Whoa! That was fast!

So, we picked up Ziggy Stardust on our walk Saturday night, and then last night I found him kind of hanging upside down on the top of the Bug Box.
"Either this guy's going to die, or he's getting ready to change into a butterfly," I thought.
Sure enough, we woke this morning to find Ziggy Stardust the caterpillar gone and a small green chrysalis in his place! Now I kind of wish I had peeked at him through the night so I could have seen him in the process of changing.
Anyway, in a week and a half to two weeks, we'll hopefully have a Monarch butterfly.
I read somewhere that sometimes a wasp will lay its eggs in a monarch caterpillar, and you don't know until it comes out of the chrysalis, and it's a wasp instead of a butterfly. Ugh! I hate wasps! I sure hope we got a "good" caterpillar!