During a benthic survey of a Marine Conservation Zone located on the Skerries Bank in the English Channel off the south-west coast of England, three specimens of
Streptosyllis nunezi Faulwetter et al., 2008 were found. This is the second ever record of the species after its original description, and the first record from waters around the U.K. and a significant northerly range extension for a species previously only recorded from the Canary Islands and the Mediterranean Sea. A single simple ventral chaeta in each of the two posterior-most segments was discovered in this and two other species of
Streptosyllis Webster & Benedict, 1884. The generic definition of
Streptosyllis is emended to include this feature previously unknown for the genus, and an updated key to the
Streptosyllis found in UK waters is provided.
