Perhaps, I should have called this post, "Pop Went The Pupal Skin" since what popped the "head" off of this pupal skin wasn't the original occupant. We found this small moth pupa under a piece of bark on a dead hickory tree that had I cut down (this kind of thing happens when a naturalist cuts firewood ). We put the pupa in a cup and basically forgot about it. Last night I heard some small popping noises among the collection of nature items on my desk. I found the noise was emanating from a cup that contained the pupal case of a butterfly and a moth. I set the cup in front of me for observation. The noise continued intermittently for a few minutes. Then it quit. When I glanced up, I saw this freshly emerged ichneumon wasp.