TY - JOUR A1 - Säring, Friederike A1 - Bick, Andreas A1 - Link, Heike T1 - A new species of Anobothrus (Polychaeta, Ampharetidae) from the Weddell Sea (Antarctica), with notes on habitat characteristics and an updated key to the genus T2 - European journal of taxonomy N2 - Benthic samples were collected during two expeditions near the Antarctic Peninsula and in the South-Eastern Weddell Sea. During these studies, a new species of Ampharetidae Malmgren, 1867, Anobothrus konstantini Säring & Bick sp. nov., was found. Here we present a detailed description of this species. We used the traditional light microscope and scanning electron microscope (SEM) to identify and describe the diagnostic characters: a circular glandular band on segment 6; an elongate ridge between the notopodia on segment 12 and modified notochaetae on this segment; 16 thoracic, two intermediate and ten abdominal segments. For the first time, micro-computed tomography (micro-CT) was used for a species description of Anobothrus. Micro-CT provided information on the shape of the prostomium (Ampharete-type) and the arrangement of branchiae (four pairs in two rows, without a gap). In addition, we provide quantitative information on the environmental niche based on sediment parameters (chlorophyll a content, organic matter content, chloroplast equivalent, grain size) for the new Anobothrus species, relevant for, e.g., species distribution modelling. Finally, an identification key for all Anobothrus species is provided. T3 - European journal of taxonomy : EJT - 789:130-152 KW - Anobothrus konstantini Säring & Bick sp. nov. KW - Antarctic Peninsula KW - ecology KW - Filchner Trough KW - micro-CT analysis KW - SEM Y1 - 2022 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/65141 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-651413 SN - 2118-9773 VL - 2022 IS - 789 SP - 130 EP - 152 PB - Muséum National d'Histoire Naturelle CY - Paris ER -