Eusyllinae (Syllidae, Polychaeta) from Cuba and Gulf of Mexico

Twenty-one species of the genera Pionosyllis Malmgren, 1867, Eusyllis Malmgren, 1867, Syllides Orsted, 1845, Amblyosyllis Grube, 1857, Odontosyllis Claparède, 1863 and Opisthodonta Langerhans, 1879 (Eusyllinae: Syllidae) principally from Cuba and also from the Gulf of Mexico are reported in this paper. The following new species are described: Pionosyllis spinisetosa, P. riojai, P. luquei, P. aciculata, P. aciculigrossa, Syllides gomezi, and Odontosyllis luminosa. The species Pionosyllis divaricata (Keferstein, 1862), P. lamelligera Saint-Joseph, 1856, Eusyllis kupfferi Langerhans, 1879, Amblyosyllis madeirensis Langerhans, 1879, A. dorsigera Claparède, 1864, A. algefnae Viguier, 1886 and Odontosyllis detecta Augener, 1913 are new to the Caribbean and Gulf of Mexico area. The species Pionosyllis weissmanni Langerhans, 1879, P. gesae Perkins, 1981, Eusyllis lamelligera Marion and Bobretzky, 1875, Syllides floridanus Perkins, 1981 and Odontosyllis fulgurans (Audouin and M. Edwards, 1834) are furthermore new to the Cuban fauna. The species Syllides sp. and Opisthodonta sp. have been identified to generic level only.