European Journal of Taxonomy (Nov 2020)

Onisimus turgidus (Sars, 1879) (Amphipoda, Uristidae), an overlooked amphipod from sea anemones in Northern Norway

  • Wim Vader,
  • Jan Roger Johnsen,
  • Anne Helene S. Tandberg

DOI
https://doi.org/10.5852/ejt.2020.724.1155
Journal volume & issue
Vol. 724, no. 1

Abstract

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Two Norwegian uristid amphipods, obligate associates of sea anemones, have for a long time been confused sub nomine Onisimus normani Sars, 1890. In reality this species only occurs in south Norway, while the north-Norwegian material belongs to O. turgidus (Sars, 1879), described from the Barents Sea and for a long time forgotten. This paper fully illustrates both species, gives a key, and provides data on their distribution and ecology.

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