Taxa included

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.

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

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