On Nov. of 2010 I did a post on the Great Golden Digger Wasp.
I just watched one carry away a Monarch caterpillar. So …if you have a garden…these are going to become your best friends. I’ve seen them flying around my milkweed plants while I was searching for caterpillars….and they never bother me…but I was surprised when one grabbed the caterpillar before I could get it and fly away with it.
They spend a lot of time on my Bottlebrush bushes. I believe they are nectar feeders but their young feed on insects that are paralyzed and put in nests in the ground. Some use existing holes but most of the ones I see are looking for places in the ground.