Abstract

During a recent cruise to investigate the cold-water coral habitats in the eastern Gulf of Mexico seven scale worm species (Polychaeta: Aphroditiformia) were found, with four of them new to science:Laetmonice tunicatasp. nov. (Aphroditidae);Eunoe purpureaTreadwell, 1936,Gorgoniapolynoe caeciliae(Fauvel, 1913),Harmothoe dannyisp. nov.,Harmothoe cedricisp. nov. andSubadyte campechensissp. nov. (Polynoidae); andLeanira robustaVerrill, 1885 (Sigalionidae). An extended taxonomic account is given for all species, with detailed descriptions and figures for the new species. Three of the five polynoid species were found associated with a coral host:E. purpureawithBathypathescf.alternataBrook, 1898 (Antipatharia);G. caeciliaewithAcanthogorgia armataVerrill, 1878 andCandidella imbricata(Johnson, 1862) (Octocorallia) andH. dannyisp. nov. withStylaster erubescensPourtalès, 1868 (Hydrozoa). These associations are characterized in detail and documented byin situROV pictures and microscopic images and videos of the live animals, together with their respective host.

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