Dry fly
Green Mayfly Dun
Generic mayfly-hatch dun
Trout · GraylingSurface
Generic large green-olive burrowing-mayfly dun — the European danica/Ephemera 'mayfly' of the duffer's fortnight.
Fish this when
During the European mayfly (danica) duffer's fortnight in late May and June, on rivers and lakes with silty marginal beds where duns hatch steadily through the day.
Why it works
Its unfussy green-olive dun profile covers the spread of size and shade across a mixed Ephemera hatch, so it keeps working as naturals vary through the two-week emergence.
Naturals it imitates
Green/Burrowing Mayfly dun (Ephemera)
Typical zone & fishable range
usually
Surface
Film
Subsurface
Deep
Setup sensitivity: medium
Quick facts
Tying difficulty
Beginner-friendly