Energy & environment · 26/04/2010Updated: 10/17/2026 · 1 min read

U.S. Fish and Wildlife Service Announces 90-Day Finding on Petition to List Harlequin Butterfly as Endangered

The U.S. Fish and Wildlife Service has initiated a review of the harlequin butterfly, a Puerto Rico endemic, to determine if listing it as endangered under the Endangered Species Act is warranted, following a petition that presents substantial scientific or commercial information.