Pennsylvania Leatherwing (Chauliognathus pensylvanicus). A member of the Soldier Beetle family, Cantharidae. Native to North America. These Leatherwings are on Wild Ageratum (Eupatorium coelestinum), though I’ve read their favorite color is yellow, such as Goldenrod. I guess they are not that particular. They are considered a great pollinator. And they love to eat aphids, as…