Being a bit of a student of these sorts of things, I figured the little singer must be the red-headed meadow katydid, Orchelimum erythrocephalum.
The Songs of Insects. In this dorsal, or top view, the animal may not look like much, but just you wait.
I was instantly smitten with these red-headed meadow katydids, and hunted up and photographed several of them. The six-legged extroverts are not hard to find, once one is tuned in to their melody. LISTEN HERE. The singing males, such as above, typically mount the highest leafy perch available, and belt their song out to the masses. You could easily hear a singer from 75 feet away.
I would like to know more of the variation in the red-headed meadow katydid. The Okefenokee insects appear more colorful and boldly marked than most of the images that I've seen, and the eyes seem more strongly blue. But the song is spot on with all of the recordings that I've heard.
As I write this entry, the temperature outside is in the low 30's, and there are intermittent snow flurries. I wish I were back in Georgia's piney flatwoods, where the red-headed meadow katydid song resonates!