Endangered and Threatened Wildlife and Plants; Endangered Species Status for Suckley's Cuckoo Bumble Bee

We, the U.S. Fish and Wildlife Service (Service), propose to list the Suckley's cuckoo bumble bee (Bombus suckleyi), an invertebrate species from North America, as an endangered species under the Endangered Species Act of 1973, as amended (Act). This determination also serves as our 12-month finding on a petition to list the Suckley's cuckoo bumble bee. 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 species as an endangered species under the Act. 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. Due to the current lack of data sufficient to perform required analyses, we conclude that the designation of critical habitat for the species is not determinable at this time.