Belisana chuandiani Li, Zheng & Yao 2023, sp. nov.
Creators: name: Zhao, Fangyu
name: Yang, Lan
name: Li, Shuqiang
name: Zheng, Guo
name: Yao, Zhiyuan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Belisana
Belisana chuandiani

description: Belisana chuandiani Li, Zheng & Yao sp. nov.
Figs 2–3, 9A–B, 10A–B
Type material. Holotype: Male (SYNU-Ar00308), near Mandian Falls (22°7.845’N, 100°39.749’E, elevation 736 m), Nabanhe Nature Reserve, Xishuangbanna, Yunnan, China, 22 August 2012, Guo Zheng, Xue Li, and Wenyue Zhu leg. Paratype: 1 female (SYNU-Ar00309), same data as holotype.
Etymology. The specific name is a patronym in honor of the late Chinese arachnologist Chuandian Zhu; noun (name) in the genitive case.
Diagnosis. The new species resembles B. gupian Yao & Li, 2018 (Yao et al. 2018: 247, figs 3–4, 11B, 12B) having similar bulbal apophyses (Fig. 3C), male chelicerae (Fig. 3D), and shape of epigyne (Fig. 3A), but it can be distinguished by prolatero-subdistal sclerite of procursus nearly angular (arrow 1 in Figs 2C, 9A; vs. half-round in B. gupian), by procursus straight (Figs 2A–B, 9A–B; vs.distal part of procursus directed towards antero-ventrally in B. gupian), and by vulval pore plates nearly elliptic (Figs 3B, 10B; vs. anteriorly strongly widened in B. gupian).
Description. Male (holotype, SYNU-Ar00308): Total length 1.47 (1.56 with clypeus), prosoma 0.61 long, 0.55 wide, opisthosoma 0.86 long, 0.75 wide. Leg I: – (4.08 + 0.30 + – + – + –), leg II missing, leg III: 6.34 (1.74 + 0.23 + 1.54 + 2.16 + 0.67), leg IV: – (2.49 + 0.23 + 2.28 + – + –). Eye interdistances and diameters: PME-PME 0.06, PME 0.06, PME-ALE 0.03, AME absent. Sternum width/length: 0.46/0.43. Habitus as in Figs 3E–F. Dorsal shield of prosoma and sternum yellowish, without marks. Legs whitish, without darker rings. Opisthosoma yellowish, with dorsal and lateral black spots. Thoracic furrow absent. Clypeus unmodified. Chelicerae (Fig. 3D) with pair of proximo-lateral apophyses and pair of curved distal apophyses (distance between tips: 0.46). Pedipalp as in Figs 2A–B; trochanter two times longer than wide, with small retrolateral apophysis (arrow 1 in Fig. 2B); femur with retrolatero-proximal apophysis (arrow 2 in Fig. 2B); procursus (Figs 2A–D, 9A–B) simple proximally but complex distally, with nearly angular prolatero-subdistal sclerite (arrow 1 in Figs 2C, 9A), nearly half-round, distally pointed distal membranous lamella (arrow 2 in Figs 2C, 9A), and two retrolateral membranous lamellae (arrows in Figs 2D, 9B); bulb (Fig. 3C) with hooked apophysis and simple embolus. Legs with short vertical setae on metatarsi.
Female (paratype, SYNU-Ar00309): Similar to male, habitus as in Figs 3G–H. Total length 1.63 (1.71 with clypeus), prosoma 0.60 long, 0.58 wide, opisthosoma 1.03 long, 0.70 wide; leg I missing. Eye interdistances and diameters: PME-PME 0.03, PME 0.08, PME-ALE 0.03. Sternum width/length: 0.44/0.47. Epigyne (Figs 3A, 10A) simple and flat, with pair of postero-lateral pockets 0.41 apart (ep in Figs 3A–B, 10A–B). Vulva (Figs 3B, 10B) with ridge-shaped anterior arch and pair of curved, long elliptic pore plates.
Natural history. The species was collected in a seasonal rainforest by canopy fogging.
Distribution. China (Yunnan, type locality; Fig. 1).
description: Published as part of Zhao, Fangyu, Yang, Lan, Li, Shuqiang, Zheng, Guo & Yao, Zhiyuan, 2023, A further study on the Belisana spiders (Araneae: Pholcidae) from Xishuangbanna, Yunnan, China, pp. 543-558 in Zootaxa 5351 (5) on pages 546-549, DOI: 10.11646/zootaxa.5351.5.3, http://zenodo.org/record/8392232