Enchytraeid worms collected in South Africa and on the Marion, South Orkney, South Georgia and South Shetland Islands during 2008–2015 were studied using morphology and seven genetic markers. Nine species were recognized: one terrestrial (Christensenidrilus blocki) and all the others marine littoral (five Lumbricillus and three Marionina s.s.). An estimated phylogeny including other enchytraeids from the Northern Hemisphere, many of which are members of Lumbricillus and some representing Marionina s.l., confirmed a non-monophyletic Lumbricillus, with some of its current species closely related to Grania or Marionina s.s. The phylogeny also corroborated a non-monophyletic Marionina s.l., with Marionina s.s. closely related to Grania and Lumbricillus s.l., but not to the remaining sequenced ‘Marionina’ or to Ch. blocki. These results provide a long-needed starting point for a revision of both Marionina and Lumbricillus. We provide morphological descriptions of all nine species, three of which are new to science: Lumbricillus finisafricae sp. nov., Lumbricillus nivalis sp. nov., and Marionina fusca sp. nov. Comments on three related species of Marionina s.s. based on re-examined type material are also provided.

中文翻译：

---

从南半球样本推断出的对 Lumbricillus 和 Marionina (Clitellata: Enchytraeidae) 系统学的新见解，包括三个新物种

使用形态学和七个遗传标记研究了 2008-2015 年期间在南非和马里恩、南奥克尼、南乔治亚和南设得兰群岛收集的 Enchytraeid 蠕虫。九种被识别：一种陆地（Christensenidrilus blocki）和所有其他海洋沿海（五种Lumbricillus 和三种Marionina ss）。估计的系统发育包括来自北半球的其他 enchytraeids，其中许多是 Lumbricillus 的成员，一些代表 Marionina sl，证实了非单系 Lumbricillus，其当前的一些物种与 Grania 或 Marionina ss 密切相关。系统发育也证实了非-单系 Marionina sl，其中 Marionina ss 与 Grania 和 Lumbricillus sl 密切相关，但与剩余的测序“Marionina”或 Ch。布洛克 这些结果为修订 Marionina 和 Lumbricillus 提供了一个长期需要的起点。我们提供所有九个物种的形态描述，其中三个是科学新物种：Lumbricillus finisafricae sp。nov., Lumbricillus nivalis sp. 十一月，和 Marionina fusca sp。十一月 还提供了基于重新检查的类型材料对三种相关的 Marionina ss 物种的评论。