Just when this species first became abundant in Ohio we are unable to say, but it was not until June, 1898, that we began a study of its habits. The insect is quite generally distributed in Ohio, as we have observed it at Alliance, Wooster, Tiffin, Fremont, and Clyde, and perhaps over the eastern and western parts of the United States, as it is found at Washington, D. C., where Dr. Chittenden is making a careful study of it, and Mr. Mally observed it in abundance in the summer of 1899, at Des Moines, Iowa.