Dept. of Invertebrate Zoology, National Museum of Natural History..
Zootaxa. 2021 Jun 2;4980(3):401450. doi: 10.11646/zootaxa.4980.3.1.
Recent expeditions to Rapa Nui (also known as Easter Island) and New Caledonia have revealed undescribed species from mesophotic and deeper depths. This includes three new species from Rapa Nui, Hacelia raaraa, Linckia profunda (Ophidiasteridae), Uokeaster ahi (Asterodiscididae) and two new species from New Caledonia, Astroglypha pyramidata n. gen. and Ophidiaster colossus (Ophidiasteridae). The new genus Astroglypha is described for A. pyramidata but the genus also includes the Atlantic Tamaria passiflora, which is reassigned herein. Pauliastra n. gen. is designated as a replacement for the homonym issue with Pauliella. New occurrences and synonymies are addressed for taxa related to New Caledonia, Rapa Nui and adjacent regions. A morphology based phylogenetic analysis agrees with prior work which placed Goniaster among the Asterodiscididae and posits biogeographic relationships among asterodiscidid genera. Implications for the Goniasteridae and placement of Goniaster among asterodiscidid genera are discussed. Biogeography and relationships among taxa from Rapa Nui and New Caledonia are reviewed. In situ observations from species observed from Rapa Nui are included.
最近对拉帕努伊岛（又称复活节岛）和新喀里多尼亚的考察揭示了来自中深层和更深层的未描述物种。这包括来自拉帕努伊岛的三个新物种，Hacelia raaraa、Linckia profunda（蛇尾科）、Uokeaster ahi（星盘海星科），以及来自新喀里多尼亚的两个新物种，Astroglypha pyramidata n. gen. 和 Ophidiaster colossus（蛇尾科）。新属 Astroglypha 是为 A. pyramidata 而描述的，但该属还包括大西洋 Tamaria passiflora，本文将其重新分配。Pauliastra n. gen. 被指定为解决与 Pauliella 同名问题的替代名称。与新喀里多尼亚、拉帕努伊岛和邻近地区有关的分类群的新发生和同义词问题得到了解决。基于形态的系统发育分析与先前将 Goniaster 置于 Asterodiscididae 中的工作一致，并假设了 asterodiscidid 属之间的生物地理关系。讨论了对 Goniasteridae 的影响以及将 Goniaster 置于 asterodiscidid 属中的位置。审查了来自拉帕努伊岛和新喀里多尼亚的分类群的生物地理学和关系。包括对在拉帕努伊岛观察到的物种的原地观察结果。
