World Spider Catalog

Genus: Porrhomma Simon, 1884 | Family: Linyphiidae Blackwall, 1859

Porrhomma rakanum Yaginuma & Saito, 1981

SPECIES | ACCEPTED

LSID: urn:lsid:nmbe.ch:spidersp:012429

Permalink: https://wsc.nmbe.ch/lsid/urn:lsid:nmbe.ch:spidersp:012429

Described:

Distribution: Japan

External Resources*: GBIF

Type Repository Provide information

Holotype: Department of Zoology of the National Museum of Nature and Science (NSMT-Ar), Tokyo, Japan m - (Yaginuma & Saito, 1981)
Paratype: Department of Zoology of the National Museum of Nature and Science (NSMT-Ar), Tokyo, Japan 5f - (Yaginuma & Saito, 1981)
Paratype: Collection of the Arachnological Society of Japan (CASJ), Otemon Gakuin University, Osaka, Japan 4m 10f 1jm (some of them in the collections of the collectors and the authors) - (Yaginuma & Saito, 1981)

Taxonomic References

Porrhomma rakanum Yaginuma & Saito, 1981: 33, f. 1-4 (Dmf) Original description

Porrhomma rakanum Yaginuma, 1986a: 86, f. 46.8 (mf)

Porrhomma rakanum Li & Song, 1993: 250 (S of Porrhomma longjiangense, revalidated by Marusik & Koponen, 2000: 62)

Porrhomma rakanum Ono, Matsuda & Saito, 2009: 332, f. 1116-1118 (mf)

Porrhomma rakanum Růžička, 2018: 58, f. 51A-E (mf)

Porrhomma rakanum Ballarin et al., 2026c: 442, f. 24A-E, 25G-H (mf)

References

Ballarin, F., Nagai, T., Yamasaki, T. & Eguchi, K. (2026c). New species and new records of cave-dwelling money spiders from Japan with remarks on the genera Anguliphantes, Arcuphantes, Nihonella, Micrargus, and Porrhomma (Araneae, Linyphiidae). Zootaxa 5828(3): 401-449. doi: 10.11646/zootaxa.5828.3.1 [[Zoobank: 754F4AB9-A158-4DF6-AA3F-A578CC1BE27B]] -- Show included taxa

Li, S. Q. & Song, D. X. (1993). On the diagnostic characters of linyphiid spiders, with descriptions of some species (Araneae: Linyphiidae). Scientific Treatise on Systematic and Evolutionary Zoology 2: 247-256. -- Show included taxa

Ono, H., Matsuda, M. & Saito, H. (2009). Linyphiidae, Pimoidae. In: Ono, H. (ed.) The spiders of Japan with keys to the families and genera and illustrations of the species. Tokai University Press, Kanagawa, pp. 253-344. -- Show included taxa

Růžička, V. (2018). A review of the spider genus Porrhomma (Araneae, Linyphiidae). Zootaxa 4481(1): 1-75. doi: 10.11646/zootaxa.4481.1.1 -- Show included taxa

Yaginuma, T. & Saito, H. (1981). A new cave spider of the genus Porrhomma (Araneae, Linyphiidae) found in a limestone cave of Shikoku, southwest Japan. Journal of the Speleological Society of Japan 6: 33-36. -- Show included taxa

Yaginuma, T. (1986a). Spiders of Japan in color (new ed.). Hoikusha Publishing Co., Osaka, 305 pp., 64 pls. -- Show included taxa

External Resource References

* Disclaimer
As External Resources, the World Spider Catalog links here to species pages of other databases. They may contain further information for the given species. The databases, listed as External Resources, however, are not managed by World Spider Catalog and the information given there is not necessarily in agreement with the World Spider Catalog. All responsibility for such data is with the external database.

GBIF.org (2026). GBIF Home Page (via GBIF API). Available from: https://www.gbif.org [8 January 2026]

Edit History

Date	Type	Reference	Old value	Comment
2026-06-10	New taxonomic reference entry	Ballarin et al., 2026c
2018-09-14	New taxonomic reference entry	Růžička, 2018