Flight-period Central Europe: from Mid April to Mid October

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Imago

Conservation Status in Austria: Least Concern (LC)

  NE DD LC NT VU EN CR RE EX
Austria
Vienna - Austria

English:Short-tailed Blue
German:Kurzschwänziger Bläuling
Danish:
Date:29/07/2012
Location:Austria, Niederösterreich, Tulln
 
Copyright:Per Hoffmann Olsen
Camera:Canon EOS 50D
Lens:Sigma 150mm APO Macro
 

There are two other Butterflies which are almost identical to the C. argiades. The first is the Cupido decoloratus, which doesn't have the orange spots seen clearly on this photo. The other is the Cupido alcetas, which also doesn't have the spots.

The further in the flight-period you come, the more difficult it becomes to determine the C. argiades due to the wear and tear of the wing scales.