Belisana tengchong Zhang, Li & Yao 2024, sp. nov.
Creators: name: Zhang, Ludan
name: Wu, Zheng
name: Li, Shuqiang
name: Yao, Zhiyuan
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Belisana
Belisana tengchong

description: Belisana tengchong Zhang, Li & Yao sp. nov.
Figs 10, 11, 18 I, J, 21 A, B
Type material.
Holotype ♂ (IZCAS - Ar 44969) and paratypes 2 ♂ (IZCAS - Ar 44970–71) 3 ♀ (IZCAS - Ar 44972–74), Kongming Cave (25 ° 20.447 ' N, 98 ° 32.297 ' E, 1802 m), Jiangdong Village, Gudong Town, Tengchong County, Baoshan, Yunnan, China, 18 / 08 / 2010, C Wang, Q Zhao & L Lin leg.
Etymology.
The specific name refers to the type locality, which is a noun in apposition.
Diagnosis.
The new species resembles B. pianma Huber, 2005 (Huber 2005: 14, figs 5, 6, 56, 88–92, 112–130) by having similar bulbal apophyses and epigyne (Figs 11 A, C, 21 A), but can be distinguished by differences in males: clypeus unmodified (Fig. 11 E vs with a pair of front apophyses), cheliceral distal apophyses on median part of chelicerae (Fig. 11 D vs distal part), procursus without distal spine and dorso-distal sclerite (Figs 10 C, 18 I vs present), and with angular distal membranous process (arrow 2 in Figs 10 C, 18 I vs absent); differences in females: pore plates wide and curved (2 × longer than wide, Figs 11 B, 21 B vs narrow, 6 × longer than wide).
Description.
Male (holotype): Total length 1.95 (2.08 with clypeus), carapace 0.71 long, 0.85 wide, opisthosoma 1.24 long, 0.93 wide. Leg I: 18.34 (4.75, 0.32, 4.90, 6.67, 1.70), leg II: 12.82 (3.56, 0.26, 3.40, 4.55, 1.05), legs III and IV missing; tibia I L / d: 65. Eye inter-distances and diameters: PME – PME 0.14, PME 0.10, PME – ALE 0.03, AME absent. Sternum width / length: 0.56 / 0.50. Habitus as in Fig. 11 E, F. Carapace and sternum yellowish, without marks. Legs whitish, without darker rings. Opisthosoma yellowish, without spots. Thoracic furrow absent. Clypeus unmodified. Chelicerae (Fig. 11 D) with a pair of proximo-lateral apophyses and a pair of curved distal apophyses (distance between tips: 0.28). Palp as in Fig. 10 A, B; trochanter with ventral apophysis (as long as wide, arrow 1 in Fig. 10 B); femur with tiny retrolatero-proximal protrusion (arrow 2 in Fig. 10 B); procursus simple proximally but complex distally, with curved, sclerotized prolatero-distal apophysis (arrow 1 in Figs 10 C, 18 I), angular distal membranous process (arrow 2 in Figs 10 C, 18 I), and narrow, curved retrolatero-subdistal membranous process (arrow in Figs 10 D, 18 J); bulb (Fig. 11 C) with hooked apophysis and simple embolus. Retrolateral trichobothria on tibia I on 17 % proximally; legs with short vertical setae on metatarsi; tarsus I with 17 distinct pseudosegments.
Female (paratype, IZCAS - Ar 44972): Similar to male, habitus as in Fig. 11 G, H. Total length 2.14 (2.26 with clypeus), carapace 0.66 long, 0.76 wide, opisthosoma 1.48 long, 1.34 wide; tibia I: 3.36; tibia I L / d: 47. Eye inter-distances and diameters: PME – PME 0.10, PME 0.10, PME – ALE 0.02, AME absent. Sternum width / length: 0.54 / 0.50. Epigyne (Figs 11 A, 21 A) simple and flat, marginally slightly sclerotized, with a pair of lateral pockets 0.30 apart. Vulva (Figs 11 B, 21 B) with curved anterior arch and a pair of wide, curved pore plates (2 × longer than wide) bearing indistinct teeth.
Variation.
Tibia I in two male paratypes (IZCAS - Ar 44970 –71): 5.45, 5.83. Tibia I in the other two female paratypes (IZCAS - Ar 44973 –74): 3.45, 4.05.
Habitat.
The species was found in the dark zone inside the cave.
Distribution.
China (Yunnan, type locality; Fig. 1).
description: Published as part of Zhang, Ludan, Wu, Zheng, Li, Shuqiang & Yao, Zhiyuan, 2024, Eight new spider species of Belisana Thorell, 1898 (Araneae, Pholcidae), with an updated overview of Belisana species from Yunnan, China, pp. 255-286 in ZooKeys 1202 on pages 255-286, DOI: 10.3897/zookeys.1202.121633