The European Paper Wasp is a major predator in my garden, probably yours, too.
I'm also seeing Assassin bugs, there's Japanese Ladybugs, they'll take up to a second instar. Ants are predators too, housing keep for their aphid cows. Spiders.http://www.amazon.com/Enlarged-Updated- ... 604&sr=1-2
I highly recommend "Milkweed, Monarchs, and More". They have an update version that is supposed to lay flat.
If you go thru the Monarch Watch Amazon Portal to buy any books, Monarch Watch gets part of the money.http://monarchwatch.org/amazon/
Just click in the area that says "Take me to amazon.com"