Bruunilla 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

Bruunilla sp.

Diagnosis.

Specimens small-bodied with 17 segments. All elytra missing, eight pairs of elytrophores present. Prostomium bilobed with small median antennal ceratophore (style missing), frontal filaments present, lateral antennae, eyes and facial tubercle absent. Palps smooth, short. Pair of large lamellate wing-like structures with blunt tips present ventrally, emergent from the lower lip. Tentaculophores achaetous, tentacular styles long. Notopodia reduced, much shorter than neuropodia, both neuropodia and notopodia with elongate acicular lobes. Notochaetae present, slenderer than neurochaetae, both distally flattened to concave with serrations along both sides. Ventral cirri from segment 3 inserted medially on neuropodia; ventral cirri on segment 2 longer than those on following segments.

Remarks.

These specimens possess a pair of large wing-like structures on the ventral surface of the lower lip ( Bonifácio and Menot 2018: fig. 11B, G), a character so far unique to the genus Bruunilla , and specimens most resemble Bruunilla nealae Bonifácio & Menot, 2018 because of the blunt tips of these structures. However, because the posterior ends are all somewhat damaged, the presence of cirriform papillae on neuropodia 12-17, a character differentiating this species from B. natalensis Hartman, 1971, could not be confirmed. This former species is only known from a single specimen in the equatorial eastern Pacific Ocean, from 2979 m depth.

Records.

4 specimens. Suppl. material 1: ops. 79, 134, 110 (AM).