Harvey wrote:
I used to call these macros - ya folks here on UHH set me straight. I took quick a ride up and over the Sierra Mnts today Pioneer, CA to and from Minden, NV 160 mi round trip- while we stopped for a quick smoke break I found the strange to me white bulb type "things" and while shooting them I found the wasps/hornets willing to pose for me.
Harvey
If so, they may be a gall of some type.
It may be full of a type of aphids. They excrete honeydew.