Clavate Tortoise Beetle

I noticed what I originally thought was a fly buzzing around me while I was trying to take pictures of something else. I saw where it eventually sat, but I couldn't get a good look at it. I took pictures of the general area. Near the bottom-right corner of the rock is what I discovered to be a small tortoise beetle. I'm not sure about the species - if anyone can see it clearly enough to identify it further, that would be great.