A New Isospora (Apicomplexa: Eimeriidae) from the Dark-Eyed Junco, Junco hyemalis (L.) (Passeriformes: Passerellidae), in West-Central Arkansas, USA.

This is the first coccidian reported from J. hyemalis and, more importantly, the first isosporan known from any member of the family Passerellidae in North America.