Belisana xiaolongha Zhu & Li 2021
- Dataset
- Two new spiders of the genus Belisana (Araneae: Pholcidae) from Xishuangbanna Rainforest, China
- Rank
- SPECIES
- Published in
- Zhu, Wenhui, Li, Shuqiang (2021): Two new spiders of the genus Belisana (Araneae: Pholcidae) from Xishuangbanna Rainforest, China. Zootaxa 4933 (4): 557-566, DOI: 10.11646/zootaxa.4933.4.6
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Pholcidae
- genus
- Belisana
- species
- Belisana xiaolongha
description
Description. Male (holotype, IZCAS Ar 41824): Total length 1.72 (1.88 with clypeus), carapace 0.78 long, 0.72 wide, opisthosoma 1.10 long, 0.63 wide. Leg I: 16.86 (4.23 + 0.26 + 4.36 + 6.73 + 1.28), leg II: 11.22 (3.21 + 0.25 + 2.76 + 4.17 + 0.83), leg III: 7.55 (2.24 + 0.19 + 1.92 + 2.69 + 0.51), leg IV: 9.70 (2.82 + 0.22 + 2.56 + 3.33 + 0.77); tibia I L / d: 70. Distance PME-PME 0.13, diameter PME 0.06, distance PME-ALE 0.09, AME absent. Sternum slightly wider than long (0.61 / 0.54). Habitus as in Figs 4 C – E. Carapace and sternum pale, without marks. Legs pale, without darker rings. Opisthosoma pale, without spots. Ocular area not elevated. Thoracic furrow absent. Clypeus unmodified. Chelicerae (Fig. 4 B) with pair of small proximo-lateral apophyses and a pair of long, curved distal apophyses, each with sclerotized and pointed tip (distance between tips of distal apophyses: 0.47). Pedipalps as in Figs 3 A – B; coxa unmodified; trochanter with short retrolatero-ventral apophysis; femur with small proximodorsal apophysis (arrow in Fig. 3 B); procursus (Figs 3 A – D, 5 E – F) simple proximally but complex distally, with serrated subdisto-ventral sclerite (arrow 1 in Figs 3 C, 5 E), bifid subdisto-prolateral sclerite (arrow 2 in Figs 3 C, 5 E), long distal membranous lamella (arrow 3 in Figs 3 C, 5 E), disto-prolateral spine (arrow 4 in Figs 3 C, 5 E), and with narrow retrolateral membranous flap (arrow f in Figs 3 D, 5 F); bulb (Fig. 4 A) with long, hooked apophysis and simple embolus. Retrolateral trichobothria of tibia I at 10 % proximally; legs with short vertical setae on metatarsi, without spines and curved setae; tarsus I with 22 distinct pseudosegments. Female: Unknown. Variation: Tibia I in male paratype (IZCAS Ar 41825): 4.56. Natural history. The species was found on the underside of leaves and collected by canopy fogging.
description
Figs 3 – 4, 5 E – F
diagnosis
Diagnosis. This species resembles B. menglun Yao & Li, 2020 (see Zhu et al. 2020 a: 334, figs 3 – 4) by the similar bulbal apophyses (Fig. 4 A) but can be distinguished by the presence of a serrated subdisto-ventral sclerite (arrow 1 in Figs 3 C, 5 E), disto-prolateral spine (arrow 4 in Figs 3 C, 5 E), and narrow retrolateral membranous flap (arrow f in Figs 3 D, 5 F) on the procursus, and the male cheliceral distal apophyses are directed downward (arrow da in Fig. 4 B; distal apophyses directed laterally in B. menglun).
distribution
Distribution. China (Yunnan, type locality only; Fig. 6).
etymology
Etymology. The specific name refers to the type locality and is a noun in apposition.
materials_examined
Type material. Holotype: Male (IZCAS Ar 41824), seasonal rainforest (21 ° 24 ’ 11.50 ” N, 101 ° 37 ’ 01.50 ” E, elevation 657 ± 15 m), Xishuangbanna Nature Reserve: Biological diversity corridor, Xiaolongha Village, Mengla County, Xishuangbanna, Yunnan, China, 29 June 2012, Zhigang Chen & Qingyuan Zhao leg. Paratype: 1 male (IZCAS Ar 41825), same data as holotype.
Name
- Homonyms
- Belisana xiaolongha Zhu & Li 2021