Diopatra mariae 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 mariae; North Atlantic
• Online Access: https://zenodo.org/record/5492081; https://doi.org/10.5281/zenodo.5492081

Diopatra mariae sp. nov. Figures 7 E–G, 10, 11; Table 1, 2 Material examined. Type material. Holotype: (MNCN 16.01 /17818), Papagayo beach, Lanzarote, Canary Islands, 28°50’32” N – 13°47’18” W, intertidal, coll. A. Arias, 10 Aug 2011; paratype (MNCN 16.01 /17819), same data as holotype. Type locality: Eastern North Atlantic, Canary Islands, Lanzarote, Papagayo beach, 28°50’32” N – 13°47’18” W, intertidal. Diagnosis. Prostomium anteriorly rounded with two subulate frontal lips; antennae to chaetiger 13–15 with seven to nine ceratophoral rings, lateral projections absent; nuchal grooves crescentic; peristomial cirri present. Anterior four pairs of parapodia with bidentate pseudocompound hooks with pointed hoods; with upper subulate and lower knob-like postchaetal lobes. Ventral parapodial lobes absent, ventral cirri on five chaetigers. Subacicular hooks from chaetiger 17; pectinate chaetae with 18–22 teeth; spiralled branchiae, first on chaetiger 4, single filaments from chaetiger 50. Description. Both types incomplete, holotype 28 mm long for 86 chaetigers, 2.5 mm wide; paratype 6 mm for 30 chaetigers, 0.9 mm wide. Ethanol stored specimen overall very pale brown with some darker pigmentation on prostomium and anterior chaetigers, no distinct colour pattern (Figs 7 E, F). Prostomium anteriorly rounded with two subulate frontal lips separated by a small gap (Fig. 7 E). Ventral upper lips oval with papilla-like median section between lips; lower lip with median section. Palps reaching to chaetiger 3, lateral antennae to chaetiger 15, median antenna to chaetiger 13; ceratophores with six to eight proximal and a longer distal ring, styles tapering to distal end, with fine tips. Ceratostyles with about 20 irregular longitudinal rows of flat sensory buds; buds forming semicircles (Fig. 10 A) to almost full circles. Nuchal grooves very shallow crescents, hardly visible below contracted peristomium; peristomial cirri slender, twice as long as peristomium, reaching distal tip of palpophores, inserted distally on ...