.......................  ......Fly Fishing Yellowstone National Park

06/28/09


Fly Fishing Yellowstone - Little Yellow Stonefly Adults

The different species of the Little Yellow Stoneflies deposit their eggs in the
waters of Yellowstone National Park at different times of the day depending on
the species and the time of year they hatched. Some of them only do that during
the evenings. Most of the Summer Stoneflies (Peltoperlidae family) deposit their
eggs 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 important.

Presentation:
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. Wherever you see them depositing
their eggs is where you should fish imitations of the adult.

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. Up and across cast work best for this. I have caught as many trout
imitating the egg laying Yellow Sallies as I have caught in a short time span
imitating any insect in Yellowstone.

Copyright 2009 James Marsh