The flambé is a large triangular butterfly, with a wingspan of 50 to 70 mm (the male is smaller than the female) and recognizable by its large hovering flights. Its name comes from the coloring of its wings by black bands. Flambé lays eggs from April to August. The black larva becomes green after the second moulting. It winters as a chrysalis, then flies from late March to September. There is one, two, or three generations a year.