Belisana mengla Zhu, Yao, Zheng, and Li 2020
- Dataset
- Three new species of the spider genus Belisana Thorell, 1898 (Araneae: Pholcidae) from Xishuangbanna, Yunnan, China
- Rank
- SPECIES
- Published in
- Zhu, Wenhui, Yao, Zhiyuan, Zheng, Guo, Li, Shuqiang (2020): Three new species of the spider genus Belisana Thorell, 1898 (Araneae: Pholcidae) from Xishuangbanna, Yunnan, China. Zootaxa 4742 (2): 332-342, DOI: 10.11646/zootaxa.4742.2.6
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Pholcidae
- genus
- Belisana
- species
- Belisana mengla
description
Description. Male (holotype): Total length 1.50 (1.61 with clypeus), carapace 0.73 long, 0.63 wide, opisthosoma 0.77 long, 0.56 wide. Leg I: 11.32 (3.80 + 0.40 + 2.64 + 3.36 + 1.12), leg II: — (2.19 + 0.31 + 2.00 + 2.91 + –), leg III missing, leg IV: — (2.10 + 0.50 + 1.75 + 2.35 + –); tibia I L / d: 42. Habitus as in Figs 2 E – F. Carapace and sternum pale, without marks. Legs pale, without darker rings. Opisthosoma pale, without spots. Distance PME- PME 0.13, diameter PME 0.08, distance PME-ALE 0.03, AME absent. Ocular area not elevated. Thoracic furrow absent. Clypeus unmodified. Sternum approximately as wide as long (0.64). Chelicerae (Fig. 2 D) with pair of small proximo-lateral apophyses and pair of long, curved distal apophyses each provided with modified seta on its tip (distance between tips: 0.42). Pedipalps as in Figs 1 A – B; coxa unmodified; trochanter with very short retrolateroventral apophysis (arrow in Fig. 1 B); femur with small dorsal apophysis proximally (arrow in Fig. 1 A); procursus (Figs 1 A – D) simple proximally but complex distally, with angular distal sclerite retrolaterally (arrow 1 in Fig. 1 D) and large, flat, distal membranous lamella (arrow 2 in Fig. 1 D); bulb (Fig. 2 C) with hooked apophysis and wide embolus. Retrolateral trichobothria of tibia I at 13 % proximally; legs with short vertical setae on metatarsi, without spines and curved setae; tarsus I with 17 distinct pseudosegments. Female (IZCAS Ar 39746): Similar to male, habitus as in Figs 2 G – H. Total length 1.40 (1.52 with clypeus), carapace 0.68 long, 0.56 wide, opisthosoma 0.72 long, 0.68 wide; tibia I: 1.42; tibia I L / d: 37. Distance PME-PME 0.14, diameter PME 0.08, distance PME-ALE 0.03, AME absent. Sternum approximately as wide as long (0.58). Epigynum (Fig. 2 A) simple and flat, with pair of pockets 0.47 apart (ep in Figs 2 A – B) and several subcuticular teeth. Vulva (Fig. 2 B) with ridge-shaped anterior arch and pair of narrow, curved pore plates far apart.
description
Figs 1 – 2
diagnosis
Diagnosis. This species resembles B. yangxiaodongi Yao & Li, 2018 (see Yao et al. 2018: 255, figs 9 – 10, 11 E, 12 E) with similar male chelicerae (Fig. 2 D), bulbal apophyses (Fig. 2 C) and vulva (Fig. 2 B) but can be distinguished by presence of dorsal apophysis proximally on pedipalpal femur (arrow in Fig. 1 A), absence of spine distally and membranous flap retrolaterally on procursus (Figs 1 A – D), presence of angular distal sclerite retrolaterally (arrow 1 in Fig. 1 D) and large, flat, distal membranous lamella (arrow 2 in Fig. 1 D) on procursus, and by presence of subcuticular teeth on epigynum (Fig. 2 A).
distribution
Distribution. China (Yunnan, type locality; Fig. 7).
etymology
Etymology. The specific name refers to the type locality and is a noun in apposition.
materials_examined
Type material. Holotype: Male (IZCAS Ar 39745), Xiaolongha Village, (21 ° 24 ’ 19.8 ” N, 101 ° 37 ’ 01.3 ” E, elevation 801 ± 22 m), Mengla County, Xishuangbanna, Yunnan, China, 30 June 2012, Q. Zhao and Z. Chen leg. Paratype: 1 female (IZCAS Ar 39746), same data as holotype.