Ephemerella excrucians, the pale morning dun, is a species of spiny crawler mayfly in the family Ephemerellidae.[1][2] It is found in all of Canada and the continental United States.[2][3]
Ephemerella excrucians, the pale morning dun, is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in all of Canada and the continental United States.