
Photographed on San Bruno Mountain in Buckeye Canyon, city of Brisbane, county of San Mateo, California.
The following information is from www.knowyourinsects.org via email:
Gorgeous butterfly! It looks like a Lorquin's admiral -- very close to a White Admiral -- but the White Admiral isn't found in California. You actually sent me a couple of great shots of it a few years back: www.knowyourinsects.org/Lepidoptera1_Butterflies_Page2.ht... (from where the following information is from).
Lorquin’s admiral, Limenitis lorquini, subfamily Limenitidinae, family Nymphalidae.
□ Lorquin admiral’s is a fighter: The males will defend their territories, not only attacking other intruding males, but also buzzing large birds that venture into their turf.
□ Lorquin’s admiral gets its name from entomologist Pierre Joseph Michel Lorquin. Originally from France, he traveled the world from 1849-1869, studying insects in northwestern Africa, Spain, China, the Philippines, Southeast Asia, Colombia, New Guinea and the western United States. Quite a life!