Abstract The genus Eurythenes S. I. Smith in Scudder, 1882, has been the focus of integrated molecular and morphological taxonomy studies in recent years, resulting in the number of species in the genus increasing from three to eight. Samples of Eurythenes spp. collected using free-fall baited traps from the Porcupine Abyssal Plain (PAP), North East Atlantic Ocean, at 4850 m were examined in this study to investigate the identity of the species found using molecular barcoding methods. Mitochondrial COI analysis confirms the presence of E. maldoror at PAP and data from the nuclear 28S rDNA gene provides independent confirmation of this observation. A new, undescribed species that is clearly divergent from all other known species and molecular lineages was identified, which can be distinguished morphologically from known species. A specimen within the E. magellanicus lineage was also found at the site. We discuss the presence of these three Eurythenes species at the Porcupine Abyssal Plain.

中文翻译：

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深海片脚类动物（Eurythenes）的分子系统发育揭示了东北大西洋豪猪深海平原的一个新的未描述物种

摘要 1882 年 Scudder 的 Eurythenes SI Smith 属近年来一直是综合分子和形态分类学研究的重点，导致该属的物种数量从 3 种增加到 8 种。Eurythenes spp 的样本。在这项研究中，使用自由落体诱饵陷阱从东北大西洋豪猪深渊平原 (PAP) 收集的 4850 m 处进行了检查，以研究使用分子条形码方法发现的物种的身份。线粒体 COI 分析证实了 PAP 中存在恶臭大肠杆菌，并且来自核 28S rDNA 基因的数据提供了对这一观察结果的独立确认。确定了一个新的、未描述的物种，它与所有其他已知物种和分子谱系明显不同，它可以在形态上与已知物种区分开来。在该地点还发现了 E. magellanicus 谱系中的一个标本。我们讨论了这三种 Eurythenes 物种在 Porcupine Abyssal Plain 的存在。