Belisana xiaolongha, Zhu & Li, 2021

Zhu, Wenhui & Li, Shuqiang, 2021, Two new spiders of the genus Belisana (Araneae: Pholcidae) from Xishuangbanna Rainforest, China, Zootaxa 4933 (4), pp. 557-566 : 561-565

publication ID	https://doi.org/ 10.11646/zootaxa.4933.4.6
publication LSID	lsid:zoobank.org:pub:D714E5D4-BE5A-49D3-AED5-9A0B38413959
DOI	https://doi.org/10.5281/zenodo.4556728
persistent identifier	https://treatment.plazi.org/id/E12C0973-F545-FFE1-2C89-FBACFCD3FA41
treatment provided by	Plazi
scientific name	Belisana xiaolongha
status	sp. nov.

Treatment

Belisana xiaolongha View in CoL sp. nov.

Figs 3–4 View FIGURE 3 View FIGURE 4 , 5 View FIGURE 5 E–F

Type material. Holotype: Male ( IZCAS Ar41824), 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. GoogleMaps Paratype: 1 male ( IZCAS Ar41825), same data as holotype GoogleMaps .

Etymology. The specific name refers to the type locality and is a noun in apposition.

Diagnosis. This species resembles B. menglun Yao & Li, 2020 (see Zhu et al. 2020a: 334, figs 3–4) by the similar bulbal apophyses ( Fig. 4A View FIGURE 4 ) but can be distinguished by the presence of a serrated subdisto-ventral sclerite (arrow 1 in Figs 3C View FIGURE 3 , 5E View FIGURE 5 ), disto-prolateral spine (arrow 4 in Figs 3C View FIGURE 3 , 5E View FIGURE 5 ), and narrow retrolateral membranous flap (arrow f in Figs 3D View FIGURE 3 , 5F View FIGURE 5 ) on the procursus, and the male cheliceral distal apophyses are directed downward (arrow da in Fig. 4B View FIGURE 4 ; distal apophyses directed laterally in B. menglun ).

Description. Male (holotype, IZCAS Ar41824): 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 View FIGURE 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. 4B View FIGURE 4 ) 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 View FIGURE 3 A–B; coxa unmodified; trochanter with short retrolatero-ventral apophysis; femur with small proximodorsal apophysis (arrow in Fig. 3B View FIGURE 3 ); procursus ( Figs 3 View FIGURE 3 A–D, 5E–F) simple proximally but complex distally, with serrated subdisto-ventral sclerite (arrow 1 in Figs 3C View FIGURE 3 , 5E View FIGURE 5 ), bifid subdisto-prolateral sclerite (arrow 2 in Figs 3C View FIGURE 3 , 5E View FIGURE 5 ), long distal membranous lamella (arrow 3 in Figs 3C View FIGURE 3 , 5E View FIGURE 5 ), disto-prolateral spine (arrow 4 in Figs 3C View FIGURE 3 , 5E View FIGURE 5 ), and with narrow retrolateral membranous flap (arrow f in Figs 3D View FIGURE 3 , 5F View FIGURE 5 ); bulb ( Fig. 4A View FIGURE 4 ) 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.