Sphaerephesia sp. nov. 5

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

Sphaerephesia sp. nov. 5 Fig. 30K, L

Diagnosis.

Body ellipsoid (3 mm, 23 chaetigers), with convex dorsum. Head with seven appendages, conical, smooth, lacking basal papillae or spurs; ~ 3-4 × as long as wide; median antenna shorter, digitiform. Antenniform papillae present; additional digitiform papillae covering the head. Four longitudinal rows of dorsal macrotubercles, one transverse row per segment; lateral rows closer to each other. Macrotubercles sessile, pear-shaped and with terminal papillae. Additional ellipsoid dorsal papillae, ~ 20 per between dorsal most macrotubercles, arranged in four or five irregular transverse rows. Ventral papillae, ~ 40 in mid-body segments, arranged in four or five irregular transverse rows. Parapodia with conical ventral cirri, not surpassing the tip of acicular lobe; and> 20 spherical parapodial papillae. All chaetae (> ten) compound, with blades> 15 × longer than wide in mid-body segments.

Re marks.

Identification as 'sp. nov.' is tentative, further analysis is needed to confirm.

Records.

2 specimens. Suppl. material 1: op. 42 (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).