Diopatra hektoeni Paxton & Arias 2017, sp. nov

• Main Authors: Paxton, Hannelore, Arias, Andres
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Eunicida; Onuphidae; Diopatra; Diopatra hektoeni; Núñez; San Martín; North Atlantic
• Online Access: https://zenodo.org/record/5492077; https://doi.org/10.5281/zenodo.5492077

Diopatra hektoeni sp. nov Figures 2 F–G, 4–6; Table 1 ? Epidiopatra hupferiana hupferiana.— Kirkegaard 1988: 31 (Cape Verde Islands); López & San Martín 1992: 166 (Cape Verde Islands).?Not Augener, 1918. ? Epidiopatra hupferiana.— Rullier 1964: 184 (Cape Verde Islands); Núñez et al. 1999: 139 (Cape Verde Islands).?Not Augener, 1918. Material examined. Type material. Holotype: (MNCN 16.01 /17811). Ponta Preta, Sal Island, Cape Verde Islands, West Africa, 16°36’N – 22°55’W, depth 1–2 m, coll. A. Arias, 0 5 Jul 2013; paratypes (6 specimens): 3 wet specimens (MNCN 16.01 /17812; MNCN 16.01 /17813; AM W.49211); 3 on SEM stubs (MNCN 16.01 /17814; MNCN 16.01 /17815; AM W.49212), same data as holotype. Type locality. Eastern North Atlantic, Cape Verde Islands, Sal Island, Ponta Preta, 16°36’N – 22°55’W, depth 1–2 m. Diagnosis. Prostomium anteriorly rounded with two subulate frontal lips. Palps to chaetiger 1, antennae to 3– 5; palpophores with three to four rings, antennophores with four to five rings, both with long lateral projections. Nuchal grooves crescentic; peristomial cirri absent. Anterior four to five pairs of parapodia with bidentate pseudocompound hooks with very long pointed hoods; single postchaetal lobes. Ventral parapodial lobes absent, ventral cirri on four to five chaetigers. Bidentate subacicular hooks from chaetiger 10–11, becoming tridentate in median region, thereafter again bidentate; pectinate chaetae with 15–20 teeth; spiralled branchiae, first on chaetiger 4–5, last on chaetiger 30. Description. Holotype almost complete, 16 mm long for 67 chaetigers, 0.8 mm wide; paratypes 13–18 mm for 62–75 chaetigers, 0.8–0.9 mm wide. Ethanol stored specimens overall whitish, with pale brown bands on peristomium and anterior dorsum (Fig. 2 F). Prostomium (Fig. 4 A) anteriorly rounded with two subulate frontal lips separated by a small gap. Ventral upper lips oval with papilla-like median section between lips; lower lip without median section (Fig. 4 B). Palps reaching to chaetiger 1, lateral antennae to ...