Flight-period Central Europe: from Mid April to 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:Pale Clouded Yellow
German:Weißklee-Gelbling
Danish:Gul høsommerfugl
Date:31/05/2019
Location:Austria, Wien, Gütenbachtal
 
Copyright:Per Hoffmann Olsen
Camera:Canon EOS 7D
Lens:Sigma 150mm 1:2.8 APO Macro with 2.0 Teleconverter
 

It is very difficult to detemine this species. It could be C. hyale but also C. alfacariensis. From the area where i took the photo both species are known.

Same species