Switzerland, July 2006
Switzerland, May 2007
Switzerland, May 2007
Mating pair, Switzerland, May 2007
Click HERE for a video of idas blues interacting with ants.
Female, Switzerland, 2004 (this individual is exceptionally blue, I think)
Norway
These are not briliant pictures, but they show enough. The idas blue is
very like the silver-studded blue, including having silver-studs on the
underside hindwing. However, the border of the forewing is generally
narrower and the black marks inside the orange submarginal lunules
generally sharper. If you get one in the hand, silver-studded blues
have a spine of the tibia of the foreleg which idas blues lack. This is
not a good field mark!