Endangered and Threatened Wildlife and Plants; 12-Month Finding on a Petition To Delist the Idaho Springsnail; 12-Month Finding on a Petition To List the Jackson Lake Springsnail, Harney Lake Springsnail, and Columbia Springsnail; and Proposed Rule To Remove the Idaho Springsnail From the List of Threatened and Endangered Wildlife

摘要

We, the U.S. Fish and Wildlife Service (USFWS, Service, or we), under the Endangered Species Act of 1973, as amended (Act), announce combined 12-month findings on a petition to delist the endangered Idaho springsnail (Pyrgulopsis idahoensis) and a petition to list the Jackson Lake springsnail (P. robusta), Harney Lake springsnail (P. hendersoni), and Columbia springsnail (P. species A (unnamed)). Evidence collected subsequent to the December 14, 1992, listing (USFWS 1992, pp. 59244-59527 (57 FR 59244)) of the Idaho springsnail indicates it no longer constitutes a distinct species. It is now described as the Jackson Lake springsnail (P. robusta), a single taxon, composed of four previously distinct springsnail species (Idaho, Jackson Lake, Harney Lake, and Columbia springsnails), and therefore we are proposing to remove the Idaho springsnail from the Federal List of Endangered and Threatened Wildlife. We evaluated the best available scientific and commercial information regarding the status of, and threats to, the newly described P. robusta, and determined that the threats to the species do not warrant its listing at this time. Additionally, based on our status review of P. robusta,