Found this small (6-10 mm) fly (in the Family Tachinidae), on some asters today under sunny skies and unbelievably warm temperatures of +22 celsius. If you don't like stinkbugs, you'll love this fly, because it is a parasite of stinkbugs, helping to control the numbers of these bugs. The flies lay their eggs on stinkbugs, and then go off and nectar on flowers.