Jacek Koszałka and Aleksander Bielecki
University of Warmia and Mazury in Olsztyn, Oczapowskiego 2, 10-957 Olsztyn,
Poland
Key words: Hirudinea, Piscicolidae, Piscicola borowieci.
Abstract.
A new record of the rare species Piscicola borowieci was found during
a study of the bottom fauna in Lękuk Wielki Lake in the Borecka Primeval Forests.