EN
In October 2006 an individual of the Common Eider (Somateria mollissima) was examined and one female of Trinoton querquedulae was found on one of the remiges. This species of lice was recorded for the first time in Poland on the studied host. Up till now, T. querquedulae has been noted only on this duck species in Belgium. Considering the extremely scarce information available, this species of lice is most probably rare in the Common Eider.