Alalykina I.L. 2011. [Tenonia elegans sp.n., a new polynoid species (Polychaeta) from the shelf of north east Sakhalin Island, Sea of Okhotsk] // Invertebrate Zoology. Vol.8. No.2: 121–125 [in Russian, with English summary].

A.V. Zhirmunsky Institute of Marine Biology, Far East Branch, Russian Academy of Sciences, Far Eastern Federal University, Vladivostok 690041 Russia; е-mail:

doi: 10.15298/invertzool.08.2.04

KEY WORDS: Polychaeta, Polynoidae, Tenonia elegans sp.n., morphology, taxonomy, Sakhalin, Sea of Okhotsk.

ABSTRACT: A new polynoid species Tenonia elegans sp.n. is described from the shelf of north east Sakhalin Island. Till now the genus Tenonia remained monotypical. It is recorded for the first time for Sea of Okhotsk. The detailed description of the new species is given and its differences from a closely related species are shown: anterior pair of eyes situated in front of widest point of prostomium; the presence of papillae on antennae, palps and cirri; tentaculophores with 3–4 stout, curved setae on anterior face. This new species differs also from T. priops in possessing smaller sizes of eyes and less numerous setae in parapodia.

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