Annelids of the eastern Australian abyss collected by the 2017 RV ' Investigator' voyage Author Gunton, Laetitia M. Australian Museum Research Institute, Sydney, Australia laetitia.gunton@austmus.gov.au Author Kupriyanova, Elena K. Australian Museum Research Institute, Sydney, Australia & Macquarie University, Sydney, Australia Author Alvestad, Tom Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway Author Avery, Lynda Museums Victoria, Melbourne, Australia Author Blake, James A. https://orcid.org/0000-0001-8217-9769 Aquatic Research & Consulting, Duxbury, Massachusetts, USA Author Biriukova, Olga Museum and Art Gallery of the Northern Territory, Darwin, Australia Author Boeggemann, Markus University of Vechta, Vechta, Germany Author Borisova, Polina P. P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia Author Budaeva, Nataliya Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway & P. P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia Author Burghardt, Ingo Australian Museum Research Institute, Sydney, Australia Author Capa, Maria https://orcid.org/0000-0002-5063-7961 Department of Biology, University of the Balearic Islands, Palma, Spain Author Georgieva, Magdalena N. Natural History Museum, London, UK Author Glasby, Christopher J. https://orcid.org/0000-0002-9464-1938 Museum and Art Gallery of the Northern Territory, Darwin, Australia Author Hsueh, Pan-Wen Department of Life Sciences, National Chung Hsing University, Taichung City, China Author Hutchings, Pat Australian Museum Research Institute, Sydney, Australia & Macquarie University, Sydney, Australia Author Jimi, Naoto https://orcid.org/0000-0001-8586-3320 National Institute of Polar Research, Tachikawa, Tokyo, Japan Author Kongsrud, Jon A. Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway Author Langeneck, Joachim https://orcid.org/0000-0003-3665-8683 Department of Biology, University of Pisa, Pisa, Italy Author Meissner, Karin Forschungsinstitut Senckenberg, DZMB, Hamburg, Germany Author Murray, Anna https://orcid.org/0000-0002-1765-1286 Australian Museum Research Institute, Sydney, Australia Author Nikolic, Mark Museums Victoria, Melbourne, Australia Author Paxton, Hannelore https://orcid.org/0000-0001-7086-5219 Australian Museum Research Institute, Sydney, Australia & Macquarie University, Sydney, Australia Author Ramos, Dino https://orcid.org/0000-0002-4069-5383 Natural History Museum, London, UK Author Schulze, Anja Texas A & M University at Galveston, Galveston, TX, USA Author Sobczyk, Robert Department of Zoology of Invertebrates and Hydrobiology, University of Lodz, Lodz, Poland Author Watson, Charlotte Museum and Art Gallery of the Northern Territory, Darwin, Australia Author Wiklund, Helena Natural History Museum, London, UK & Gothenburg Global Biodiversity Centre and University of Gothenburg, Gothenburg, Sweden Author Wilson, Robin S. https://orcid.org/0000-0002-9441-2131 Museums Victoria, Melbourne, Australia Author Zhadan, Anna Biological Faculty, Lomonosov Moscow State University, Moscow, Russia Author Zhang, Jinghuai South China Sea Environmental Monitoring Centre, State Oceanic Administration, Guangzhou, China text ZooKeys 2021 2021-02-24 1020 1 198 http://dx.doi.org/10.3897/zookeys.1020.57921 journal article http://dx.doi.org/10.3897/zookeys.1020.57921 1313-2970-1020-1 CC23B8CE8C8E473CBD8C44E74252A33D F6561609F0F15EE8907C94528CA44E4F cf. Vrijenhoekia sp. nov. 1 Fig. 12G Diagnosis. Two complete specimens, 22 chaetigers (i.e., appears to be fixed growth of maximum 22 chaetigers). Prostomium subrectangular (broader than long), one pair lateral antennae, long, tapered, extending to tip of palps or 2 x longer; median antenna absent. Small red eyespots present, two or three pairs. Palps bi-articulate, palpostyle oval to globulose, slightly longer than palpophore. Proboscis with ten digitate terminal papillae and micro-papillae on surface; jaws absent. Facial tubercle absent. First three segments tentacular, achaetous, bearing six pairs tentacular cirri, slender, longest almost half length of body. Parapodia uniramous throughout, bearing digitate prechaetal lobe; dorsal and ventral cirri slender, tapered, similar in length throughout: ~ 0.5-1 x length of parapodial lobes, except for first and second pairs which are many times longer than parapodial lobe (similar in length to tentacular cirri). Ventral cirri inserted subterminally. Fan-like supra- and sub-neuropodial fascicles, bearing compound spinigers only, all with similar-length blades. Colour in ethanol yellow-white, unpigmented. Remarks. The present specimens are closer to Vrijenhoekia than any other described hesionid genus, but differ from its type species, Vrijenhoekia balaenophila , and from V. cf. ketea as described above, as follows: a mediodorsal prostomial process (tubercle or antenna) was not observed (present in other members of the genus though minute and probably only observable clearly with scanning electron microscopy); palpostyles are globulose in the present material vs. tapered; compound chaetae blades are relatively longer in the present material; and the present specimens appear to have a maximum of 22 chaetigers, whereas there are 35 in the type species (this character is not reported in other species of the genus). On the other hand, the present material resembles more closely the type species than V. cf. ketea in having ten digitate proboscideal papillae (absent in the latter). The globulose (= ovoid) palpostyles are the most distinctive feature of the species. Records. 13 specimens. Suppl. material 1: ops. 11, 23, 31, 40, 42, 45, 46, 54, 96 (AM).