My first suspicions were confirmed: a Lamellicorn, a scarabaeid in the larval state, is the first food of the Wasp whose cocoon I have just unearthed.
"More Hunting Wasps"
J. Henri Fabre
I found a few cocoons, nearly all broken, like the one which I already possessed, and, like it, bearing on their side the tattered skin of a larva of the same scarabaeid.
"More Hunting Wasps"
J. Henri Fabre
Then with which scarabaeid does the empty skin which is still unknown to me correspond?
"More Hunting Wasps"
J. Henri Fabre