EN
A new case of Dermacentor pictus Herm. infection in Ełk from Grajewo region is described. This points to common incidence of the tick in Grajewo. Augustów, Mańki regions. Extensive studies on the biology and ecology of D. pictus and its role in the transmission of infectious diseases are mandatory. Several cases of piroplasmosis observed in these regions, as well as dead foxes being often found in the spring time when ticks make their appearance, are suggestive in this direction.