Threatened Species Status with Section 4(d) Rule for Puerto Rican Harlequin Butterfly and Designation of Critical Habitat

We, the U.S. Fish and Wildlife Service (Service), announce a 12-month finding on a petition to list the Puerto Rican harlequin butterfly (Atlantea tulita), a species from Puerto Rico, as a threatened species and designate critical habitat under the Endangered Species Act of 1973, as amended (Act). After a review of the best available scientific and commercial information, we find that listing the species is warranted. Accordingly, we propose to list the Puerto Rican harlequin butterfly as a threatened species with a rule issued under section 4(d) of the Act (``4(d) rule''). If we finalize this rule as proposed, it would add this species to the List of Endangered and Threatened Wildlife and extend the Act's protections to the species. We also propose to designate critical habitat for the Puerto Rican harlequin butterfly under the Act. In total, approximately 41,266 acres (16,699.8 hectares) in six units in the municipalities of Isabela, Quebradillas, Camuy, Arecibo, Utuado, Florida, Ciales, Maricao, San Germ[aacute]n, Sabana Grande, and Yauco are within the boundaries of the proposed critical habitat designation. We also announce the availability of a draft economic analysis (DEA) of the proposed designation of critical habitat for the Puerto Rican harlequin butterfly.