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

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...

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Bibliographic Details
Published in:European Journal of Taxonomy
Main Authors: Wim Vader, Jan Roger Johnsen, Anne Helene S. Tandberg
Format: Article in Journal/Newspaper
Language:English
Published: Consortium of European Natural History Museums 2020
Subjects:
sibling species
Crustacea
species complex
Zoology
QL1-991
Botany
QK1-989
Barents Sea
Norway
Northern Norway
Online Access:https://doi.org/10.5852/ejt.2020.724.1155
https://doaj.org/article/2d58a9bd859d4f938de0169e1f3b8925
Description
Summary: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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