Celebrating the misunderstood: Mercedes Burns featured in new book on North America’s overlooked critters

Wed, 04 Mar 2026 12:07:19 -0500
biology, cnms, news, quick-post, science-and-tech

GRIZZLED: Love Letters to 50 of North America’s Least Understood Animals spotlights the quirky, often-misunderstood inhabitants of our backyards and beyond. It hits bookstores this week, and Mercedes Burns, associate professor of biological sciences, is featured in an essay that dives into the world of harvesters—better known as daddy longlegs.

The essay debunks the common myth that harvesters are the most venomous spiders in the world, but only harmless because their mouthparts are too small to bite a human. In fact, rather than being spiders at all, Burns shares that they are intriguing arachnid relatives. She unpacks their survival tactics, like shedding legs to escape predators, and other eccentric behaviors that make these gangly denizens more endearing than eerie.

“I’ve studied arachnids for over a decade, and learning about them has opened my eyes to the diversity of less-appreciated and absolutely fascinating species that occur in North America,” Burns shares. “I am excited to join the league of researchers who contributed to this book, and I hope that readers find a new local species to love.”

Burns’ passion for arachnids isn’t new—and it’s been weaving its way into public consciousness for years. In a 2020 New York Times piece, she demystified the fuzzy clusters of daddy longlegs that sometimes “grow” on buildings, turning a gross-out moment into a lesson on their harmless, communal nature. She’s also weighed in on arachnid feats, such as spiders devouring snakes up to 30 times their size, as featured in a 2021 Smithsonian article.
Mercedes Burns handles one of her study organisms in the lab. (Marlayna Demond ’11/UMBC)
At UMBC, Burns’ impact extends beyond the page. Her 2023 NSF CAREER Award funds research on arachnid evolution in Japan, blending fieldwork with student mentorship to nurture the next generation of scientists and champion arachnid appreciation. There is even a trapdoor spider species named Ummidia mercedesburnsae in her honor.

Burns’ work reminds us that even tiny creatures deserve our attention and care. Dive into science journalist Jason Bittel’s GRIZZLED to discover your own “local species to love.”