Endangered and threatened wildlife and plants, 12-month finding on a petition to list four subspecies of Great Basin butterflies as endangered or threatened species: Notice of 12-month petition finding, published Sept. 4, 2012, finding made Sept. 4, 2012 Text After a 12-month review, the U.S. Fish and Wildlife Service finds that the petition to list four subspecies of Great Basin butterflies (White River Valley skipper (Hesperia uncas grandiosa), Steptoe Valley crescentspot (Phyciodes cocyta arenacolor), Baking Powder Flat blue butterfly (Euphilotes bernardino minuta), and bleached sandhill skipper (Polites sabuleti sinemaculata)) in Nevada as endangered or threatened species under the Endangered Species Act does not provide scientific and commercial information indicating that listing these four butterfly and skipper subspecies is warranted at this time. Endangered and threatened wildlife and plants, 12-month finding on a petition to list the mardon skipper as threatened or endangered: Notice of 12-month petition finding, published Sept. 4, 2012, finding made Sept. 4, 2012 Text After a 12-month review, the U.S. Fish and Wildlife Service finds that the petition to list the mardon skipper (Polites mardon) as a threatened or endangered species under the Endangered Species Act does not provide scientific and commercial information indicating that listing this species is warranted at this time. At its discretion, after additional review of the subspecies Polites mardon mardon and Polites mardon klamathensis, the USFWS finds that listing for these subspecies is also not warranted at this time.