Most entomologists have received a phone call along the lines of, “YOU WON’T BELIEVE THIS CRAZY BUG.” These calls often feature the same few species, and entomologists usually can make a quick tentative ID of the “usual suspects.” Here are some of eastern North America’s repeat offenders:
Unlike their periodical cousins, adult dog day cicadas turn up each summer. Males sing to females using membranes called tymbals.1 The resulting sound, resembling a shaking metal sheet, is produced when the males flex their muscles, buckling the tymbals.
This spider has been wrongly accused! The golden garden spider is often found on the sides of homes. Females are large and vibrant, while males are small and drably colored.2 The female’s bold, aposematic coloring may be frightening, but she’s unlikely to bite. If found inside, try gently moving her outdoors to safety.3
These voracious predators are aquatic and often become disoriented by porch lights as they’re flying to new habitats. To move this bug to safety, use a safe transport technique3; this species (and its close relatives) can deliver a painful defensive bite when stressed.4
House centipedes are native to the Mediterranean but have spread globally with humans.5, 6 They have 30 legs (one pair per body segment) and often turn up in basements, where they prey on smaller invertebrates.7