Before he went into human sexuality in a big way, pride-of-Hoboken Alfred Kinsey was a specialist in gall wasps, a vast and largely unknown kingdom, at least to us non-specialists.
Back in early February, I posted about two species of gall wasps on an oak in Green-Wood. I bought a couple of the galls home to photograph. One of these had no exit holes, so I popped it into a little plastic box with a magnifying lens built into it. Yesterday, I noticed something moving in it. From the corner of my eye, I thought ant, and thought it must be outside the box. But it was this 5mm gall wasp inside, crawling about. (Ants and wasps are of course in the same order, Hymenoptera, so the morphological similarity makes sense.)
I placed the box into the freezer for about a minute to get this wasp to play dead momentarily for the camera.