Little Blue
Cupido minimus

Male, Switzerland, May 2011

Male, Switzerland, July 2013

Switzerland, June 2013

May 2005, Switzerland (male)

The same male, with another in the background (that I didn't notice when I took the picture)

A male little blue on the larval food plant, kidney vetch, on the South Downs of England

Fresh, very well-marked little blues in Switzerland

The underside

Cupido minimus

A cluster of little blues in Switzerland, August 2014