This colorful beetle (Megacyllene robiniae) is very destructive to locust trees in its larval stage; but since Pittsburgh has an infinite supply of locust trees, we need not worry about it. Probably these creatures are the only things that keep the locust trees from taking over and imposing martial law. The adult beetle looks very dashing in its striped livery. It eats goldenrod pollen, which means that our Locust Borers are very happy right now.
A dragonfly rests on a wooden step. A moment after this picture, it took off hunting again.
Two caterpillars share a blade of grass. Father Pitt does not know what kind of moth or butterfly they will grow into, but as caterpillars they have a particularly tasteful black-and-white design.
A dragonfly rests briefly before heading out on another hunting expedition.
An entire ecosystem depends on the bark of this one tree in Mount Lebanon: moss, lichens, a bug, and tiny mushrooms. How tiny are they? Below is a left index finger for scale.