Hadn't thought of the panythose idea, seems reasonable though.
I haven't tried spandex pants or lycra. Certainly has the advantage of being of lighter weight, but I cannot say for certain if they have enough thickness to ward off a sting.
And as interesting as panthose sounds, not gonna try it. I bought some zip off (from long pants to shorts) pants for $10 at a value store. Lighter than cargos, I am guessing these will work great.