Belisana guilin Yao & Li, 2020

Zhu, Wenhui, Yao, Zhiyuan, Zheng, Guo & Li, Shuqiang, 2020, Six new species of the spider genus Belisana Thorell, 1898 (Araneae: Pholcidae) from southern China, Zootaxa 4810 (1), pp. 175-197 : 176-179

publication ID	https://doi.org/ 10.11646/zootaxa.4810.1.12
publication LSID	lsid:zoobank.org:pub:424415DC-807E-493A-8883-903D2ADE9427
DOI	https://doi.org/10.5281/zenodo.10564675
persistent identifier	https://treatment.plazi.org/id/039FEF34-3D0F-FFCA-FF3C-F3749471FD28
treatment provided by	Plazi
scientific name	Belisana guilin Yao & Li
status	sp. nov.

Treatment

Belisana guilin Yao & Li View in CoL sp. nov.

Figs 1–2 View FIGURE 1 View FIGURE 2 , 13 View FIGURE 13 A–B, 14A–B

Type material. Holotype: Male ( IZCAS Ar39846), Unnamed cave (25°12’56.00”N, 110°09’17.90”E, elevation 144 m), S306 Provincial Road , 30 meters east of Feihulinju , Lingui District, Guilin, Guangxi, China, 6 December 2012, Z. Chen and Z. Zhao leg. GoogleMaps Paratypes: 1 male ( IZCAS Ar39847) and 2 females ( IZCAS Ar39848–39849), 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. longinqua Zhang & Peng, 2011 (see Zhang & Peng 2011: 58, fig. 5, male only) with similar male chelicerae ( Fig. 2D View FIGURE 2 ) and bulbal apophyses ( Fig. 2C View FIGURE 2 ) and resembles B. colubrina Zhang & Peng, 2011 (see Zhang & Peng 2011: 64, fig. 9) with similar bulbal apophyses ( Fig. 2C View FIGURE 2 ) and external female genitalia ( Figs 2A View FIGURE 2 , 14A View FIGURE 14 ), but can be distinguished by presence of large, disto-prolateral membranous lamella (arrow 1 in Figs 1C View FIGURE 1 , 13A View FIGURE 13 ) and protruding subdisto-dorsal sclerite (arrow 2 in Figs 1C View FIGURE 1 , 13A View FIGURE 13 ) on procursus, by short retrolatero-ventral apophysis of male pedipalpal trochanter ( Fig. 1B View FIGURE 1 ), and by absence of marks on carapace ( Fig. 2E View FIGURE 2 ); also distinguished from B. longinqua by presence of small proximo-dorsal hump on male pedipalpal femur (arrow in Fig. 1B View FIGURE 1 ) and from B. colubrina by male cheliceral distal apophyses directed toward downward (arrow da in Fig. 2D View FIGURE 2 ) and vulval pore plates not strongly curved (arrow pp in Figs 2B View FIGURE 2 , 14B View FIGURE 14 ).

Description. Male (holotype, IZCAS Ar39846): Total length 1.68 (1.78 with clypeus), carapace 0.74 long, 0.68 wide, opisthosoma 0.94 long, 0.90 wide. Leg I: 16.84 (4.10 + 0.43 + 4.62 + 6.41 + 1.28), leg II: 10.89 (3.01 + 0.38 + 2.69 + 4.17 + 0.64), leg III: 7.44 (2.12 + 0.26 + 1.86 + 2.49 + 0.71), leg IV: 10.07 (3.27 + 0.32 + 2.44 + 3.27 + 0.77); tibia I L/d: 74. Distance PME-PME 0.09, diameter PME 0.06, distance PME-ALE 0.03, AME absent. Sternum slightly wider than long (0.60/0.50). Habitus as in Figs 2 View FIGURE 2 E–F. Carapace and sternum pale, without marks. Legs pale, without darker rings. Opisthosoma yellowish white, without spots. Ocular area not elevated. Thoracic furrow absent. Clypeus unmodified. Chelicerae ( Fig. 2D View FIGURE 2 ) with pair of small proximo-lateral apophyses and pair of long, curved distal apophyses (distance between tips of distal apophyses: 0.31). Pedipalps as in Figs 1 View FIGURE 1 A–B; coxa unmodified; trochanter with short retrolatero-ventral apophysis; femur with small proximo-dorsal hump (arrow in Fig. 1B View FIGURE 1 ); procursus ( Figs 1 View FIGURE 1 A–D, 13A–B) simple proximally but complex distally, with large, disto-prolateral membranous lamella (arrow 1 in Figs 1C View FIGURE 1 , 13A View FIGURE 13 ), small subdisto-dorsal sclerite (arrow 2 in Figs 1C View FIGURE 1 , 13A View FIGURE 13 ), large subdistoprolateral sclerite (arrow 3 in Figs 1C View FIGURE 1 , 13A View FIGURE 13 ), curved distal spine and large retrolateral membranous flap (arrow f in Figs 1D View FIGURE 1 , 13B View FIGURE 13 ); bulb ( Fig. 2C View FIGURE 2 ) 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 24 distinct pseudosegments.

Female (IZCAS Ar39848): Similar to male, habitus as in Figs 2 View FIGURE 2 G–H. Total length 1.50 (1.66 with clypeus), carapace 0.56 long, 0.63 wide, opisthosoma 0.94 long, 0.94 wide. Tibia I: 2.88; tibia I L/d: 58. Distance PME-PME 0.08, diameter PME 0.04, distance PME-ALE 0.03, AME absent. Sternum approximately as wide as long (0.47). External female genitalia ( Figs 2A View FIGURE 2 , 14A View FIGURE 14 ) simple and flat, with pair of frontal “epigynal” pockets postero-laterally on scletotized plate (arrow ep in Figs 2 View FIGURE 2 A–B, 14A–B), 0.28 apart. Vulva ( Figs 2B View FIGURE 2 , 14B View FIGURE 14 ) with roof-shaped anterior arch and pair of long, narrow pore plates (arrow pp in Figs 2B View FIGURE 2 , 14B View FIGURE 14 ), without serrated sclerites.