The Callippe silverspot butterfly is endangered, with populations only in the San Bruno Mountains and an Alameda County park. It requires specific habitat with violets, Johnny jump-ups, and hilltops to mate. Urbanization and agriculture destroyed over 80% of its habitat. Continued threats include invasive plants, pesticide drift, and lack of protected habitat. Potential solutions involve protecting remaining habitat, removing invasive plants, and using pesticide application best practices to prevent further endangerment.