Pockmarks are crater-like depressions in seabed sediments commonly found along continental margins and generally associated with episodic fluid seepage. In this study, we describe a new species of Chloeia (Amphinomidae) gathered from a pockmark field, located off the southeastern Brazilian continental margin (∼750 m depth), SW Atlantic. The complete mitochondrial genome is given, together with a multi-gene phylogenetic analysis including our new species and other amphinomids. The new species is similar to Chloeia bimaculata, C. violacea and C. kudenovi in having the longest neuropodial cirri on the second chaetiger. Chloeia pocicola sp. nov. differs from these congeners mainly by the combination of its dorsal pigmentation pattern, eyes, notopodial cirri, and neuropodial chaetae. Our phylogenetic hypothesis suggests Chloeia as a sister group of Archinome, which departs from previous studies, that instead suggests the clade Chloeia-Notopygos. This study increases our knowledge on the biodiversity of deep-sea pockmark environments, and contribute to the systematics of Amphinomidae, which is generally well represented in shallow waters, but also occurs in deep waters, including chemosynthetic environments.

麻点是通常在大陆边缘发现的海底沉积物中的火山口状凹陷，通常与间歇性流体渗漏有关。在这项研究中，我们描述了一种新的Chloeia（Amphinomidae）物种，该物种是从一个位于巴西东南部大陆边缘（约750 m深度）西南大西洋的麻子田采集的麻子。给出了完整的线粒体基因组，并进行了多基因系统发育分析，包括我们的新物种和其他两性霉素。新种与Chloeia双斑，C. violacea和Ç。kudenovi在第二只象角兽中具有最长的神经足毛刺。南美白对虾sp。十一月 与这些同类动物的不同之处主要在于其背侧色素沉着模式，眼睛，三足类触毛和神经足po骨。我们的系统发育假说表明，Chloeia是Archinome的姊妹群体，它与先前的研究背道而驰，而是暗示了Chloeia - Notopygos进化枝。这项研究增加了我们对深海麻子环境的生物多样性的了解，并有助于两栖动物的系统，这在浅水区通常能很好地体现出来，但在包括化学合成环境在内的深水区​​也能发生。