A new species of dorvilleid polychaete, Ophryotrocha urbis, is described from the Odaiba, Tokyo, Japan, at 3–5 m depth. The species belongs to O. lobifera group morphologically/phylogenetically and is distinguishable from other congeners by the following combined features: i) trifid margin of the dorsal anterior side of peristomium; ii) the presence of K-type maxillae; iii) the presence of palps; iv) presence of eyes. Individuals of the species were found only on dead animals, and thus, the species is possibly a scavenger. Partial mitochondrial cytochrome c oxidase subunit I gene sequences from the paratype of O. urbis is provided for reliable species identification in the future.
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