(Glaucopsyche lygdamus xerces)
|syn. Glaucopsyche xerces|
USA: San Francisco / California
Xerces Blue - USA
extinction date: last seen in 1941
|The Xerces Blue was treated
as a full species until recently, but is now considered as subspecies of
the Silvery Blue.
This butterfly lived in a very small area on the same peninsula which is now covered by the city of San Francisco. During the construction of this city the habitat of this subspecies was more and more, in the end completely, destroyed.
The last life specimens of this subspecies were seen on the 23. March 1941.
Xerces Blue (Glaucopsyche lygdamus xerces), male
Depiction: Alexander Lang