Ozyptila kansuensis ( Tang, Song & Zhu, 1995 ) Tang & Luo & Deng, 2013

Tang, Guo, Luo, Wei-Fen & Deng, Shu-Ye, 2013, First description of the female Ozyptila kansuensis (Tang, Song & Zhu, 1995), comb. nov. (Araneae: Thomisidae), Zootaxa 3737 (1), pp. 97-100 : 97-100

Ozyptila kansuensis ( Tang, Song & Zhu, 1995) comb. nov.

Figs 1–14

Xysticus kansuensis Tang et al., 1995: 19 , fig. 3 (A–B, ♂); Song & Zhu, 1997: 91, plate 58 (A–B, ♂); Yin et al., 2012: 1318, plate 712 (a–c, ♂).

Type material. Holotype: male, CHINA: Gansu Province (“ Kansu ” in Tang et al., 1995), Wen County, 24 June 1992, leg. Y.Q. Tang, kept in the Institute of Zoology, Chinese Academy of Sciences in Beijing (IZCAS-Ar 9447), examined by G. Tang.

Other material examined. CHINA: Hunan, Changsha City, Mountain Yuelu : 3 ♂, May 1986, leg. X.J. Peng; 1 ♀, 2 November 2007, leg. G. Tang and X.Q. Mi; 10 ♂, 5 ♀, the square (about 80 m 2) of the Monument of Anti-Japanese Heroes (N28º11.54', E112º56.28', 112 m), 5–25 May 2012, by hand, leg. G. Tang ; 5 ♂ (kept in 95% ethanol), the same data .

Diagnosis. This species is similar to O. imbrex Tang & Li, 2010 and O. wuchangensis Tang & Song, 1988 ( Tang & Li 2010: p.41–44, figs 28–30; Tang & Song 1988: p.246–248, figs 4–10). The female is similar to those species in having an epigynal hood and lateral epigynal sclerites, but can be distinguished by: 1) the larger body size: 4.80–7.20 (2.90–3.50 in O. imbrex , 3.5 in O. wuchangensis ); 2) the slender copulatory ducts. The male can be distinguished from O. imbrex by the tegulum with raised ridge and the intermediate tibial apophysis (ITA) without bifurcation (tegulum with 3 apophyses, ITA bifurcated in O. imbrex ); the male can be distinguished from O. wuchangensis by: the slender embolus, the long ITA (embolus short, ITA much shorter in O. wuchangensis ).

Description. Female: Total length 4.05, cephalothorax 2.23 long, 2.18 wide; abdomen 1.87 long, 2.24 wide. Cephalothorax dorsally blackish brown with “V”-shaped yellowish brown markings ( Fig. 1 ), covered with clavate setae ( Fig. 1 ). Cervical grooves, radial grooves and fovea visible. Eye tubercles yellowish brown; eye measurements: anterior lateral eye 0.19, posterior lateral eye 0.13, anterior median eye 0.07, posterior median eye 0.07; distance between anterior median eyes 0.33, distance between anterior median eye and anterior lateral eye 0.18, distance between posterior median eyes 0.30, distance between posterior median eye and posterior lateral eye 0.40, median ocular area length 0.28 with front width 0.46 and back width 0.44. Chelicerae dark brown, endites and labium greyish brown, sternum greyish brown with blackish brown spots. Femora I–IV with blackish brown spots. Tibiae and metatarsi I–II with 3 pairs of ventral spines. Leg measurements: I 6.70 (2.20, 2.40, 1.20, 0.90), II 6.80 (2.20, 2.50, 1.20, 0.90), III 4.20 (1.50, 1.60, 0.60, 0.50), IV 4.30 (1.50, 1.70, 0.60, 0.50), leg formula 2143. Abdomen covered dorsally with rows of short clavate setae. Abdomen dorsally greyish black with blackish brown markings, ventrally grayish brown with blackish brown spots.

Epigyne ( Figs 9–10 , 13–14 ). Epigyne anteriorly with a hood, a pair of lateral sclerites which cover copulatory openings; copulatory ducts slender, twisted; spermatheca convoluted.

Male: Smaller than female, somatic coloration darker than in female. The clavate setae on cephalothorax are not obvious in darken specimens while they can be observed in lighten ones ( Fig 2, 3 ). Measurements. Total length 4.20, cephalothorax 2.30 long, 2.30 wide; abdomen 2.10 long, 2.10 wide. Cephalothorax dorsally blackish brown ( Fig. 2 ). Tibiae and metatarsi I– II with 3 pairs of ventral spines. Leg measurements: I 8.00 (2.40, 2.80, 1.80, 1.00), II 8.40 (2.60, 3.00, 1.80, 1.00), III 5.30 (1.80, 1.80, 1.00, 0.70), IV 5.50 (2.00, 1.80, 1.00, 0.70), leg formula 2143.

Palp ( Figs 6–8 , 11–12 ). Tibia with stout, hooked ventral apophysis, digitiform intermediate apophysis and long retrolateral apophysis. Palp with raised basal tegular ridge, embolus slender.

Variation. Total length: ♂ 4.00–4.55 (n=17, a dwarf male specimen only 3.50); ♀ 4.80–7.20 (n=6). The abdominal markings of both sexes vary in coloration and size. The “V”-shaped marking on cephalothorax can also be observed in some male specimens. The dwarf male specimen shows un-symmetrically developed palps: the left one developed while the right one un-developed ( Figs 4, 5 ).

Distribution. China (Gansu, Hunan).

Acknowledgements

We thank Xinping Wang (www. Amaurobiidae .com), Christoph Muster (Putbus, Germany) and two anonymous reviewers for reading and improving this manuscript. This study was financially supported by the National Natural Sciences Foundation of China (NSFC-31272271, 31272272, 31372160), the Hunan Provincial Construct Program of the Key Discipline in Ecology.

Figures

FIGURES 1–10. Ozyptila kansuensis comb. nov. 1–3 Habitus with clavate setae, dorsal (1 female, 2, 3 male); 4–5 Asymmetric palps of one dwarf male specimen (4 dorsal, 5 ventral); 6–8 Male left palp (6 prolateral, 7 ventral, 8 retrolateral); 9. epigyne, ventral; 10 vulva, dorsal. Scale bars: 1–5 = 1.0 mm; 6–10 = 0.1 mm.

FIGURES 11–14. Ozyptila kansuensis comb. nov. 11–12 Male left palp (11 ventral, 12 retrolateral); 13 epigyne, ventral; 14 vulva, dorsal. Scale bars: 11–14 = 0.1 mm. CD = copulatory ducts; CO = copulatory opening; E = embolus; ES = epigynal sclerites; FD = fertilization ducts; H = hood; ITA = intermediate tibial apophysis; RTA = retrolateral tibial apophysis; S = spermatheca; Tu = tutaculum; VTA = ventral tibial apophysis.