Euphrosinopsis cf. horsti Kudenov, 1993

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

Euphrosinopsis cf. horsti Kudenov, 1993

Diagnosis.

Narrow prostomium, flanked by first three chaetigers, with a broader ventral pad. Pair of large eyes dorsally. Oval body dorsoventrally flattened. Abundant chaetae densely covering the dorsum. Notochaetae in five tiers: first and fifth tiers with small furcate chaetae, second and fourth tiers with large furcate chaetae, and third tier with category IIB ringent chaetae. Neurochaetae furcate. Paired inflated anal cirri with unfused bases present.

Remarks.

Observed specimens differ from described Euphrosinopsis species in having five tiers of notochaetae instead of two in E. antarctica , three in E. crassiseta , and four in E. horsti ( Kudenov 1993). The category IIB ringent chaetae are similar to those of E. antarctica and E. horsti but with a smooth shaft. This is the first record of Euphrosinopsis outside the Southern Ocean.

Records.

3 specimens. Suppl. material 1: ops. 76, 98, 110 (NHMUK).