Guide and keys for the identification of Syllidae (Annelida, Phyllodocida) from the British Isles (reported and expected species)

. 2015 Mar 19;(488):1–29. doi: 10.3897/zookeys.488.9061

1	Blades of compound chaetae elongated and unidentate	Odontosyllis gibba Claparède, 1863 (1)
–	Blades short and hooked, uni- or bidentate	2
2	Blades strongly bidentate	Odontosyllis fulgurans (Audouin & Milne Edwards, 1833) (1)
–	Blades unidentate	Odontosyllis ctenostoma Claparède, 1868 (1)