Orchestina wengnan Tong & Li, 2024

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 wengnan Tong & Li sp. nov.

Figs 13 , 14

Type material.

Holotype: ♂ (SYNU-767), China, Yunnan, Jinghong City, Menghai Co., Meng’a Town, Wengnan Vill., sifting leaf litter, secondary forest (22°05.020'N, 100°22.086'E), elev. 1118 m, 24 July 2012, Zhao & Chen leg. Paratypes: 1♂ (SYNU-768), sifting leaf litter, Mandazhai Vill., secondary forest (22°01.702'N, 100°23.697'E), elev. 1188 m, 28 July 2012, Zhao & Chen leg.; 1♂ (SYNU-789), sifting leaf litter, Wengnan Vill., secondary forest (22°04.996'N, 100°22.223'E), elev. 1137 m, 25 July 2012, Zhao & Chen leg.

Etymology.

The specific name is a noun in apposition taken from the type locality.

Diagnosis.

The new species is similar to O. zhiwui Liu, Xu & Henrard, 2019 in having median projection of clypeus and the net-shaped pattern on carapace, but can be distinguished by the endites with smoothly outer margin (Fig. 14D ) vs. with triangular outgrowth in O. zhiwui ( Liu et al. 2019: figs 12H,13A; Wang et al. 2021: figs 1H, 2G) and the sperm duct with two loops in prolateral view (Fig. 14A ) vs. only half loops ( Liu et al. 2019: fig. 13B; Wang et al. 2021: fig. 1I).

Description.

Male (holotype). Total length 0.94, carapace length 0.48, carapace width 0.38, abdomen length 0.49. Habitus as in Fig. 13A-C . Color in alcohol: carapace yellow, abdomen and legs pale yellow. Carapace oval, with net-shaped pattern, pars cephalica strongly elevated in lateral view, with rounded posterolateral corners. Clypeus (Fig. 13F ) with a median projection in frontal view, rounded forward in lateral view. Sternum (Fig. 13G ) longer than wide, with marginal band and median area of radiating lines, surface smooth. Mouthparts: chelicerae straight, anterior face unmodified; labium rounded, not fused to sternum, anterior margin not indented at middle; endites (Figs 13G , 14D ) strongly sclerotized, outer margin with serrula. Abdomen ovoid, with gray ^-shaped pattern. Genitalia (Fig. 14A-C ): tibia of palp strongly enlarged, length/width ratio = 1.72, cymbium small; bulb pear-shaped, about 1.0 times as wide as tibia, with distal part gradually tapered towards embolus; the sperm duct strongly curved with two loops; embolus short.

Female. Unknown.

Distribution.

China (Yunnan: Menghai County, Meng’a Town).

Figures

Figure 13. Orchestina wengnan sp. nov., holotype male. A-C. Habitus, dorsal, ventral and lateral views; D-G. Prosoma, dorsal, lateral, anterior and ventral views. Scale bars: 0.4 mm (A-C); 0.2 mm (D-G).

Figure 14. Orchestina wengnan sp. nov., holotype male. A-C. Left palp, prolateral, retrolateral and dorsal views; D. Endites and labium, ventral view. Abbreviation: Se = serrula. Scale bars: 0.1 mm.