The U.S. Fish and Wildlife Service told The Associated Press it was adding the bee to the endangered list, and would develop a recovery plan encouraging people to provide more habitat and reduce pesticide usage. Many of the steps needed to rescue the rusty patched bumblebee might also help other struggling bees and monarch butterflies, which pollinate a wide variety of plants, including cultivated fruits and vegetables, officials said. “Pollinators are small but mighty parts of the natural mechanism that sustains us and our world,” said Tom Melius, the service's Midwest regional director. “Without them, our forests, parks, meadows and shrublands, and the abundant, vibrant life they support, cannot survive, and our crops require laborious, costly pollination by hand.”
Rusty patched bumblebees alight on a flower in Peoria, Illinois
The rusty patched bumblebee buzzed across the East Coast and much of the Midwest in high numbers as recently as the 1990s. Today, only scattered populations remain in 13 states — Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Minnesota, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and Wisconsin — and the Canadian province of Ontario. The bee’s historic range and the number of observed colonies have plummeted by about 87 percent since the late 1990s.
Cause of decline unknown
The crash happened so quickly that few researchers took notice until the damage was largely done. They're investigating a number of potential causes, including disease, pesticide exposure, habitat loss, climate change and the domino effect of falling populations making it harder for bees to find suitable mates.
The Xerces Society for Invertebrate Conservation, which petitioned the government to list the rusty patched bumblebee as endangered, previously said the bumblebee's decline probably was caused by the spread of bacteria or viruses from bumblebees raised commercially to those in the wild. The group, based in Portland, Oregon, also blamed widespread use of long-lasting insecticides. “The Fish and Wildlife Service has relied upon the best available science and we welcome this decision,” Rich Hatfield, the society's senior conservation biologist, said Tuesday. “Addressing the threats that the rusty patched bumblebee faces will help not only this species, but countless other native pollinators that are so critical to the functioning of natural ecosystems and agriculture.”
Continent-wide concern