Sphaerodorum sp.

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

Sphaerodorum sp. Fig. 30M, N

Diagnosis.

Body long and slender, subquadrangular in cross section. Head with seven appendages, smooth, lacking basal papillae or spurs; ~ 3 × as long as wide; median antenna and tentacular cirri shorter. Antenniform papillae absent. Two longitudinal rows of dorsal macrotubercles, one pair per segment; sessile, with terminal papillae. Two longitudinal rows of microtubercles, one pair per segment, running parallel between macrotubercles. Additional dorsal papillae faint in studied material. Ventral papillae not observed. Parapodia with less than six spherical papillae. All chaetae semi-compound with blades ~ 5 × as long as wide, in mid-body chaetigers; hooks in first chaetiger not observed.

Records.

2 specimens. Suppl. material 1: op 9, 16 (AM).

Figures

Figure 30. Sphaerodoridae A-C Clavodorum cf. longipes D-G Sphaerephesia sp. nov. 1 (D, stained with methyl blue) H-J Sphaerephesia sp. nov. 3 K, L Sphaerephesia sp. nov. 5 M, N Sphaerodorum sp. Scale bars: 100 µm (A, B, D, E, I-M); 1 mm (G, H); 10 µm (C, N).