Shallow-water reef ophiuroids (Echinodermata: Ophiuroidea) of Réunion (Mascarene Islands), with biogeographic considerations Author Boissin, Emilie Author Hoareau, Thierry B. Author Paulay, Gustav Author Bruggemann, J. Henrich text Zootaxa 2016 4098 2 273 297 journal article 10.11646/zootaxa.4098.2.4 13fb3418-fb61-410f-9ce2-93099f5344d7 1175-5326 255654 D446E3D3-5B5B-431A-80E6-1318638DFA27 Ophiocoma scolopendrina (LAMARCK, 1816) (REU-3652, Fig. 4 d, KC759913 ) Material. 1 spm, St. 5; 7 spms, St. 8 Remarks. This species is strictly intertidal ( Fontaine 1965 ) and has longer arms than other members of the ‘ SCOLOPENDRINA GROUP’. An abundant species on reef flats at Etang Salé, where they are found hidden under rocks. Only the arms are visible as they sweep the air-water interface using an unusual feeding mode: surface-film feeding at low tide ( Oak & Scheibling 2006 ). This species is distinguishable from others of the ‘ SCOLOPENDRINA GROUP’ by its colouration: brown and variegated with a yellowish ventral side, whereas other species display a black/dark ventral side. COI sequence data shows little genetic differentiation across the range of this species (Hoareau et al. 2013). Abundance: 2. Distribution. Common across the IWP ( Clark & Rowe 1971 ); recently reported from Réunion ( Stöhr et al. 2008 ) and already known from Mauritius (de Loriol 1893a ).