The season of blue butterflies has begun. Which in my opinion is the most beautiful butterfly.
The most beautiful is pretty personal (not only for the butterflies of course). And the "blues" are many species, not one! My personal favorite from the European butterflies is the Apollo (Parnassius appollo). Actually there are several striking-looking butterflies in Europe (look at Apatura ilia when the wings are at the right angle for example...)!
