Leanira, Gunton & Kupriyanova & Alvestad & Avery & Blake & Biriukova & Böggemann & Borisova & Budaeva & Burghardt & Capa & Georgieva & Glasby & Hsueh & Hutchings & Jimi & Kongsrud & Langeneck & Meißner & Murray & Nikolic & Paxton & Ramos & Schulze & Sobczyk & Watson & Wiklund & Wilson & Zhadan & Zhang, 2021

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

Leanira sp. nov. Fig. 29A, B

Diagnosis.

Mostly incomplete specimens, at least 28 mm long, 3 mm wide, for 70 segments (or 26 mm long, 4.5 mm wide for 40 segments). Prostomium sometimes with dark pigmentation or a few spots. Elytra smooth on surface, small and round anteriorly, becoming larger and more ovate (kidney-shaped) posteriorly, almost covering dorsum, lacking lateral indentations. Median antenna short, subulate, without auricles, lateral antennae located on inner dorsal side of tentacular segment. Eyes absent. Palps long, palpal sheaths present. Labial lobes present on lateral lips, bulbous. Dorsal cirri absent from segment 3. Neurochaetae all compound spinigers with entire tips, canaliculate. Clavate stylodes present on parapodia. Branchiae starting at ~ chaetiger 30.

Remarks.

This species has also been collected from depths of <920 m along the east Australia coast during cruises by the FRV ‘Kapala’ (1980) and RV ‘Franklin’ (1988) ( Hutchings et al. in prep.). It bears some resemblance to L. quatrefagesi Kinberg, 1856 (only recorded from intertidal areas in the South Pacific and Southern Oceans) and L. hystricis Ehlers, 1874 (recorded from 900-2600 m in North Atlantic waters) because of the presence of labial lobes, the lack of neurochaetae, the lack of lateral indentations of the elytra and the absence of segmental papillae ( Hutchings et al. in prep.).

Records.

17 specimens. Suppl. material 1: ops. 22, 23, 40, 45, 54, 56.

Figures

Figure 29. Sigalionidae A Leanira sp. nov. (AM W. 52617) B Leanira sp. nov. (AM W. 52620) C Neoleanira sp. nov. (AM W. 49501) D Neoleanira sp. nov. (AM W. 52612) E Pholoe sp. (AM W. 52160) F Pholoides sp. (AM W. 52616). Scale bars: 1 mm (A, B, E); 1 cm (C, D); 0.1 mm (F).