.......................  ....................  ...Fly Fishing Yellowstone National Park
New KISS Bug Series - Part 58

Little Sister Caddisfly

The Little Sister larvae are net-spinning larvae. That means the larvae build tiny nets on rocks that catch
their food in the current. The little nets look similar to a parachute but are not as big as the end of your little

Sometimes the larvae are in a shelter they have built near the end of the net and sometimes they are
strung out from their net a few inches on a silk line. They are very much available for the trout to eat. The
shelters are open ended sheds, not cases that really protect them.

Present the larva imitation in the riffles with some weight attached a few inches above the fly.  An slightly up
and across presentation works best in most pocket water streams. Allow the fly to swing all the way around
and downstream near the bottom. It should come around in the current to the down and across position.
Keep it on the bottom or very near the bottom at all times.

In smooth water, where it's difficult to get close to the trout without spooking them, you can use a down and
across presentation. You may need to add more weight. We usually add small spit shot about six inches
above the fly. It's more difficult to detect a strike this way but it lets you get the fly to the trout before they
are able to see the leader or fly line. Strikes are detected in two ways - by feeling the fish take the fly or by
seeing your line stop abruptly, flicker or move unnaturally in the current.

You can use a strike indicator if you must. Keep it small and try to set it depth wise to where the fly stays on
or near the bottom. In the fast riffles, the indicator may need to be positioned on the leader three times the
water depth you are fishing. It's best if you mend your line and keep the fly ahead or downstream of the
indicator. The indicator usually just stops instead of shooting under the water but if you question its
movement, set the hook.
Copyright 2012 James Marsh
Little Sister Caddis
Availability to trout:             
Hook Size:                          
Type of water:                    
Emergence time:                
Duration of hatch period:

Hydropsychidae cheumatopsyche
Throughout the park in most all streams
Moderate to slow
Late afternoons
2 weeks to a month