While social wasps, like hornets and yellow jackets, garner most of the publicity (most of it negative), the vast majority of wasp species, including digger wasps, spider wasps, and mud-daubers, are solitary. Elegant in appearance and distinctive in their actions, solitary wasps have long fascinated observers and have been the subject of narratives by such naturalists and scientists as Jean Henri Fabre, Niko Tinbergen, and Howard Ensign Evans...