Published December 31, 2009 | Version v1
Taxonomic treatment Open

Belisana yalong Tong & Li, 2009, sp. nov.

Description

Belisana yalong sp. nov.

Figs 10–12, 42–47

Type material: Holotype male, 2 males and 5 females paratypes, CHINA: Hainan Province, Dongfang City, Donghe Town, Yalong Village, a cave without special name (18°58.935´N, 108°53.196´E), 31 March 2005, Y. Song, X. Han, Y. Tong and G. Deng leg.

Etymology: The specific name is a noun in apposition, taken from the type locality.

Diagnosis: The new species is similar to B. ketambe Huber, 2005, but can be distinguished by the cheliceral distal apophyses (tips close together), the shape of procursus and the long bulbal apophyses.

Description: Male (holotype). Total length 1.08 (1.14 with clypeus), carapace width 0.5. Leg 1: 5.58 (1.46+0.18+1.48+1.7+0.76), tibia 2: 0.98, tibia 3: 0.46, tibia 4: 0.76; tibia 1 L/d: 25. Habitus as in figs 10 and 11. Carapace yellowish white, with indistinctive pair of brownish marks laterally, and a narrow median line on ocular area. Sternum whitish. Legs yellowish white, without darker rings. Opisthosoma whitish gray, without marks. Ocular area not elevated, thoracic furrow absent; distance PME-PME 0.04; diameter PME 0.06; distance PME-ALE 0.02; AME absent. Clypeus unmodified. Sternum slightly wider than long (0.4/0.36). Chelicerae as in fig. 45, with pair of curved apophyses, tips 0.13 apart. Palps as in figs 42, 43 and 44; trochanter with short retrolateral apophysis, femur with indistinct hump proximo-dorsally, procursus complicated distally, with ventral membranous flap, bulb with hooked apophysis and simple embolus. Retrolateral trichobothrium of tibia 1 at 36%; legs without spines, vertical hairs, and curved hairs; tarsus 1 apparently with about 20 pseudosegments, but only about 10 quite distinct distally.

Variation. Tibia 1 in other two males: 1.32, 1.45. Distance between tips of distal cheliceral apophyses in other two males: 0.11, 0.12.

Females (paratypes). In general similar to male. Tibia 1 (n = 5): 1.06–1.22 (mean: 1.13). Epigynum simple and flat externally, with indistinctive internal dark structures visible through cuticle (Figs 12, 46), pockets 0.18 apart. Dorsal view as in fig. 47.

Other

Published as part of Tong, Yanfeng & Li, Shuqiang, 2009, Six new cave-dwelling pholcid spiders (Araneae: Pholcidae) from Hainan Island, with two newly recorded genera from China, pp. 17-32 in Zootaxa 1988 on page 24, DOI: 10.5281/zenodo.185475

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Linked records

Additional details

Biodiversity

Family
Pholcidae
Genus
Belisana
Kingdom
Animalia
Order
Araneae
Phylum
Arthropoda
Species
yalong
Taxonomic status
sp. nov.
Taxon rank
species
Taxonomic concept label
Belisana yalong Tong & Li, 2009

References

  • Huber, B. A. (2005) High species diversity, male-female coevolution, and metaphyly in Southeast Asian pholcid spiders: the case of Belisana Thorell 1898 (Araneae, Pholcidae). Zoologica, 155, 1 - 126.