Linopherus sp. 1

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

Linopherus sp. 1 Fig. 5A, B

Diagnosis.

Prostomium divided into two. Posterior portion pentagonal with medial antennae on posterior edge, flanked laterally by the first chaetiger. Anterior section round with antennae and palps reduced to small bumps anterolaterally and laterally respectively. Body small, slightly wider anteriorly and tapering posteriorly. Eyes absent. First chaetiger reduced, not continuous dorsally. Papilliform notopodial postchaetal lobe present throughout. Bipinnate branchiae present on chaetigers 3-5.

Remarks.

Linopherus sp. 1 differs from a second species of Linopherus known from the GAB ( MacIntosh et al. 2018: additional file 2) in having branchiae first present on chaetiger 3 rather than chaetiger 4 in GAB specimens.

Records.

1 specimen. Suppl. material 1: op. 100 (NHMUK).

Figures

Figure 5. Amphinomidae A Linopherus sp. 1, bipinnate branchiae B Linopherus sp. 1, antennae and palps C Paramphinome cf. australis D Paramphinome cf. australis, hooks E Pareurythoe sp. (AM W. 52611) F Amphinomidae gen. sp. juveniles (AM W. 52607). Scale bars: 250 µm (A); 100 µm (B); 1 mm (C, F); 50 µm (D); 3 mm (E).