Doridicola indistinctus n. sp. (Copepoda: Poecilostomatoida: Rhynchomolgidae) associated with the soft coral Gersemia fruticosa Sars (Octocorallia: Alcyonacea: Nephtheidae) from the White Sea
A new species of poecilostomatoid copepod, Doridicola indistinctus n. sp. (Rhynchomolgidae), is described from specimens found in association with the soft coral Gersemia fruticosa Sars (Alcyonacea: Nephtheidae), collected from the White Sea. The new species is distinguished from its congeners by the combination of the following features in the female: (i) antenna tipped, with two subequal large claws which are about as long as the segment bearing them; (ii) two naked, extremely unequal setae on the middle segment of the maxilliped, the short, medial seta less than half-length of the outer seta; and (iii) free segment of leg 5 bears the basal swelling and is ornamented with spinules on the outer surface. This is the first report of a copepod occurring in symbiosis with nephtheid corals from the Arctic Zone. It also constitutes the northernmost record for a species of Doridicola Leydig, 1853, which is the largest genus of the Rhynchomolgidae Burmeister, 1835 comprising 52 species, including the present new species.
KeywordsSoft Coral Middle Segment Free Segment Naked Seta Spiniform Seta
We thank Dmitry Zhadan (Lomonosov Moscow State University) for the collection of the coral hosts from the White Sea and Frederick M. Bayer (National Museum of Natural History, Washington, D.C.) for the identification of the coral hosts. Studies on the copepods were made possible through grants (12-04-01716-a) from Russian Foundation for Basic Research, from the Robert Bateman Arctic Fund, and (14.740.11.1049, 8334) from the Ministry of Education and Science of the Russian Federation to VNI. Completion of this manuscript was aided by a grant from the Paramitas Foundation to JSH.
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