Belisana desciscens, Tong, Yanfeng & Li, Shuqiang, 2009

Tong, Yanfeng & Li, Shuqiang, 2009, Six new cave-dwelling pholcid spiders (Araneae: Pholcidae) from Hainan Island, with two newly recorded genera from China, Zootaxa 1988, pp. 17-32 : 18

publication ID

https://doi.org/ 10.5281/zenodo.185475

DOI

https://doi.org/10.5281/zenodo.6216779

persistent identifier

https://treatment.plazi.org/id/777F8C78-FFCC-FFA2-30EE-FC7295934502

treatment provided by

Plazi

scientific name

Belisana desciscens
status

sp. nov.

Belisana desciscens View in CoL sp. nov.

Figs 1–3 View FIGURES 1 – 23 , 24–29 View FIGURES 24 – 29

Type material: Holotype male, 3 females paratypes, CHINA: Hainan Province, Haikou City, Yongxing Town, Cave No. 3 (19°53.880´N, 110°14.978´E), 17 March 2005, Y. Song, X. Han, Y. Tong and G. Deng leg.; 2 females paratypes, Cave No. 1 (19°53.691´N, 110°14.880´E), other data same as for holotype.

Etymology: The specific name is a participium from Latin, in reference to the absence of the sclerotized apophysis on male palpal bulb.

Diagnosis: The new species can be easily distinguished from other known species by the following characters: the absence of male palpal bulbal apophysis, shapes of male procursus and cheliceral apophyses.

Description: Male (holotype). Total length 0.92 (1.12 with clypeus), carapace width 0.49. Leg 1: 8.59 (2.21+0.22+2.28+2.97+0.91), tibia 2: 1.38, tibia 3: 0.87, tibia 4: 1.48; tibia 1 L/d: 41. Carapace yellow, with brown marks laterally; sternum yellowish; legs yellow, without darker rings; opisthosoma pale white, without spots. Ocular area not elevated, thoracic furrow absent; distance PME-PME 0.05; diameter PME 0.05; distance PME-ALE 0.02; AME absent. Clypeus unmodified. Sternum nearly as long as wide (0.42). Chelicerae as in fig. 26, with pair of frontal curved apophyses, tips 0.31 apart. Palps as in figs 24, 25 and 27; trochanter with short retrolateral apophysis, femur with indistinct hump proximo-dorsally, procursus complicated distally, with ventral membranous flap, bulb with complicated embolus, without sclerotized apophysis. Retrolateral trichobothrium of tibia 1 at 19%; legs without spines, vertical hairs, and curved hairs; tarsus 1 with some pseudosegments, but only 10 distinct distally.

Females (paratypes). In general similar to male. Habitus as in figs 1 and 2. Tibia 1 (n = 5): 1.93–2.03 (mean: 1.97). Epigynum simple and flat externally, with distinctive internal dark structures visible through cuticle ( Figs 3 View FIGURES 1 – 23 , 28 View FIGURES 24 – 29 ), pockets 0.28 apart. Dorsal view as in fig. 29.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Belisana

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