Dąbrowski has an unidentified “Masonic Symbols”, see below. The best I can make of this symbol is “angel”. I would be surprised if it was a butterfly. Something else altogether maybe? I don’t know in which degree this image is featured and if there are other systems or degrees with this symbol.
Dąbrowski p. 166 “Masonic Symbols”, it is the same design as the apron that Lafayette presented to Washington in 1870