While most gardeners despise a pest that takes advantage of a prize plant, I relish it. In fact, I plant natives to provide homes for things like this leaf miner fly in the family Agromyzidae. Thank you to John Carr for helping place this to family. Isn't is fascinating? This tiny fly is resting on the tip of a leaf blade of Mondarda fistulosa, wild bergamont. I've never observed it before, but it is tiny, no more than a few millimeters from head to folded wingtip.