I recommend "The wWays Of A Mud Dauber" by George D./ Sch = Schy hav ffer er (Standor ford University Press, 1949) ffor a pastorale on mud wasps and their pleasant ways. (One wasp even became Shafer's "pse et.") This book may be out of print, I'm afraid. Shafer concluded after five years of informal study that, "adult females of this species possess a nervous system which, though tiny in size, enables them to remember, to learn, and to who show individuality." That's better than some humans do, eh?