Little Yellow Stoneflies
.............................Fly Fishing Yellowstone National Park
05/20/08

Little Yellow Stoneflies (Perlodidae Family) - Adults

Adults:
Different species of Little Yellow Stoneflies deposit their eggs at different times of the
day depending on the species and the time of year they hatch. Some of them only do
that during the evenings.  The
isoperia species, or Yellow Sallies, usually start
depositing their eggs in the afternoons prior to dark. This is one thing about the Yellow
Sally that makes them very important.
You should actually observe stoneflies depositing their eggs before you spend time
imitating the process. They are large enough that you can easily see them dropping
down to the surface, usually bouncing along on the surface, dropping their eggs.
Sometimes they will lite on the surface for a short time but for the most part, they knock
their eggs off by touching the surface. They will usually deposit their eggs in the riffles
and runs. Where ever you see them depositing their eggs is where you should fish
imitations of the adult.
The different species of the Little Yellow Stoneflies are different sizes. You should
match the size as close as possible. You should be able to find an adult along the
banks in the bushes or grass.
Presentation:
It would be nice if you could imitate the actual bouncing type of action but I can't make
my imitation fly again after it hits the water. You can jerk the fly around some but I end
up spooking more trout than I fool. I think it is best to use a drag free drift. An up and
across presentation work best for this.





















Coming Up Next:
Little Yellow Stoneflies - Fly Pattern Colors

Copyright 2008 James