The Sulphur Dun is the dorothea
species the huge Ephemerella
genus. This is one of those
mayflies that is commonly
called both "Sulphur Dun" as well
as "Pale Evening Dun" and
another good reason for using
scientific names. These mayflies
usually start hatching mid to late
afternoon.
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Nymph
Spinner
Emerger with
Trailing Shuck
Emerger
Dun
Mayflies: Sulphur Dun
Sulphur Dun (Imitations)
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Copyright 2013 James Marsh
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