Cutting the ribbon: bathyal Nemertea from seeps along the Costa Rica margin, with descriptions of 2 new genera and 9 new species

The taxonomy of ribbon worms (Nemertea) is particularly challenging due to the sparsity distinct morphological characters, causing a significant underestimation group’s true diversity. number named deep-sea species very limited and there vast undescribed nemerteans still be discovered. In this paper we figuratively ‘cut ribbon’ name seven new monostiliferous hoplonemerteans from seeps seamounts along Costa Rican margin, one Oregon vents Juan de Fuca Ridge, USA. Chernyshevia escarpiaphila gen. et sp. nov. five genus Alvinonemertes (Alvinonemertes dariae nov., dagmarae christianeae claudiae tatjanae nov.) represent Oerstediina, whereas three Tetrastemma sundbergi polyakovae strandae Amphiporina. One tubulanid palaeonemerteans described but not provided with lacking sequence data for comparison. Additionally, provide lineid heteronemertean, reptant hoplonemertean, two further eumonostiliferan hoplonemertean species. We use an integrative, turbotaxonomic approach combining DNA concise descriptions fully digitized serial histological sections made available as cybertypes.