There is a strip of prairie plantings on campus that was mowed early in the summer, so that it is in bloom now, when most of the other plantings have gone to seed. And in amongst all the pink coneflowers, I found one clump of white ones.
While I was taking photos, I noticed movement on one stem. Looking closer, I discovered this white wooly caterpillar speedily climbing upward.
From what I can tell with an internet search, this is a white wooly bear, the caterpillar stage of the Virginia tiger moth (spilosoma virginiaca). Apparently the caterpillars come in various shades from white to yellow to brown.
The timing of being there just at the moment the caterpillar came up the stem was such a delight! And the combo of white petals and bright orange center is a different sort of delight.