Butterflies on San Bruno Mountain

Observations of butterflies on San Bruno Mountain ecological reserve. This area is topped with a four mile long ridge with lots of hiking trails. The mountain is a host for several rare and endangered butterflies. In the 1960s, a nonprofit organization called Save the Bay prevented developers ...more ↓

Azures

Celastrina is a genus of butterfly in the family Lycaenidae found worldwide.

Acmon Blue

The Acmon Blue (Plebejus acmon) is a North American butterfly. It ranges mainly in California but can be seen north to Oregon and south through Baja California. The tops of the wings are blue with dark edges in males and brown in females. Its underside is white with black spots for both sexes with a red-orange band on the hindwing. Adults feed on nectar while caterpillars can ...more ↓

Silvery Blue

The Silvery Blue (Glaucopsyche lygdamus) is a small butterfly native to North America. Upperside is a light blue in males, a dull grayish blue in females. Underside is gray with single row of round spots of differing sizes depending upon region.

eastern tailed blue

The Eastern Tailed-blue or Eastern Tailed Blue (Cupido comyntas), also known as Everes comyntas, is a common butterfly of eastern North America. Males are generally blue on the upperside of their wings while females are lighter blue to brown or charcoal in coloring, but there are also varieties of purple and pink found in both sexes. The underside coloration ranges ...more ↓

mission blue butterfly

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).

Boisduval's Blue

Boisduval's Blue (Aricia icarioides) is a butterfly of the Lycaenidae family found in North America.

Edited by zoozannah, some rights reserved (CC BY-SA)