Odontosyllis cf. fulgurans (Audouin & Milne Edwards, 1833) Syllis fulgurans Audouin & Milne Edwards, 1833: 229. Odontosyllis fulgurans. Fauvel 1923: 274, fig. 103F–I; Gardiner 1975: 135, fig. 12A–C; San Martín 1984: 93 –97, lam. 14; 1990: 618; 2003: 104, figs 46–47; Nogueira 2000: 89 –90, fig. 20 L–O. Odontosyllis cf. fulgurans. Fukuda & Nogueira 2006: 229 –232, figs 3–4; Fukuda et al. 2013: 144, fig. 1B. Material examined. Project 'BioPol-NE'. State of Paraíba, Baía da Traição, Praia do Farol (6°41.331'S 34°55.803'W), intertidal: 9 specimens (MZUSP 1223), coll. 0 9 August 2010. Rio Tinto, Barra de Mamanguape (6°46.140'S 34°55.025'W), intertidal: 6 specimens (MZUSP 1224), coll. 11 August 2010. João Pessoa, Praia de Cabo Branco (7°8.815'S 34°47.773'W), intertidal: 7 specimens (MZUSP 1225), coll. 0 2 February 2010; 1 specimen (MZUSP 2789), coll. 0 8 February 2009; Recife do Picãozinho (7°4.243'S 34°49.291'W), intertidal: 8 specimens (MZUSP 2791), coll. 15 September 2009. Pitimbu, Farol de Pitimbu (7°28.362'S 34°47.663'W), 1 m: 1 specimen (MZUSP 2790), coll. 18 September 2012. State of Pernambuco, Ilha de Itamaracá, Ponta do Jaguaribe (7°4.243'S 34°49.291'W), intertidal: 2 specimens (MZUSP 2792), coll. 11 December 2012; recifes de Itamaracá (7°4.243'S 34°49.291'W), 1 m: 3 specimens (MZUSP 2793), coll. 15 December 2012. Diagnosis. Odontosyllis without pigmentation pattern, with short, bidentate blades, teeth of similar size, with rounded space in between, 5–6 teeth on trepan, moderately large occipital flap. Remarks. We noticed a variation in size among specimens of O. cf. fugurans along the Brazilian coast. In southeastern Brazil, the largest specimen analysed was 5 mm long, with 50 chaetigers (Fukuda & Nogueira 2006), whereas in northeastern Brazil we found specimens up to 15 mm long, incomplete, with 88 chaetigers. San Martín (2003) examined specimens 40 mm long, with ca. 100 chaetigers, from Spain. Nevertheless, our specimens match the description of O. cf. fulgurans by Fukuda & Nogueira (2006) and Fukuda et al. (2013), except for the inverted dorso-ventral gradation in length of the blades of falcigers, which was misinterpreted by Fukuda & Nogueira (2006). Type locality. France (Mediterranean Sea). Distribution. Probably a cosmopolitan species, occurring in tropical and temperate waters (San Martín 2003). However, a detailed comparison among specimens from different areas could possibly indicate a complex of species.

Published as part of Paresque, Karla, Fukuda, Marcelo Veronesi, Martín, Guillermo San & Nogueira, João Miguel De Matos, 2015, Amblyosyllis, Eusyllis, Odontosyllis, Perkinsyllis and Streptodonta (Annelida: Syllidae) from Brazil, with descriptions of two new species and new records for the country, pp. 301-334 in Zootaxa 4000 (3) on page 314, DOI: 10.11646/zootaxa.4000.3.1, http://zenodo.org/record/254376