Microfilariae Onchocerca alcis Bain et Rehbinder, 1986 – a new parasite of moose Alces alces (L.) in Poland

Onchocerca alcis Bain et Rehbinder, 1986 belongs to the subfamily Onchocercinae. Mature nematodes of O. alcis are located on the surface of hindlimb tendons. The aim of this article was to describe the occurrence of microfilariae of O. alcis in the skin of moose from Kampinos Forest. This is the first report of O. alcis in moose from Poland and the third finding of this rare species in the world.