Orchestina truncatula Tong & Li, 2011

Song, Chenxue, Tong, Yanfeng, Bian, Dongju & Li, Shuqiang, 2024, A survey of the genus Orchestina Simon, 1882 (Araneae, Oonopidae) from Xishuangbanna, China, with descriptions of five new species, Zoosystematics and Evolution 100 (1), pp. 255-277 : 255

Orchestina truncatula Tong & Li, 2011

Figs 10 , 11 , 12

Orchestina truncatula Tong & Li, 2011: 39, figs 1E-F, 2C, 3C-D, 4D, 5E, 8A-F; Tong, 2013: 48, figs 26E-F, 27C, 28C-D, 29D, 30E, 66A-F; Rajoria & Jadhao, 2016: 61, figs 1-5.

Material examined.

2♂ (SYNU-773-774), China, Yunnan, Mengla Co., Menglun Town, XTBG, fogging, Lvshilin , limestone monsoon rainforest (21°54.617'N, 101°16.843'E), elev. 738 m, 8 August 2011, Zheng, Zhao & Gao leg. ; 1♀ (SYNU-783), sifting leaf litter, Bubang Vill. (21°36.640'N, 101°34.905'E), elev. 823 m, 10 July 2012, Zhao & Chen leg.; 7 ♂ 5♀ (SYNU-874), sifting leaf litter, seasonal rainforest (22°09.765'N, 100°52.553'E), elev. 862 m, 22 July 2012, Zhao & Chen leg.

Type material (examined).

Holotype ♂ (IZCAS Ar 19320), China: Hainan, Baisha, Yinggeling, Yinggezui Protection Station, 693 m a.s.l., 19°03.049'N, 109°33.751'E, 25 August 2010, leg. G. Zheng. Paratypes: 1 ♂, 1♀ (IZCAS Ar 19319), same data as holotype; 2 ♀ (IZCAS Ar 19318), China: Hainan, Ledong, Jianfengling, 997m a.s.l., 18°44.658'N, 108°50.435'E, 18 August 2010, leg. G. Zheng.

Diagnosis.

This species is similar to O. communis Henrard & Jocqué, 2012 in the large leaf-shaped setae on the diamond-shaped labium and the group of strong, converging setae on distal part of the male chelicerae, but can be distinguished by the small process at base of male chelicerae (Fig. 10F, G ; Tong and Li 2011: fig. 3C, D), vs. without the small process ( Henrard and Jocqué 2012: figs 90, 93), and the shape of anterior uterine sclerite (AUS), the length/width ratio about 1.25 (Fig. 12F ; Tong and Li 2011: fig. 5E), vs. about 0.6 ( Henrard and Jocqué 2012: fig. 104).

Description.

See Tong and Li (2011).

Comment.

Tong and Li (2011) described this species based on two male and three female specimens from forest canopy of Hainan Island. The present study materials were collected by fogging and sifting leaf litter from Xishuangbanna, Yunnan. Rajoria and Jadhao (2016) reported this species from Melghat region of Maharashtra, India based on a single male specimen. This suggests that O. truncatula may be widely distributed in Asia. In addition, tibia I of male with a group of ventrobasal spines (Fig. 10D ). This character was overlooked in the original publication.

Distribution.

China (Hainan, Yunnan); India.

Figures

Figure 10. Orchestina truncatula Tong & Li, 2011, male (SYNU- 773). A-C. Habitus, dorsal, ventral and lateral views; D. Left leg I, prolateral view; E-H. Prosoma, dorsal, lateral, anterior and ventral views, arrow shows the characteristic distal setae. Scale bars: 0.4 mm (A-C); 0.1 mm (D); 0.2 mm (E-H).

Figure 11. Orchestina truncatula Tong & Li, 2011, female (SYNU- 783). A, B. Habitus, dorsal and lateral views; C-F. Prosoma, anterior, dorsal, lateral and ventral views; G. Epigaster, ventral view. Scale bars: 0.4 mm (A-F); 0.1 mm (G).

Figure 12. Orchestina truncatula Tong & Li, 2011, male (SYNU- 773), female (SYNU- 783). A-C. Left palp, prolateral, retrolateral and dorsal views; D. Endites and labium, ventral view; E, F. Endogyne, ventral and dorsal views. Abbreviations: AUS = anterior uterine sclerite; Ex = dorsolateral extension; Pr = protrusion. Scale bars: 0.1 mm.