Diopatra madeirensis Langerhans 1880

• 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 madeirensis; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.5492079; http://treatment.plazi.org/id/03DD0635D636FFEAFF0FF9C5FCEDFF53

Diopatra madeirensis Langerhans, 1880 (redescription) Figures 7 A–D, 8, 9; Table 1 Diopatra madeirensis Langerhans, 1880: 290, pl. 15, fig 25a, b. Material examined. Type material. Syntype: (NHMW 2296 slide preparation), Madeira, depth about 36 m, coll. P. Langerhans. Non-type material. AM W.49213 (1 specimen), Ponta da Calheta beach, Porto Santo Island, Madeira Islands, 33°01’33”N – 16°22’18”W, intertidal, coll. A. Arias, Jul 2010; AM W.49214 (1 wet specimen plus parts thereof on SEM stub), La Laja beach, Gran Canaria, Canary Islands, 28°03’N – 15°25’W, intertidal, coll. A. Arias, 12 Jul 2012; MNCN 16.01 /17816–16.01/17817 (1 wet specimen plus 1 specimen on SEM stub) La Laja beach, Gran Canaria, Canary Islands, 28°03’N – 15°25’W, intertidal, coll. A. Arias, 12 Jul 2012. Type locality. Eastern North Atlantic, Madeira, depth about 36 m. Diagnosis. Prostomium anteriorly rounded with two subulate frontal lips; antennae to chaetiger 7–10 with nine to ten ceratophoral rings, lateral projections absent; nuchal grooves crescentic to semicircular; peristomial cirri present. Anterior four to five pairs of parapodia with bidentate pseudocompound hooks with pointed hoods; single postchaetal lobes. Ventral parapodial lobes absent; ventral cirri on four to five chaetigers. Subacicular hooks from chaetiger 15–17; pectinate chaetae with 25–30 teeth; spiralled branchiae, first on chaetiger 4–5, last single filament on chaetiger 38. Description. Specimen from Porto Santo (AM W.49213) almost complete, measuring 38 mm in length for 82 chaetigers, 1.7 mm in width; specimens from Gran Canaria (AM W.49214 / MNCN 16.01/17816) 11 and 9 mm for 17 and 25 chaetigers, width 2.5 and 0.7 mm. Ethanol stored specimens overall cream-coloured to very pale brown with more brown pigmentation at anterior part of prostomium, ceratophores, proximal and part of ceratostyles (figs 7A–C); some specimens with lateral segmental spots near bases of parapodia, when best developed, appearing as vertical stripe next to parapodia (Fig. 7 A). Prostomium ...