Anchinothria cf. pycnobranchiata (McIntosh, 1885)

Gunton, Laetitia M., Kupriyanova, Elena K., Alvestad, Tom, Avery, Lynda, Blake, James A., Biriukova, Olga, Boeggemann, Markus, Borisova, Polina, Budaeva, Nataliya, Burghardt, Ingo, Capa, Maria, Georgieva, Magdalena N., Glasby, Christopher J., Hsueh, Pan-Wen, Hutchings, Pat, Jimi, Naoto, Kongsrud, Jon A., Langeneck, Joachim, Meissner, Karin, Murray, Anna, Nikolic, Mark, Paxton, Hannelore, Ramos, Dino, Schulze, Anja, Sobczyk, Robert, Watson, Charlotte, Wiklund, Helena, Wilson, Robin S., Zhadan, Anna & Zhang, Jinghuai, 2021, Annelids of the eastern Australian abyss collected by the 2017 RV ' Investigator' voyage, ZooKeys 1020, pp. 1-198 : 1

Anchinothria cf. pycnobranchiata (McIntosh, 1885) Fig. 16A

Diagnosis.

Peristomial cirri present. Parapodia 1 enlarged; parapodia 1-3 with bi- to trilobed prechaetal lobes; subulate ventral cirri on chaetiger 1 and 2. Bidentate simple to pseudocompound hooks on first three parapodia; pectinate chaetae scoop-shaped. Simple branchiae from chaetiger 16-19. Round tubes of inner parchment-like lining and outer muddy layer with embedded foreign objects such as spines or spicules.

Remarks.

The species is widely distributed in great depths of southern oceans, perhaps a species complex. It is new to Australian waters, also collected from six stations at the GAB (990-1790 m depth) reported as Anchinothria sp. 1 ( MacIntosh et al. 2018: additional file 2).

Records.

6 specimens. Suppl. material 1: ops. 56, 69, 115, 122 (AM).

Figures

Figure 16. Onuphidae A Anchinothria cf. pycnobranchiata (op. 56) B Nothria cf. paxtonae (op. 56) C Nothria sp. nov. 1 (AM W. 49940) D Nothria sp. nov. 1, tube (AM W. 49940) E Nothria sp. nov. 2 (AM W. 49933) F Nothria sp. nov. 3 (AM W. 49934) G Paradiopatra sp. nov. 2 (AM W. 49950). Scale bars: 5 mm (A); 1 mm (B-E, G); 4 mm (F).