04/14/12

Insects and other foods the trout should be eating:
Hatching:
1.    Blue-winged Olives and Little BWOs
2.    Blue Quills
3.    Cinnamon Caddis (Mostly Abrams Creek)
4.    Little Short Horned Sedges
5.    Eastern Green Drakes (Abrams Creek)
6.    Hendricksons & Red Quills
7.    American March Browns

Most available/ Near hatching and/or other types of available food:
8.    Sculpin, Minnows (Streamers)

KISS A Bug Series - Eastern Pale Evening Duns - Part 1
General

The Eastern Pale Evening Dun is one of those mayflies that points out the disadvantage of the
use of common names about as well as any. To begin with, Eastern is added to distinguish it
from the Western Pale Evening Dun, usually just called the Pale Evening Dun. The Pale
Evening Dun is the
albertae species of the Epeorus genus, a completely different insect that
inhibit the streams of the western states. The female of this mayfly is often called the Pink
Lady.

In the East, more particularly the Southeast, this mayfly is confused with the Sulfur which is the
Ephemerella dorothea. The Eastern Pale Evening Dun, though closely related, is the
Ephemerella invaria.  I realize this is not so KISS or keep it simple stupid but I'm only pointing it
out for those who know a little about aquatic insects that end up confusing it with the Sulphur.
There are important differences in color, hatch times, habitat and methods of imitating theses
two mayflies

By the way, this mayfly is also confused in most of our local tailwaters, including the South
Holston and the Clinch River tailwaters. Both the
invaria and dorthea species exist in plentiful
quantities but the difference is recognized only be a few anglers. It's one reason the hatch
periods for these mayflies in those streams extend so long. It isn't the only reason, the main
reason being the constant water temperature discharges from the dams, but it is does extend
the hatch times a lot.

The body of the Sulphur is more of a true sulphur color than the Eastern Pale Evening Dun.
The Eastern Pale Evening Duns body is a tannish, yellow color. The sulphur is also a hook
size and sometimes two hook sizes smaller than the Eastern Pale Evening Dun, depending on
the gender. These mayflies usually hatch late in the afternoon from about 4:00 to 7:00 P. M.
They hatch approximately two weeks earlier than the Sulphur Duns which are also in the
streams of the park in isolated areas of the larger streams.

Generally, you will find Eastern Pale Evening Duns in moderately flowing water. These mayflies
like faster moving water than the Sulphurs they are often confused with. Most of the time you
will find them at the ends of long runs. Large pockets located within fast water areas may hold
Sulphurs, along with shallow areas of the pools. I will be covering the Sulphur in our KISS
series a little later.

We show these starting to hatch the first of May but since the warm water during Winter
progressed the development of the insects ahead of their normal schedule, I don't doubt them
starting to hatch any time, especially in the lower elevations. By the way, the lower elevations
are about the only place there are many of them. There's a few in the middle elevations of the
larger streams, but for the most part they are scarce. They are one of those insects that are
found in large quantities but only in isolated areas of the streams. Like most other crawler
nymph mayflies, all in all, they are not plentiful in the Smokies.
Copyright 2012 James Marsh
Above is a thumbnail image of the Eastern Pale Evening Dun. Below the Sulphur. You can see
the difference in the color of the duns body. The Eastern Pale Evening dun (incorrectly called
Sulphurs by many) is more of a tanish yellow and the true Sulphur a sulphur color. As
mentioned above there are other differences. Click on the images to enlarge them.