Diopatra mellea Paxton & Arias 2017, sp. nov.

• Main Authors: Paxton, Hannelore, Arias, Andres
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Eunicida; Onuphidae; Diopatra; Diopatra mellea; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.5492085; http://treatment.plazi.org/id/03DD0635D62CFFEDFF0FF9A0FB1DFC22

Diopatra mellea sp. nov. Figures 13–15; Table 1, 2 Material examined. Type material. Holotype: MNCN 16.01 /17821, La Laja beach, Gran Canaria, Canary Islands, 28°03’N – 15°25’W, intertidal, coll. A. Arias, 12 Aug 2012; paratype: AM W.49216 same data as holotype. Type locality. Eastern North Atlantic, Canary Islands, Gran Canaria, Las Palmas, La Laja beach, 28°03’N – 15°25’W, intertidal. Diagnosis. Prostomium anteriorly rounded with two subulate frontal lips; antennae to chaetiger 6–11 with 12– 13 ceratophoral rings, lateral projections absent; nuchal grooves crescentic to semicircular; peristomial cirri present. Anterior five to six pairs of parapodia with bidentate pseudocompound hooks with falcate hoods; double postchaetal lobes. Ventral parapodial lobes absent, ventral cirri on five chaetigers. Subacicular hooks from chaetiger 19–20; pectinate chaetae with 4–11 teeth; spiralled branchiae, first on chaetiger 5, last single filament on chaetiger 70. Description. Both types incomplete, holotype 31 mm long for 95 chaetigers, 2.0 mm wide; paratype 28 mm for 70 chaetigers, 3.5 mm wide. Ethanol stored specimens overall very pale brown with some mottled darker brown pigmentation at anterior part of prostomium, ceratostyles, peristomial cirri, first pairs of parapodia, their lobes and cirri; also brown ceratophoral rings and a brown band on anterior edge of first ten segments (Fig. 13 A–C). Prostomium anteriorly rounded with two closely spaced subulate frontal lips. Ventral upper lips oval with papilla-like median section between lips; lower lip with median section (Fig. 13 B). Palps reaching to chaetiger 4, lateral antennae to chaetiger 7–8 (11), median antenna to chaetiger 6 (10); ceratophores with 12 (11–12) proximal rings and a longer distal ring, ceratostyles tapering to distal end, with fine tips. Styles with about 20–22 irregular longitudinal rows of sensory buds (Fig. 14 A); buds slightly raised, forming semi- to almost full circles (Fig. 14 B, C). Nuchal grooves crescentic to semicircular. Peristomial cirri ...