The Xerces blue butterfly went extinct along the San Francisco coast some 80 years ago. But scientists have identified a ...

The California Academy of Sciences used genetic testing to identify a blue butterfly species similar to the Xerces species ...

SAN FRANCISCO >> More than 80 years ago, a beautiful butterfly called Xerces Blue that once fluttered among San Francisco’s coastal dunes went extinct as stately homes, museums and parks ate up ...

After Hurricane Andrew ripped through South Florida in 1992, the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up ...