New species and records of the genus Syllis Savigny in Lamarck, 1818 (Annelida: Syllidae) from Socotra Archipelago (Indian Ocean) Author Rodríguez, Yolanda Lucas Author Martín, Guillermo San Author Fiege, Dieter text Zootaxa 2020 2020-02-19 4742 1 73 88 journal article 10.11646/zootaxa.4742.1.4 bea08b82-f1da-4fca-987f-820360af0e8f 1175-5326 3674479 D2AA5CB8-118B-4E1B-9646-F23CA492118A Syllis alternata Moore, 1908 Syllis alternata Moore, 1908: 323–325 , text-fig. a–f, 324; Moore 1909: 321 ; San Martín & Viéitez 1984: 153 , figs 1, 2; Çinar 1999: 246 , fig. 4.102; San Martín 2003: 354 , figs 192, 193. Typosyllis alternata .— Hartman 1948: 21 ; Imajima 1966: 273 , text-fig. 58; Licher 1999: 253 , fig. 106. Syllis ( Typosyllis ) alternata .— Gardiner 1976: 141 , figs 13b, c; Uebelacker 1984: 30–141 , figs. 30–136. Material examined. Soc/ST 706 Kal Farun rock outcrop, 12º26.049’N 52º08.07’E , 9.5–12.5 m , coll. M. Apel, 03.04.2000 , 1 specimen ( SMF 26697). Habitat. In coralligenous concretions, algae, Mäerl, Posidonia rhizomes, detritic bottoms, vermetid reefs, calcareous algae ( San Martín 2003 ). Distribution. Northeastern Pacific Ocean, from Alaska to California. Chukchi Sea. Japan . Caribbean Sea. Gulf of México . Northeastern Atlantic. Mediterranean Sea. Indian Ocean. Apparently cosmopolitan, mainly in the northern hemisphere, but some of these records are probably the result of misidentifications ( Read & Fauchald 2019 ), and S. alternata may be a complex of species. New record for Socotra . Type locality. Vincinity of Naha Bay , Behm Canal , SO-Alaska .