Well, I wrote that a very long time ago when I first started this site. Since then we've had hurricanes and drought. My butterfly bush that this Great Southern White Butterfly was nectaring on has long since passed away.
The mustard seedlings got eaten down to nothing, and I have no idea what happened to the caterpillars.
I'm still looking for another one of these butterflies to get better pictures of. If they ever lift the water restrictions, I'll plant more mustard to attract them.
Tim Adams emailed me to let me know which white butterfly this was; Thanks Tim! He says it's a female Great Southern White Butterfly.