Aurospio cf. dibranchiata
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Ordo: Phyllodocida
Familia: Spionidae
Genus: Aurospio
Name
Aurospio dibranchiata Maciolek, 1981 – Wikispecies link – Pensoft Profile
Diagnosis
Prostomium round anteriorly, elongated posteriorly (keel), extending to middle or the end of chaetiger 1, without appendages. Prostomial peaks and eyes absent. Peristomium fused to first chaetiger, with golden pigments dorsally along posterior margin of the prostomium. Dorsal crests and interparapodial pouches absent. Cirriform branchiae on chaetigers 3 and 4, small, often partially hidden by parapodial dorsal lamellae to which they are fused basally. Dorsal lamellae large and foliaceous from chaetigers 2–6, smaller and round thereafter. Particularly long capillaries present in anterior chaetigers. Multidentate long-shafted hooded hooks present in noto- and neuropodia, in neuropodia starting on chaetigers 10, much later in notopodia according to original description. Sabre chaetae from chaetiger 10.
Remarks
Diagnostic characters are not consistently observable in all specimens due to their poor condition (all anterior fragments, longest anterior fragment with 19 chaetigers). Notopodial hooks were not present in examined specimens (all short anterior fragments). In some specimens a few branchiae were still present and the start of sabre chaetae and neuropodial hooks on chaetigers 10 could be observed. We here tentatively identify the examined specimens as Aurospio cf. dibranchiata Maciolek, 1981. The species is known to occur in deep waters of the Atlantic and central Pacific Oceans, but has not been reported yet from near Australia.
Records
8 specimens. Suppl. material 1: ops. 16, 27, 31, 42, 79 (AM). 10 specimens. Suppl. material 1: ops. 23, 27, 31, 76 (NHMUK).
Taxon Treatment
- Gunton, L; Kupriyanova, E; Alvestad, T; Avery, L; Blake, J; Biriukova, O; Böggemann, M; Borisova, P; Budaeva, N; Burghardt, I; Capa, M; Georgieva, M; Glasby, C; Hsueh, P; Hutchings, P; Jimi, N; Kongsrud, J; Langeneck, J; Meißner, K; Murray, A; Nikolic, M; Paxton, H; Ramos, D; Schulze, A; Sobczyk, R; Watson, C; Wiklund, H; Wilson, R; Zhadan, A; Zhang, J; 2021: Annelids of the eastern Australian abyss collected by the 2017 RV ‘Investigator’ voyage ZooKeys, 1020: 1-198. doi
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