Poweshiek Skipper (Oarisma poweshiek), is listed as State and Federally Endangered in Wisconsin. Poweshieks require wet-mesic prairie or southern fen habitat with native grasses, sedges, and a significant component of plants in the sunflower family. These wet communities often support Joe pye weed (Eupatorium maculatum), swamp milkweed (Asclepias incarnata), gayfeather (Liatris pychnostachya), big bluestem (Andropogon gerardii), and possibly cordgrass (Spartina pectinata). This is a univoltine species, adults are present mid-June through July, peaking the first two weeks of July. Eggs are laid near the tips of leaf blades. Eggs and larvae are on the host plants from late-June through the winter until pupation in late-May.
