The only species currently in this genus reported to produce fishable hatches is Nixe lucidipennis.
6 species aren't included.
Angling books sometimes mention hatches of Nixe criddlei and Nixe simpliciodes. These species have been moved to the genus Ecdyonurus.Hatching BehaviorThese species hatch in or near the surface in calm water. Emergence is quite fast, but the duns may drift a while.Spinner Behavior
Time Of Day: DuskThe female spinners oviposit by flying over the water and dropping down to the surface to release some eggs, then taking off to do it again. They eventually fall spent (Spent: The wing position of many aquatic insects when they fall on the water after mating. The wings of both sides lay flat on the water. The word may be used to describe insects with their wings in that position, as well as the position itself.).
Pictures of 1 Mayfly Specimen in the Genus Nixe:
Male Nixe inconspicua Mayfly Dun
View 13 PicturesThis pretty little dun was part of a sparse midsummer evening hatch on a large Catskill river.
I could not identify it by following a species key step by step, but I tentatively keyed it to the genus Nixe, and based on distribution maps and physical descriptions the most likely species is Nixe inconspicua.
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