New Orleans — The pesky buzzing and flying critters humans spend a lifetime swatting and squashing have been transformed into objects of study and veneration in a sparkling new museum. Dung beetles, scorpions, ants, dragonflies, earthworms, butterflies and termites get their due in the Audubon Insectarium, which opened June 13 on the first floor of the U.S. Custom House. It is the city's first major tourist attraction to open since Hurricane Katrina.