Katydids are also known as Long-horned Grasshoppers. This one must have been content with his Day Lily perch as he was still there when I moved on after taking several images.

I had no idea that I wasn’t capturing the entire length of the antennae on the closeups. It’s not real clear, but if you zoom in you can see the curled end of the antennae below the tip of the flower petal.