How did underground bee colony get discovered?

Underground bees under a New York cemetery

A team from Cornell University uncovered what appears to be an enormous underground colony of subterranean bees beneath East Lawn Cemetery in Ithaca, New York.

The key observation was made during a walk through the cemetery, where researchers found evidence of a massive aggregation of bees belonging to Andrena regularis (a genus of ground-nesting mining bees). The colony was estimated at about 5.5 million individuals.

Researchers’ main goal is not just to estimate the population size, but to understand how such underground bee communities function—especially the dynamics of how they grow, persist, and interact with other organisms underground.

Because subterranean insects live largely out of sight, even basic questions—such as how big colonies can get, how stable their occupancy is, and how environmental factors affect them—are hard to answer without direct field discovery like this.

The work also matters because ground-nesting bees play a significant role in pollination networks, and their habitat requirements can be sensitive to soil conditions, disturbance, and climate factors. Large, well-characterized colonies can therefore improve conservation planning by giving scientists a clearer picture of where robust bee populations exist and what pressures they face.

Finally, the discovery provides a rare real-world setting for studying host–parasite relationships among bees and their underground associates. That kind of ecological detail is typically difficult to observe in nature, since underground interactions are often missed by standard surveys.

Overall, the report highlights both the scale of hidden biodiversity and the practical value of “walking the site”—and then studying it rigorously—for understanding bee ecology in a way that can inform better environmental management.