Ephemerella invaria, the sulphur dun, is a species of spiny crawler mayfly in the family Ephemerellidae.[1][2][3][4] It is found in southeastern and northern Canada and the eastern United States.[1][5]
Ephemerella invaria, the sulphur dun, is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in southeastern and northern Canada and the eastern United States.
