Edit: this has now been blogged (with more pics!) at Big Bend Birds & Nature - when inch worms grow up.
I should be blogging this over at the other blog, but I managed to forget to take a picture of an inch-worm that adopted us. I harvested some mesquite nibbles for the hubbardi bunch and the little critter caught a ride and found itself in with a bunch of non-geometers. So while I forgot to take its picture, it thrived. Then it started to look pretty bad and I felt terrible and was certain that, along with ~40 other caterpillars this season, it had died. It turned this bizarre shade of teal blue on one end and darkened and instead of being a long, juicy inch-and-a-smidge long... it was barely half an inch long.
But then it turned into a pupa. How ridiculously awesome!