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	Small size (up to 10 mm long). Teeth of blades of compound chaetae close to each other	Pionosyllis compacta Malmgren, 1867 (13)
–	Large size (up to 31 mm long. Teeth of blades well separated	Pionosyllis enigmatica (Wesenberg-Lund, 1950) (1, 13)