Insects and other foods the trout may be eating:
1.    Blue-winged Olives (Little BWOs)
2.    Mahogany Duns
3.    Little Yellow Quills (
Heptagenia Group)
4.    Little Yellow Stoneflies
5.    Needle Stoneflies
6.    Slate Drakes
7.    Sculpin, Minnows (Streamers)
8.    Grasshoppers
9.    Ants (includes Flying Ants)
10.  Beetles
11.  Craneflies

Great Brown Autumn Sedge - Adult
I've noticed in email and conversations with anglers that some have a different idea
about when to fish imitations of the adult Great Brown Autumn Sedge than what they
probably should. These caddisflies mostly fly at night but on cloudy days, you will
sometimes see some of them flying as well as in the bushes. That doesn't necessarily
mean that it's a good idea to tie on an imitation of the adult or pupa, and start fishing
it at that particular time for two reasons. One reason is they live for quite a relatively
long time out of the water. It may be another day in time before the females begin to
deposit their eggs. The other reason is they will not usually deposit their eggs in the
middle of the day. The activity usually takes place in the evenings but starts late in the
day when the sun sets, but earlier on cloudy days. This is also true of the hatch. They
are a lot like the Little Yellow Stoneflies. They may both start hatching and depositing
their eggs near dust. The same time it's a good idea to be fishing an imitation of the
pupa, it's also a good time to fish an imitation of the egg layers.

The problem some anglers have is that they will see the big yellow/orange/brown
caddisflies during the middle of the day and tie on an imitation of the adult. The
results is usually less than satisfactory. You may hook a trout or two using the fly, but
they certainly won't be focusing on eating them at the time. This usually happens later
on in the hatch period after they get used to seeing the egg layers on the water.

There's also the same old dry fly, nymph problems of preference. Right when you
need to be fishing an imitation of the pupa (at the time they are starting to hatch) it
may also be the best time you have to fish an imitation of the egg layers. You
probably won't catch near as many trout on the adult fly imitating the egg layers as
the pupa, but it's more fun and easier to fish than the pupa imitation. That decision is
up to the angler. I'm just pointing out the best odds for success, not advising anyone
as to which way to go.

Knowing when to fish an imitation of the adult is really quite easy. Fish an imitation of
the adult when you see the caddisflies on the water depositing their eggs. That's the
only time they will be on the water. The rest of the time they will either by flying or in
the trees and bushes. If your camping out, you will usually see plenty of them at night
around the lights if the hatch is underway, but again, that doesn't necessarily mean
they will be laying eggs the following day.  

Knowing where to fish an imitation of the adult is also quite easy to determine. Fish it
exactly where you see them depositing their eggs. As long as your hidden from the
trout, cast the fly anyway you can to get it to the same area of water. Let it dead drift a
few feet and repeat the cast to a slightly different but nearby area. Sometimes the
trout will swim in and out of the deeper areas of water and eat the egg layers,
especially if their are laying eggs in the fairly shallow water. This usually takes place
at the very ends of the runs and riffles, where the water first begins to slow down. It
sometimes takes place at the tailouts of pools.

Our Perfect Fly imitation of the adult has a high floating, foam body with soft hackle to
imitate the legs. It's wings are made of raffia or Swiss straw, as some call it. The eyes
and antennae are made of nylon.

Perfect Fly Great Brown Autumn Sedge Adult

Copyright 2011 James Marsh