Nikola wrote
Did you notice at #3 a line (from the chest to the proboscis) parralel with butterfly's "throat"? I'm wandering what is it?
Interesting observation Nikola. I think what we are seeing here are the much reduced two front legs held up close to the body (if you look closely you can just make out the
front right leg too). In the Nymphalidae only the back 4 legs are used to stand on and the front pair are reduced to almost stumps and held up against the body. Sometimes its almost impossible to see them and it looks as if the butterfly has only 4 legs. Because of their small front legs they (the Nymphalidae) are sometimes called brush-footed (because the front legs are modified into brushes) or four-footed butterflies. Other species of butterfly stand on all six legs.
Bruce