The male is called the “Chocolate Dun” and the female is
called the “Olive Sulphur”. These mayflies are also called the
“Little Dark Hendricksons”. They are most abundant in
streams with lots of vegetation. The most abundant species is
the
Ephemerella needami.
We think the duns are close enough that one pattern will work
for it. However, the male and female spinners of this species
look very different. The females have a very rusty appearance
and for that reason we have two patterns for the spinners.
Nymph
Spinner Male
Emerger with
Trailing Shuck
Emerger
Dun
Mayflies: Chocolate Dun and Olive Sulfer
Chocolate Dun & Olive Sulfer (Imitations)
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Copyright 2013 James Marsh
Spinner Female
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$1.95
$1.95
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$2.25
$2.25
$2.25
$1.95
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