Benthic samples collected during several cruises from shelf areas along the West African coast from Morocco to Angola, have highlighted a huge diversity of magelonid species (over 20 species), many of which are undescribed. The majority of samples were taken as part of two large-scale projects in the region: the Canary Current Large Marine Ecosystem project (CCLME) and the Guinea Current Large Marine Ecosystem project (GCLME). Six magelonid species bearing posterior thoracic pigmentation have been highlighted, Magelona alleni and five species new to science: Magelona fasciata sp. nov., Magelona guineensis sp. nov., Magelona mackiei sp. nov., Magelona nanseni sp. nov. and Magelona picta sp. nov. West African magelonids and comparative material from the UK and Norway have been investigated using COI, 16S and 28S markers. An integrated taxonomic approach is used to delineate species of Magelona carrying posterior thoracic pigmentation. These species from West African waters constitute a well-supported monophyletic group, with the species M. alleni being sister to the new species herein described. Our 41 COI DNA-barcode-sequences had between species distances from 9.3 to 26.8% and were allocated to ten different BINs in Boldsystems.org.

中文翻译：

---

西非 Magelona (Annelida: Magelonidae) 的综合分类学：胸部色素沉着的物种

在从摩洛哥到安哥拉的西非海岸陆架区域的几次航行中收集的底栖样本突出显示了 magelonid 物种（超过 20 种）的巨大多样性，其中许多没有描述。大部分样本是该地区两个大型项目的一部分：加那利洋流大型海洋生态系统项目（CCLME）和几内亚洋流大型海洋生态系统项目（GCLME）。六种具有后胸色素沉着的magelonid 物种被突出显示，Magelona alleni 和五种新的科学物种：Magelona fasciata sp。十一月，Magelona guineensis sp。十一月，Magelona mackiei sp。十一月，Magelona nanseni sp。十一月 和 Magelona picta sp。十一月 已使用 COI、16S 和 28S 标记对来自英国和挪威的西非 magelonids 和比较材料进行了调查。一种综合的分类学方法用于描述携带胸部后色素沉着的 Magelona 物种。这些来自西非水域的物种构成了一个得到充分支持的单系群，其中 M. alleni 物种是本文描述的新物种的姐妹。我们的 41 个 COI DNA 条形码序列的物种间距离为 9.3% 到 26.8%，并被分配到 Boldsystems.org 中的 10 个不同的 BIN。