The S.ignita is widely spread throughout all Europe and its imitation is a must-have in the fly box of any serious dry fly angler.
Serratella ignita hatches occur between May and September
Clean rivers rich in algae and well oxygenated are its ideal habitat
The view from below shows where the english name of the S.ignita comes from: BWO blue winged olive
Even if in Europe there are other mayflies that are similar (ie some Baetis or other species of the Ephemerellidae family) and for the sake of fishing may be referred to the generic categorization of BWO, the original alias is to be attributed to the S.ignita