Lustrous Copper (Lycaena cupreus)
Yosemite National Park initiated its first annual "4th of July" butterfly count in the Tuolumne Meadows area in summer 2012. Yosemite coordinates this event in association with the North American Butterfly Association
(NABA), an organization that conducts long-term monitoring of butterfly populations all over North America. The purpose of the NABA counts is to determine how many species and individual butterflies can be observed within a 15-mile diameter circle, during a 24 hour period, within the same date-span year after year. Participants spend the day gathering data toward long-term monitoring; raising public awareness toward butterfly conservation; and socializing and having fun with other butterfly devotees. The Yosemite National Park Butterfly Count circle is centered on Tioga Pass and includes hotspots such as Gaylor and Granite Lakes, Lundy Lake, Mono Lake, Lee Vining Canyon, Dana Meadows area, Saddlebag Lake, and up to the crest above Gardisky Lake.