New critter post! This is the Papilio polyxenes or Black Swallowtail Caterpillar. I found this guy on a Zizia aurea (Golden Alexanders) that looked like he'd had a feast on it. The coolest thing about these guys is that they have an osmeterium which is a fleshy, neon orange gland they keep inside their foreheads. When threatened, they inflate it to frighted off predators. It looks like a snakes tongue and emits a foul smell. I got a shot of a partially inflated one but when fully inflated it really does look like a snakes tongue. I also just found out that I saw this guy in an earlier level of development where they mimic bird poop to avoid getting eaten, check it out: