TRAVERSE CITY (AP) — The Trump administration on Thursday delayed what would be the first endangered designation for a bee species in the continental U.S., one day before it was to take effect.

The U.S. Fish and Wildlife Service adopted a rule Jan. 11 extending federal protection to the rusty patched bumblebee, one of many types of bees that play a vital role in pollinating crops and wild plants. It once was common across the East Coast and much of the Midwest, but its numbers have plummeted since the late 1990s.

Federal law requires a 30-day waiting period before most new regulations become effective. The addition of the bumblebee to the endangered species list was scheduled for Friday. The listing would require the service to develop a plan for helping the bee recover and provide more habitat.

No other pending endangered-species listings are affected by Trump’s freeze, said Heather Swift, spokeswoman for the Department of Interior, which includes the Fish and Wildlife Service.