Levinsenia uncinata (Hartman, 1965)

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

Levinsenia uncinata (Hartman, 1965) Fig. 19E

Diagnosis.

Body thread-like, posteriorly incomplete, ~ 12 mm for 35 chaetigers, 0.33 mm maximum width. Prostomium triangular, with apical organ, without eyes, without prostomial antenna, nuchal organs as thin slits on the posterior part of the prostomium. Branchiae absent. Notopodial post-chaetal lobes inconspicuous in the anterior part of the body, posterior part of the body too damaged to determine. Modified neuropodial chaetae after chaetiger 18, first two, then up to four or five, strong, thick and slightly curved hooks with well-developed sub-distal dorsal sheath. Methyl green staining pattern: a ventral median rectangular dot on chaetigers 1-5; ventrally complete bands (dorsally open) from chaetiger 6 to chaetiger 17; nuchal slits pigmented.

Remarks.

The examined specimen corresponds well to the original description by Hartman (1965) and the redescription by Strelzov (1973). This species seems to be widespread in bathyal to abyssal environments of the Atlantic and Pacific Ocean and may be a species complex.

Records.

1 specimen. Suppl. material 1: op. 56 (AM).

Figures

Figure 19. Paraonidae A Aricidea sp., prostomium with median antennae B same, capillary with arista C Aricidea cf. simplex, dorsal view anterior (AM W. 52307) D same, ventral view anterior (AM W. 52307) E Levinsenia uncinata (AM W. 52320), methyl green stained dorsal view F Paraonella sp. 1 (AM W. 52310) G Paraonis cf. quadrilobata chaetae (AM W. 52307). Scale bars: 250 µm (A); 50 µm (B); 1 mm (C, D, E, F); 10 µm (G).