Notoproctus sp. nov. 2

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

Notoproctus sp. nov. 2 Fig. 14J

Diagnosis.

Several anterior and posterior fragments present. Largest anterior fragment with ten chaetigers, 15 mm long and 0.4 mm wide. Cephalic plate more or less circular. Nuchal slits slightly curved, transversely oriented. No cephalic keel visible between nuchal slits. Ocelli absent. Anterior four chaetigers with one or two straight acicular spine(s) per neuropodium. Neuropodia of remaining chaetigers with a single row of rostrate hooks. Two preanal achaetigerous segments. Anal plate more or less circular with distinct lateral incisions. Anal opening dorsally to plate.

Remarks.

Presence of an anal plate with distinct lateral incisions, similar to what is seen in species of Maldane , is unique within the genus Notoproctus .

Records.

14 specimens, Suppl. material 1: op. 56 (AM).

Figures

Figure 14. Maldanidae A Boguea sp. nov. B Chirimia sp. nov. C Lumbriclymene sp. D Maldane sp. E Maldanella sp. 1 F Maldanella sp. 2 G Notoproctus sp. nov. 1 H Notoproctus cf. scutiferus I Notoproctus oculatus antarcticus J Notoproctus sp. nov. 2. Scale bars: 5 mm (A, D, F); 1 mm (B, C, G-J).