I forget where I am
I believe this is Apheloria virginiensis. I did indeed get so lost in looking at it that I couldn’t remember where I was until I stood up. And it’s not as if I’d never seen one of these before; they’re fairly common in the forest leaf duff.
I processed this on my phone, as usual, and didn’t notice until uploading it to the laptop just now that it’s slightly fuzzy. Oh well.