They're one of the insignia of summer, their winking lights, inextinguishable lanterns through the long, warm evenings, as emblematic of the season as cicada music and high humidity. When we were kids we called them "lightning bugs"; officially, though, they're known as fireflies. But the little aviators would have you know they're neither flies nor bugs -- they're beetles. They're also the world's most efficient light producers. In certain locales some of them are even known to synchronize their flash signals, so they're show-offs too. Learn more about this intriguing creature via the Firefly Festival tonight at 8 p.m. at the Sophia M. Sachs Butterfly House (in Faust Park, 15193 Olive Boulevard, Chesterfield; 636-530-0076 or www.butterflyhouse.org). To facilitate the outdoor portion of the event, attendees are asked to bring one flashlight per person. Admission is $10 to $12.
Wed., June 25, 8 p.m., 2014