A new species of chionelasmatid sessile vent barnacle, Eochionelasmus coreana sp. nov., is described and illustrated on the basis of specimens collected from the Solitaire hydrothermal vent field in the Central Indian Ridge of the Indian Ocean. This new species is morphologically very similar to E. ohtai, the type species of the genus Eochionelasmus. However, it differs from E. ohtai in its distribution, the status of the notch on the maxillule, and the positions of rl1 and cl1 on whorls of the imbricating plates. In addition, a molecular phylogenetic tree indicated that the chionelasmatid Eochionelasmus was closely related to the waikalasmatid Waikalasma with high supporting values rather than the other chionelasmatid Chionelasmus. The new species is not only the first record of a sessile vent barnacle from outside of the Pacific Ocean, but is also the first sessile barnacle from the Indian Ocean.

中文翻译：

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在印度洋的热液喷口场首次发现无柄藤壶 Eochionelasmus (Cirripedia: Balanomorpha)

chionelasmatid 无柄发泄藤壶的一个新种，毛细线虫sp。11 月 1 日，根据从印度洋中部印度洋脊的 Solitaire 热液喷口场采集的标本进行描述和说明。这个新物种在形态上非常相似E. ohtai, 属的模式种棘球绦虫. 然而，它不同于E. ohtai在其分布中，上颌骨缺口的状态，以及重叠板螺纹上rl1和cl1的位置。此外，分子系统发育树表明，chionelasmatid棘球绦虫与 waikalasmatid 密切相关怀卡拉斯玛具有较高的支持值，而不是其他的chionelasmatid黄褐斑. 这一新物种不仅是第一个来自太平洋以外的无柄喷口藤壶的记录，也是第一个来自印度洋的无柄藤壶。