Ballarin Francesco, Eguchi Katsuyuki
Systematic Zoology Laboratory, Department of Biological Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, 192-0397, Tokyo, Japan Tokyo Metropolitan University Tokyo Japan.
Department of Zoology, Museo di Storia Naturale of Verona, Lungadige Porta Vittoria, 9, I-37129 Verona, Italy Museo di Storia Naturale of Verona Verona Italy.
Zookeys. 2023 Aug 11;1174:219-272. doi: 10.3897/zookeys.1174.101251. eCollection 2023.
The Japanese species of the genera Lehtinen & Saaristo, 1980 and Lehtinen & Saaristo, 1980 (Araneae, Nesticidae, Nesticellini) are revised using an integrative taxonomic approach. Their morphology, phylogenetic position within the genera, assignment to species groups, and distribution in mainland Japan and the Ryukyu islands are discussed herein. A phylogenetic and species delimitation analysis was conducted to confirm the boundaries between the putative species that were initially discriminated based on external and genital morphology. As a result of the present study, six species of and three species of are proposed for the fauna of Japan based on the combined results of morphology and molecular analyses. Male and female of the previously known species (Yaginuma, 1972), (Yaginuma, 1970), and (Yaginuma, 1979) are redescribed and illustrated using type specimens or specimens collected at the type locality. (Yaginuma, 1970) is resurrected as a valid species and distinguished from the closely related based on morphological and molecular evidence. The male of is described for the first time. We herein describe three new species of and two new species of from different islands in the Ryukyu Archipelago, southwest Japan: (♂, ♀) from Yonaguni-jima Island, (♀) from Ishigaki-jima Island, (♂, ♀) from Yakushima Island, (♂, ♀) from Miyako-jima Island and (♀) from Okinoerabu-jima Island. , and dwell exclusively in caves and show extensive morphological adaptation to subterranean life.
本文采用综合分类学方法对1980年Lehtinen和Saaristo属（蜘蛛目，球蛛科，球蛛亚科）的日本物种进行了修订。讨论了它们的形态、在属内的系统发育位置、物种组归属以及在日本本土和琉球群岛的分布。进行了系统发育和物种界定分析，以确认最初根据外部和生殖器形态区分的假定物种之间的界限。根据形态学和分子分析的综合结果，本文为日本动物区系提出了6种[具体属名未给出]和3种[具体属名未给出]。使用模式标本或在模式产地采集的标本，重新描述并图示了先前已知物种[具体种名未给出]（矢野，1972年）、[具体种名未给出]（矢野，1970年）和[具体种名未给出]（矢野，1979年）的雄性和雌性。[具体种名未给出]（矢野，1970年）根据形态学和分子证据被重新认定为有效物种，并与近缘种[具体种名未给出]区分开来。首次描述了[具体种名未给出]的雄性。本文描述了来自日本西南部琉球群岛不同岛屿的3种[具体属名未给出]新物种和2种[具体属名未给出]新物种：来自与那国岛的[具体种名未给出]（♂，♀）、来自石垣岛的[具体种名未给出]（♀）、来自屋久岛的[具体种名未给出]（♂，♀）、来自宫古岛的[具体种名未给出]（♂，♀）和来自冲永良部岛的[具体种名未给出]（♀）。[具体种名未给出]、[具体种名未给出]和[具体种名未给出]仅栖息于洞穴中，并表现出对地下生活的广泛形态适应。
