Review of the spider genus Solenysa Simon, 1894 in Western Japan and Central Ryukyu with the description of three new species (Araneae, Linyphiidae)

By

Ballarin, Francesco
Liao, Hauchuan
Touyama, Zento
Eguchi, Katsuyuki

Type

Article

Date of Publication

2025

Original Publication

ZooKeys

Volume

1232

Pages

97--130

Subjects

Amami-Ōshima , endemic species , island biogeography , Kyushu , Okinawa , Ryukyu Archipelago , Yambaru National Park

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1232.142629

 

Abstract

Three new species of the genus Solenysa Simon, 1894 are recorded and described from Western Japan, all based on both sexes. Of these, two species are endemic to the Ryukyu Archipelago: S. shimatchu Ballarin & Eguchi, sp. nov. from Amami-Ōshima Island, and S. yambaruensis Ballarin & Eguchi, sp. nov. from Okinawa Honto and Kume-jima Islands. These species represent the first record of the genus Solenysa for the Central Ryukyus and belong to a newly defined species group. Another new species, S. bilamellata Ballarin & Eguchi, sp. nov. is recorded from eastern Kyushu in mainland Japan and belongs to the mellotteei group. The phylogenetic positions of the new species are discussed based on morphological and molecular data. New records, remarks, and photos of genitalia of other poorly known Solenysa species from surrounding areas (Taiwan, Kyushu, Shikoku, and western Honshu) are provided to facilitate future identifications.