I was at a popular fishing spot near Seawolf Park in Galveston TX and thousands of three lined potato beetles, striped cucumber beetles, spotted cucumber beetles, leaf beetles, and many more. Most of them were half dead. I brought a sample back home. They devastate crops such as cucumbers and melons as larvae.
Wow! You got a terrific picture! But, they would not be good for our gardens. They sure look pretty though.