Myriowenia, 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

Myriowenia spp. Fig. 2G

Diagnosis.

Head with large grooved palps and bilobed prostomium, mouth anteroventral, with ventral pharyngeal organ. First three segments uniramous, with capillary notochaetae. Subsequent segments biramous with capillary notochaetae and neuropodial uncini with teeth arranged in a vertical position.

Remarks.

At least two species are present based on tubes, one very substantial tube, other fine, difficult to extract entire animal from tube but all are characterised by a pair of large grooved palps. The genus Myriowenia is represented by four species, one from California, two from the Gulf of Mexico, and an undescribed species from Australia ( Capa et al. 2012). Capa et al. (2012), while providing a detailed description, did not formally describe the specimen as a new species because previously described species did not provide detailed information on intraspecific differences in diagnostic characters.

Records.

14 specimens. Suppl. material 1: ops. 43, 44, 56, 65; 78, 99, 135 (AM).

Figures

Figure 2. Acoetidae, Chrysopetalidae, Nephtyidae, Oweniidae A Acoetidae, Panthalis sp., dorsal view (AM W. 50321) B Chrysopetalidae, Dysponetus cf. caecus, dorsal view C Dysponetus cf. caecus, ventral view D Nephtyidae, Aglaophamus sp. pre- and post-acicular chaetae E Nephtyidae, Nephtys cf. paradoxa (AM W. 52750) F Nephtyidae, Aglaophamus sp. G Oweniidae, Myriowenia sp. in tube (AM W. 51842). Scale bars: 2 mm (A); 1 mm (B, C); 50 µm (D); 5 mm (E, G); 3 mm (F).