|....................... .................... ...Fly Fishing Yellowstone National Park
New KISS Bug Series - Part 36
This little caddisfly brings more action than most anglers would expect. It's a case of "don't let the size of
the insect" fool you. My guess is it's the sheer number of them that creates the feeding frenzy they cause
at times. They also seem to concentrate along the banks as opposed to mid-stream, concentrating the
food for the trout. I think this may be due to the fact they deposit their eggs on the bottom and prefer to do
so where the water is shallow. This is pure speculation though.
The egg laying activity is the part of the hatch cycle that is the most fun to imitate. The Speckled Peter
adults appear late in the afternoons in large numbers. We have been able to catch trout late in the
afternoons and early evenings on the dry fly imitation of the adult.
Normally, we fish in an upstream direction, placing the fly close to the banks. If you find these caddisflies in
smooth water, you may need to make a longer downstream presentation. The thing you want to do,
whether you are fishing up or down stream, is to keep the fly fairly close to the banks. The trout are very
aware that is where they are congregating in the late afternoons and are obviously looking for them near
the banks. Almost all the takes we get on the dry fly adult imitation occur very close to the banks.
Be sure to fish the adult imitation on a dead drift and drag free. Don't be afraid to put the fly within a foot of
the bank. We have caught several trout in the Firehole River using this method as well as the Madison
River. At times the Speckled Peter caddisflies are mixed in with the White Millers and Spotted Sedges. I feel
sure the method will work at other similar waters where these caddisflies are present.
It's best to watch the water for rises from trout. If the trout seem to just swirl near the surface they are most
likely taking the emerging pupae. They also may possibly be eating the adults returning from the bottom
where they have dived and deposited their eggs. When the Speckled Peter egg layers are depositing their
eggs on the bottom, they do return to the surface. They cannot immediately fly away. It takes a few
seconds for them to get their wings dry before they depart the surface.
Availability to trout:
Type of water:
Duration of hatch period:
helicopsyche borealis species
Shelter Case Makers
Moderate to slow - smooth and broken surface
Late Afternoons, mostly evenings