I would assume like gulf fritillaries, but I dont have any first hand expirence. See if anyone has raised them before.

to Jacob Berg, thank you.

Thia is what i did, I put them in a Tupperware with the paper napkin and fresh corky.Which I have to go all over my neighborhood . A hand shovel and bucket with small amount of water. so far it's doing great tripled in size. I do check many times during the day to replenish the leave, so they are the freshest they can be The Tupperware idea came from someone on our forum(2009).

I gave in, out of pure fear it would die on me, plus I found a very robust corky vine t local nursery and bought. I found more cats on the other corky. So I passed them all to the new one. they are all thriving and I'm collecting my neighbors corky and transplanting them to my yard. Maybe one day I'll try it when there is plenty corky outside. I think it would be a wonderful experience. My daughter encouraged me to do it. I think she would like that very much. My mom is gone now, but she would be happy we have butterflies back in our yard. She was an avid gardner, she passed on that to me and my daughter, but for right now she like to look only, haha.