It's on Little Bluestem stems, so it's a pretty small moth. If I recall right, it was maybe less than 1/2 inch long. It sort of looks like Epelis truncataria on John Himmelman's Connecticut Moths website, but he mentions them inhabiting cranberry bogs. There aren't too many of those around here. However, it's the closest thing I've found so far. Perhaps they eat something else here.
March 14, 2005, near Greenwood, Wise County, Texas