Portal:San Francisco Bay Area/Selected article/92

The Mission Blue (Aricia icarioides missionensis) is a blue or lycaenid butterfly subspecies native to the San Francisco Bay Area of the United States. The butterfly has been declared as endangered by the US Federal Government. It is a subspecies of Boisduval's Blue (Aricia icarioides).

The Mission Blue depends on a very specific host plant called the lupine. As such, its habitat is restricted solely to the U.S. state of California. More specifically, it is limited to a range of five known areas where Mission Blue colonies have been confirmed. Those areas are subject to a range of conservation and habitat restoration action.

P. i. missionensis is federally endangered and found in only a few locations. Its habitat is restricted to the San Francisco Bay Area, specifically six areas, the Twin Peaks area in San Francisco County, Fort Baker, a former military installation managed by the National Park Service (NPS), in Marin County, the San Bruno Mountain area in San Mateo County, the Marin Headlands, in Golden Gate National Recreation Area (another NPS entity), Laurelwood Park & Sugarloaf Open Space in the city of San Mateo, and Skyline Ridge, also in San Mateo County. (more...)