The Garden Bug: The red-spotted purple
By Brenda Weaver
This butterfly lives from Florida over to eastern Texas, and northward into Minnesota, Wisconsin, Michigan, New York, Vermont, and New Hampshire. Adults prefer to feed on tree sap, fermenting fruit or dung, but they also take nectar from flowers and frequently feed at mud puddles.
Plant hosts for red-spotted purple larvae are black cherry, deerberry, willows, aspens, poplars, cottonwood, hawthorn, birches and black oak.
Source: entnemdept.ufl.edu