; embolus with basal torsion and distal claw-like bend, shape like a swan; embolic base represented by enlarged tubercle; conductor absent.

Female: Unknown.

Distribution. Presently known only from the type locality.

Figures

FIGURE 3. Clubiona tiane sp. nov., male holotype: A–B, flipped right palp (A prolateral view; B retrolateral view); C–E, left palpal bulb (C prolateral view; D ventral view; E retrolateral view). Abbreviatures: E, embolus; EB, embolic base; RTA, retrolateral tibial apophysis. Scale bars: 0.10 mm (A–B, C–E in the same scale).

FIGURE 4. Clubiona tiane sp. nov., male holotype, habitus: A dorsal view; B ventral view; C lateral view. Scale bars: 1 mm (A–C in the same scale).